Kevin A. Freitas

 E: freitaka@blarg.net
P: 253.229.5093
W: kevinfreitas.net/pro

Firefox Extensions

MeasureIt screenshot

MeasureIt 0.3.8 MeasureIt

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

Download MeasureIt 0.3.8 (17.9K) »

Instructions for Use

  1. click the MeasureIt button MeasureIt icon in the status bar or toolbar to turn it on/off
  2. click and drag out a ruler box
  3. click and hold to move the ruler box
  4. CTRL + Arrow Keys to nudge ruler by 1 pixel
  5. CTRL + SHIFT + Arrow Keys to nudge ruler by 5 pixels
  6. click the "X" to close that ruler or click outside of it to begin drawing another ruler
  7. ESC key to turn off MeasureIt

Future Features

  • horizontal and vertical center guidelines
  • resizable ruler box
  • different units
  • multiple measurements at once
  • pin measurement boxes to page
  • optional settings (e.g. button location, visibility,background lightening, etc.)
  • option to create box from pointer out in all directions
  • snap to page objects edges
  • scalable ruler units
  • activate in right-click context menu and keyboard shortcut
  • show object (e.g. div, table, img) width on mouseover
  • show grid over page behind MeasureIt ruler box
  • drag-and-drop rather than two click to draw ruler box
  • moveable measurement box
  • fine tune/nudge box with keyboard arrows
  • ESC key turns off MeasureIt

Known Issues (in order of importance)

  1. Jittery artifacts when moving ruler box (Fx 1.5)
  2. MeasureIt does not override general div styles that may be set on webpages (e.g. http://shootout.alioth.debian.org)
  3. when page refreshes, ruler closes yet value still set to "on"
  4. no scrolling individual frames in frameset
  5. flash objects disappear when MeasureIt is activated
  6. proper MeasureIt status shown when toolbar button not being used
  7. prevent nudged or dragged ruler from leaving upper left page bounds
  8. second (y-component) click not calculated correctly scrolled page
  9. toolbar dissappears when second click is too close to right edge of page
  10. add marker showing position of first click
  11. 1px width or height doesn't refresh ruler box or show 1px line
  12. brief flash when large ruler area is changed
  13. ruler button doesn't light up (#fff) when MeasureIt is on
  14. ruler toolbar "X" close button doesn't show depressed state
  15. no ruler ticks showing (ver. 0.2)
  16. ruler doesn't activate on framed site
  17. measureit doesn't work when viewing an image only
  18. multiple measureit boxes and headers can occur
  19. better draggable box accuracy
  20. fixed CSS error with semicolon before "!important" directive (thanks Alfonso!)
  21. tested and updated to work w/Firefox 2

Updated 6/12/2008

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Comments (384) | To Top

12/22/2004 @ 11:21am

Nice one! I like it.

Few suggestions for future:
1. button position can be changed (e.g. put in the toolbar ... etc.)
2. ruler can be moved.
3. it will be great if you can make a feature like the snap to object (as in photoshop).

Thank you,

by Yazan

12/22/2004 @ 11:24am

Great suggestions, thanks! I'll add them to the list. The "snap to object" one would be particularly interesting...

by KevinFreitas

12/22/2004 @ 4:29pm

Hi!
That is a very nice Extension you have made there! :) I like it very much, but I have a problem, I can't get it to work on my blog (http://forteller.blogspot.com)!
It managed to measure once one time, but when I clicked the "x" and tried again it didn't work again..
Please help! :)

by børge

12/22/2004 @ 6:52pm

very nice !
I do have one problem, if I measure too far to the right side of the screen, the readings go off the screen to the right.
win xpsp2, ff1.0.

by Dan Joel

12/23/2004 @ 8:32am

If you scroll down in a page, and try to use the ruler, it acts funny.

by Yazan

12/23/2004 @ 8:42am

Dan and Yazan: Both of the issues you mentioned are on my list of "known issues" above. I'm pretty sure I can take care of issue #2 above but #1 could be more of a challenge. Stay tuned for updates...

As for børge's problem, I tried MeasureIt out on your blog with Ff 1.0 and it worked just swell. Can you tell me your platform/version and related info so I can do some testing?

~ Kevin

by KevinFreitas

12/24/2004 @ 1:58pm

Hi!
I use WinXP SP2 with the latest stable release of Firefox (1.0) on an Acer TravelMate 660 and you can find a list of my extensions here: http://indi.trybalink.net/blog/extensionslist.html
Thanks for checking it out! :)
Hmm.. strange, I tried again today, and it worked just fine.. I tried many times that day and as I said, it just worked once one of the times I tried! I don't understand this..

Merry Christmas, anyway! :)

by børge

12/24/2004 @ 11:18pm

In what way would this be superior to simply using an ordinary onscreen ruler program?

by Jonas

12/29/2004 @ 8:45am

børge: To make the environment for MeasureIt to work the extension actually adds some lines to the page via the DOM. Maybe I'll take a closer look at your site to make certain none of the insertted styles/code is interfering with yours.

Jonas: I wouldn't say it's superior except that I work/live/play in Firefox and wanted a tool that helped me there. I was also unaware of any on-screen ruler programs but since mine is a Firefox extension it's usable across many OS's.

by KevinFreitas

12/30/2004 @ 3:48am

Very nice extension, only thing I would really like to see is a "hide" option, or at least an option to keep it someplace else.

by Charlie

12/30/2004 @ 8:46am

Charlie: Thanks for the comment! Are you referring to the icon to launch MeasureIt? Would you rather get to it from the right-click context menu or somewhere up in the tools menu? What if it were a button you could add to the toolbar at top using the "Customize" option?

Cheers!

by KevinFreitas

1/3/2005 @ 11:54am

Best on the toolbar

by RobertJ

1/3/2005 @ 12:32pm

Haven't explored how to create and store extension options -- anyone have any tips/links you could share with me?

by KevinFreitas

2/5/2005 @ 2:59am

Hello Kevin!

I wanted the extension "MeasureIt" for the Browser
"Firefox 1,0" downloaden.
The Browser announces that a down load is not possible.
Can you help?

Yours sincerely

Stephan

by Stephan

2/5/2005 @ 4:38pm

I wonder if this is how it is supposed to be, or if it's behaving odly...
Everything seems to function just fine, only thing is the actual "point" (i.e. the corner mark) appears at the very bottom tip of the crosshair cursor (when you click to select the corner points). I am used to having the *center* of the crosshair be "the official point", not right below. Is this where it is "supposed" to be?

Kitty

by Kitty

2/6/2005 @ 9:36am

Kitty: Right now MeasureIt has a major bug where any scrolling down a page throws its measurements way off. This is the first item on my list of known issues above and may explain what you're seeing. Try turning on MeasureIt on a page before you scroll and you'll see how it /should/ behave.

Cheers! ~ Kevin

by KevinFreitas

2/6/2005 @ 1:45pm

Well, I tried that and the same thing happens. It doesn't seem the measurements are off any. It is just that when you click to "drop" a corner, and then another one, the point that appears does not appear in the center of the crosshairs (and no, I didn't move the crosshairs while clicking), instead it appears at the tip of the bottom of the up-and-down crosshair axis

Thanks, Kitty.

by Kitty

2/8/2005 @ 10:50pm

Can you send me your vitals (e.g. browser version, OS, resolution, etc.) so I can attempt to figure this one out?

Thanks! ~ Kevin

by KevinFreitas

2/11/2005 @ 9:08am

Thanks for developing this one. It is extremely useful.

by Chris

3/1/2005 @ 6:13am

A fantastic extension. I used Meazure from www.cthing.com. An advanced free measure tool, but a measure tool in your browser is a bit more user friendly, because that's where I measure.

I'm surprised your tool isn't yet available at Mozilla Update :: Extension (https://addons.update.mozilla.org/extensions/)

by Anand

3/1/2005 @ 6:28am

Thanks Anand. I've got some updates and bugs to fix but I really appreciate the kind words.

I actually just found my submission for the Mozilla Update :: Extension site and it hasn't been touched since Jan. 7. Don't suppose anyone out there knows how to speed up these listings?

by KevinFreitas

3/6/2005 @ 2:34am

It would be nice for the download on this page to indicate the current version, since the filename/link gives no clue. (I like to periodically update my extensions by hand). Enough of the site, as far as the extension itself, thank you... this should prove useful for web authoring...

by Kyle

3/6/2005 @ 12:16pm

Good idea, Kyle. I also tagged the page with a "Last Updated" date. I hope to make some strides with MeasureIt in the next month or so to rid it of some of the known issues listed above. Got another web development extension in the works that may also prove useful. Stay tuned...

by KevinFreitas

3/6/2005 @ 12:47pm

Thanks to everyone out there who have given the Firefox ruler extension MeasureIt a chance! Since I released 0.1 in December it's been downloaded over 1,500 times!

I hope to begin plowing through the know issues listed above and could certainly use any feedback you may have to make this an even better extension.

~ Kevin

by KevinFreitas

3/22/2005 @ 3:04pm

I found that you cannot install MeasureIt 0.2 without first removing 0.1. If you don't it really screws up all the extensions.

by Robert Janc

3/22/2005 @ 8:13pm

Thanks for the info, Robert. Did you do an auto-update or install it manually? I'll be sure to post a note on this site here (and on the extensionsmirror.nl site). ~ Kevin

by KevinFreitas

3/23/2005 @ 7:26am

I did an auto-update.

by Robert Janc

3/23/2005 @ 9:18pm

When I uninstall it - it does not uninstall - it still runs at firefox startup but the extension is greyed out in the extension list - please fix the uninstaller and please tell me how to remove manually!

by Sir Not-Appearing-In-This-Flim

3/25/2005 @ 3:39pm

An update in mozilla popped up today for MeasureIt. So I updated without uninstalling MeasureIt 0.1, because I didn't know about this page yet. The update has hosed Mozilla. It just hangs when I start it. I then uninstalled Mozilla, reinstalled mozilla. Fresh install still shows the greyed MeasureIt Icon in the bottom. Mozilla hangs after start, I can't enter a URL or use any drop down menus. For some reason, after an uninstall of Mozilla, and a reinstall, Mozilla thinks MeasureIt is still there.

The version of Mozilla I use is Firefox 1.0.1

This is my work computer, and I'm desperately tryign to save it. This is super annoying.

I think I need the old version of MeasureIt, 0.1, so I can install it by dragging it into Mozilla and then choosing to uninstall it.

Any ideas? This is VERY annoying.

by Christian

3/25/2005 @ 5:34pm

Christian: For the near-term you can wipe MeasureIt from your machine by following these instructions:
- close Firefox
- Open c:\Documents and Settings\USERNAME\Application Data\
Mozilla\Firefox\Profiles\GIBBERISH\extensions
- remove the {75CEEE46-9B64-46f8-94BF-54012DE155F0} folder
- re-open Firefox -- you should be fine now, from there you can go into the Extensions window and disable MeasureIt

In the meantime, I don't recommend going back to 0.1 since I'm not really sure where the problem lies in the first place. I need to figure out why this is happening. Sorry for the trouble but hopefully I can stabilize this. Stay tuned...

by KevinFreitas

4/6/2005 @ 6:12am

This is a very useful extension. Congratulations!

The only problem I've found is I can't enable the rule on pages with framesets. Is this a known issue?

by 6q

4/6/2005 @ 6:38am

Actually, 6q, it is and I'll add it to the list of known issues. Thanks for the prompting and enjoy! ~ Kevin

by KevinFreitas

4/11/2005 @ 12:06pm

Great job, Kevin, thnx a lot!
A suggestion: It would be cool to be able to deactivate ruler by right-clicking anywhere on the page (in addition to clicking on its icon) - just like with the ColorZilla extension for example
:o)

by richard

4/17/2005 @ 5:55pm

Hi
Is it possible to add a scale changer with the different units proposed in 'Future Features'. I'd love to be able to scale drawing measurements off the screen.
An area calulator ?

by Jim

4/17/2005 @ 10:13pm

richard: I believe I can manage a right-click activation. Something that has a check by it if it's on kinda' thing?

Jim: I dropped that on the list. Thanks for the suggestion!

~ Kevin

by KevinFreitas

4/20/2005 @ 8:31pm

Awesome extension! Coupled with Webdev tools, DOM Inspector and the javascript console, firefox is quite the developer tool.

Keep up the great work!

by Nathan DeGruchy

4/22/2005 @ 8:43pm

Kevin: I meant this: I left-click the MeasureIt icon - it's activated. Now, to deactivate it, I could either left-click the icon again (as now) or right-click anywhere on page.
No context menu item is neccessary.

by richard

4/25/2005 @ 12:04am

Very, very well done.

by Thomas Chronz

4/26/2005 @ 4:40pm

So good this extension of yours. Yet nothing to complain, but I have a suggestion:

As soon as I saw it, I thought: measure selection, but it is not possible. It would be great if the extension could measure any thing selected, be it text, image, form field. Don't know if it is possible, it's just an idea.

by O Rapouso

4/26/2005 @ 7:26pm

Awesome stuff!
Here's my wishlist... If you click to the left, or above the first point, then the first point is repositioned, otherwise the second point is repositioned.

Also, ability to fine-tune the measurement selection by 1px at a time - either by the cursor keys, or some buttons (perhaps super-imposed over the blue selection)

But, its already so useful, so thanks again!

by Mr Speaker

4/26/2005 @ 8:23pm

I added in the ability to move the first point by clicking to the left, or above the first point. In the measureOverlay.js, after the "else if(firstClick==1){" in the place of:
x2 = tempX;
y2 = tempY;
I used:
if (tempX < x1 || tempY < y1 )
{
x1 = tempX;
y1 = tempY;
}
else
{
x2 = tempX;
y2 = tempY;
}
Might be useful to others who want this.

by Mr Speaker

4/27/2005 @ 3:50am

It´s really useful for webdesigning and
saved me a lot of time already :-)

Where´s the next version ? ^^

by Patrick Metz

5/4/2005 @ 1:09pm

A little zoom box that shows the precise location of the cursor would be a nice feature.

by CooLynX

5/5/2005 @ 8:48am

How about a keyboard shortcut?

by Gordon Barber

5/9/2005 @ 2:44pm

Great idea!!!
One more wish:
-Copy to clipboard ("235 x 488" format, for example).
Another idea on the fly, a litle toolbox beside de X close button could be nice.
Many thanks for your effords.

by Paulo

5/13/2005 @ 11:28pm

Very good useful extension. Thanks Kevin.

But I am not able to measure Flash objects. They disappear if I activate the ruler. It will be great if you solve this issue.

by Muthu

5/15/2005 @ 9:47pm

Thanks for the info, Muthu. It's on my bug list and I hope to have it solved soon. Cheers! ~ Kevin

by KevinFreitas

5/16/2005 @ 6:06pm

Hey there, great extension and very useful. I'd like to see a "resize" function added; you know, like the little squares that show up on the sides and corners of objects in PhotoShop and other graphics programs. That would enable more accurate measuring.

by Matthew

5/18/2005 @ 1:27pm

Appreciate today's update. Since I installed the extension I've constantly been trying to drag and drop to measure something. Appreciate the good work!

by Brian

5/18/2005 @ 1:36pm

Not sure if it's possible, but having the color of the cursor be inverted of the hovered element would be nice because it's difficult to see it on some pages.

by Tristan

5/18/2005 @ 3:42pm

Tirstan: That's the reason I have that semi-transparent, velum cover the page to try and equalize things so the cursor is more visible. Also, I'm not sure if the cursor can be inverted -- at least not with CSS which is how I change it the crosshairs now.

by KevinFreitas

5/19/2005 @ 8:31am

It would be nice if this extension also told you the width and height of elements on the page. I imagine while you are mousing over the page, what ever is underneith, the height and width is presented. For example, images, tables, table cells...

by marc

5/19/2005 @ 10:10am

marc: I was just thinking about doing something like that. I've added it to the features list above. Cheers! ~ Kevin

by KevinFreitas

5/19/2005 @ 1:49pm

Hey Kevin, here is another.

All I want to do when I am done with measureit is to hit esc. Can you program that in?

by marc

5/19/2005 @ 1:53pm

Ah, I see the esc key is done now that I have seen the features list. Great work.

by marc

5/20/2005 @ 3:33am

Rulers are misplaced in this site : http://shootout.alioth.debian.org/ . I'm using Windows 2k, and FireFox 1.0.4, with MeasureIt 0.2.8. I haven't yet tried under Linux. Hope this will help this great tool :)

by Damien Szczyt

5/20/2005 @ 6:31am

Damien: Thanks for the link. I can see the problem here, too. The only thing I can see that may be the issue is that this site is XHTML 1.0 strict and my CSS for MeasureIt may not be up to "strict" snuff. Up it goes on the bug list. Thanks again! ~ Kevin

by KevinFreitas

5/25/2005 @ 5:39am

Is there any way to make MeasureIt work with the NoScript extension enabled?

It would be nice if MeasureIt displayed the x and y coordinates of the cursor position. (Distance in pixels from top left.)

The x and y coordinates above an image would help with image map.

by marc

5/25/2005 @ 6:54am

marc: I'm working on getting MeasureIt further out of the webpage space so NoScript won't interfere (which I'm not really pleased with anyway). I could certainly add in screen cursor coordinates I just need to find a clean way to display them. As for image coordinates, that'll probably have to wait until I begin working on features like displaying of widths and info for elements on the page. Right now MeasureIt sits completely on top of any page and doesn't interact with it in any meaningful way.

Thanks for the feedback/question! ~ Kevin

by KevinFreitas

5/27/2005 @ 5:48am

Tried it with FF 1.0.4 on winXP - no" xhtml strict" problem on www.drupal.org which is also xhtml strict...

by jpoesen

5/27/2005 @ 5:53am

About the xhtml strict bug : notice that the problem does not occur on that debian site when you disable all css. I'm guessing the voice-family hack is interfering here...

by jpoesen

5/27/2005 @ 6:25am

jpoesen: thanks for the reassurance -- I hadn't had a chance to test this out. I looked around the CSS on that debian site and found that they have a very generic style on all div tags that pushes the margin and padding in. Gotta love that. I'm currently trying to get MeaseureIt out of the page and more on top of it so these sorts of conflicts don't arise. Cheers! ~ Kevin

by KevinFreitas

5/27/2005 @ 8:08am

thanks, a great extension

by thomas

5/27/2005 @ 8:37am

jpoesen: got it fixed up in upcoming version 0.3 Thanks for the heads up! ~ Kevin

by KevinFreitas

5/29/2005 @ 11:42pm

Thanks Kevin. Great work!

by jpoesen

6/9/2005 @ 10:37am

thanks, danke, merci

by elsch

7/7/2005 @ 7:23am

Incredibly useful. I wish I would have found this sooner.

by Luke

7/14/2005 @ 10:43am

I'd just like to thank you for making this extension, it's definitely one of the most useful I've seen, right up there with the web developer toolbar -- indispensible! Thanks!

by Erik Kallevig

7/22/2005 @ 9:19am

Ein tolles Tool, ich möchte es nicht mehr missen - danke!

by Elmow

7/27/2005 @ 4:31am

Thanx for this tool! Don't know how I've made the past years without it :)

by theFunk

8/1/2005 @ 4:46pm

Would love thise plugin for the Mozilla Suite. Nice tool, from what I've seen co-workers using it for.

by Skippy

8/6/2005 @ 5:17am

Kevin

Just dloaded MeasureIt for Firefox and while it shows up in the installed extensions list, I can't see it on my toolbar or elsewhere. Am I missing something? Is it possible it doesn't work on Mac?

by Jay

8/6/2005 @ 9:04am

Jay: You should see a small ruler icon in your status bar that you can click on to activate MeasureIt. I'm releasing a new version today that also allows for a button to be placed anywhere in your toolbars. I've tested MeasureIt on an OS X Mac and it worked just fine.

by KevinFreitas

8/6/2005 @ 10:49am

Great extension, very useful for web development!

Agree with many of the wishlist items above, hope you keep developing it.

Thanks for providing such a useful tool to the FF community...

by StrangeAttractor

8/8/2005 @ 1:31am

I love Measureit, I have used it a lot working on websites, I even wrote how great it is on my blog. I'm excited to install the newest version now that I've gotten around to checking for updates!

by Erich

8/10/2005 @ 7:43am

An excellent extension, a must for web development. Keep up the amazing work.

by D

8/12/2005 @ 4:02am

It will be very usefull to add right-click deacivation.
Like it is in ColorZilla.

by Serge Matveenko

8/12/2005 @ 4:11pm

Love the new version, maybe you can have a feature down the road that will snap to maybe 5 pixels.

by Erich

8/15/2005 @ 8:24am

great extension. I'll be using this a lot. Looking forward to "snapping" functionality.
thanks for taking the time.

by Barry

8/15/2005 @ 12:03pm

Very helpful extension. Being a web developer, I put this tool at the top of my list of must-have website design tools! It does all that I hope for, and each update brings even more new features I never knew I needed!

by Hank

8/21/2005 @ 7:48am

Love this little extension! Would be even greater if left and top positions are also displayed.

by Kees de Kooter

8/22/2005 @ 6:29am

Cool tool. Even better if you could resize a ruler box.

by Rick

8/25/2005 @ 1:26am

Hi.
A request. save position and size of the ruler.
so when you click a new link you can compare widths and heights.
thx :)

by Georg NAgel

9/12/2005 @ 2:31am

Would it be possible to configure MeasureIt not to use a 'grey' transparant overlay? This slows down the extension enormously on my Linux machine. If this could be changed via preferences that would help a lot :)

by Spider007.net

9/12/2005 @ 6:16am

Spider: I've noticed that same slow down on a my Ubuntu box as well. I'll put it on my list for preference options. Thanks for the suggestion. Cheers! ~ Kevin

by KevinFreitas

9/12/2005 @ 10:40am

any idea when you'll be supported in firefox 1.5 beta?

by jonese

9/12/2005 @ 10:55am

jonese: I should have a chance to test and update this and my other extensions this week in 1.5b1. Thanks for the interest and take care! ~ Kevin

by KevinFreitas

9/15/2005 @ 12:11pm

I, too would like to see this supported with ver. 1.5. I think the Webdeveloper extension has been retooled to work with it, this extension is another "must have".

by Erich

9/19/2005 @ 1:24am

thank you ;)) MeasureIt - super comfortable plugin

by Jimmmy

9/22/2005 @ 9:08am

You would do well to check out Microsoft's New Web Developer Extension. I was looking around for something similar to their "Ruler" when I found your extension - the usefulness can not be denied, so get a tip cup out there for us to motivate you!

by neonpill

9/22/2005 @ 9:16am

Oh, sorry, the link: http://www.microsoft.com/downloads/details.aspx?FamilyID=E59C3964-672D-4511-BB3E-2D5E1DB91038&displaylang=en
or if it moves, just search Google with DevToolbar.

It's the first Internet Explorer extension I have actually kept installed - and should be an inspiration to us all.

by neonpill

9/22/2005 @ 9:30am

IE DevTool extension:

http://www.microsoft.com/downloads/details.aspx?FamilyID=E59C3964-672D-4511-BB3E-2D5E1DB91038&displaylang=en

by neonpill

9/22/2005 @ 9:41am

Sorry, it seems I can't post the link to the download directly - just search Google for
"Internet Explorer Developer Toolbar Beta" and try it out. (sorry, I know - going into IE can be painful)

by Sir Not-Appearing-In-This-Flim

9/22/2005 @ 7:31pm

hey dude di u have an update for firefox1.0.7

by siddharth

9/25/2005 @ 11:13am

Excellent! Thank you.

In addition to nudging, it would be nice to have a way to change the size of the ruler in small increments. I'm pretty good at getting the crosshairs in the right spot to start, but sometimes I release the mouse button before the lower right corner is correctly positioned.

by Will Fastie

10/4/2005 @ 3:48pm

All i can say is this is the best extension so far.

kudos to you

by redman68

10/10/2005 @ 8:25am

I could not install this program.
I am an experienced PC and web user but I had no sucess installing this extension.

Clicking on the download link in Firefox 1.06 did nothing.
I saved it onto my WinXP system by right-clicking and "Save Link As."
I tried to execute the measureit.xpi saved file but Windows did not know how to handle it.
Neither do I.

by Todd

10/12/2005 @ 7:49am

I was able to install the MeasureIt extension after allowing this site to install software.

by Todd

10/13/2005 @ 6:16pm

This tool would be amazing if you could have the feature to "zoom" in on the page and having it snap to pixels. other than that id rather just take a snap shot of somthing and drag it into photoshop.

by vincent ramos

10/16/2005 @ 4:04am

There's a little error in the JS console due to MeasureIt 0.3.2, just change this line from
#measureit_box.dragging { background: transparent none !important; border: 1px dotted #000; !important; }

to
#measureit_box.dragging { background: transparent none !important; border: 1px dotted #000 !important; }

by Alfonso

10/16/2005 @ 8:45pm

Alfonso: Thanks for the note. Just fixed that and changed how dragging works in the Javascript so it should work better now. Often as one tried to drag a ruler box too fast the cursor would leave the box and it would stop moving. Not anymore.

Cheers! ~ Kevin

by KevinFreitas

10/18/2005 @ 10:49am

Gotta make it work with beta 2 now. Sorry!

by Sir Not-Appearing-In-This-Flim

10/20/2005 @ 4:41pm

This is an awesome extension. Just a heads up that it doesn't work in Flock (flock.com), which will hopefully become one of the popular browsers (I like it, why shouldn't everyone else?).

Thanks for the hard work and great results.

by Marshall

10/23/2005 @ 8:22am

Hi,

This is a superb extension that's been beautifully made well done, I was thinking though a screen grab facility would be nice if there were some way of grabbing the insides of the box and storing it to the clipboard etc.

Anyways, keep up the good work.

Tim

by Tim

10/25/2005 @ 9:22am

Having trouble installing right now- I've set website as trusted source but download manager is popping up with error...

by Damian Watson

10/29/2005 @ 7:57am

I think there should be an option to extend the box 1 or 5px like there is to make it 1 or 5px =)

Also, I /definitely/ think there should be, as well as the width and height, a distance from the top of the page and left of page. Well... actually, if anyone can think of why this would be useful, that is.....

by Sam

10/31/2005 @ 6:41am

Great works man. Thank you very much.

by Textpattern v ÄeÅ¡tinÄ›

11/1/2005 @ 6:34am

I think this looks really professional, right down to the icon at the bottom left, well done. I'm not sure if tablet PC's will make this quicrky feature superflous but would like to request two features:

1. That there be the option (once the ruller is activated at the bottom right) to click once to start and then click when finished; this will releave stress on the finger, as the user will not have to keep their finger perminently pressed down.

2. To add a COPY button to the measure bar, much like the 'x' (close) button, this would take a snapshop of the selected area. I know this is for measurement only but it would be nice to evolve it in this way, as an option.

Samuel, UK

by Samuel

11/3/2005 @ 2:19pm

This is a great extension! I have a small program that does the same thing, but I have to go fetch it. MeasureIt is so much more convenient. Thanks for your work on it.

by RJT

11/4/2005 @ 8:16am

Thanks for this extension, pretty useful. But it doesn't work with Firefox 1.5. are you planning an update? Thanks in advance

by Dajewk

11/4/2005 @ 2:06pm

Any way this great extension might be made compatible with firefox 1.5 rc1?

by Mark Richards

11/4/2005 @ 3:35pm

Have you considered accepting donations? Many of us use your product enough to be bothered by FF updates that break it, and probably wouldn't mind rewarding you monetarily for your efforts.

(In case anyone is wondering: this is not a thinly veiled attempt to bribe Kevin into working on a 1.5 update).

by Marshall

11/4/2005 @ 6:55pm

I see... I'll see if I can hammer out an update this weekend. Just FYI to my users out there, I'm working to finish up a couple freelance projects and don't plan to take anymore on so I can focus on fun development like my extensions and other for-fun websites.

I have a seriously long list of extension ideas and need start whittling away at it. Thanks for the nudge everyone and I suppose I could take donations. I'll see about setting up a PayPal link.

Cheers! ~ Kevin

by KevinFreitas

11/9/2005 @ 8:29am

any chance an option could be added to choose the location of the statusbar icon (left side, or right side)?

by jae

11/9/2005 @ 9:23am

jae: Options interfaces will get much easier with Fx 1.5 and I'd be happy to add the statusbar location as an option (left, right, or none). There is a toolbar button available to drag into your bar(s) at the top of Firefox if you'd like.

Thanks for the suggestion and watch this space.

Cheers! ~ Kevin

by KevinFreitas

11/17/2005 @ 11:40am

No offense intended, but why did you bother with this ruler design when jrule has been around for years and works really really well, better than your new ruler.

by Violet Weed

11/17/2005 @ 1:20pm

No offense taken. I was use to having to screenshot and measure things in Photoshop. I also don't enjoy having too many tools clutter my Windows taskbar. Only other reason was because Firefox is my primary web development medium and I wanted to make an extension. I'm not a real programmer but figured I could manage something with my knowledge of JS and CSS.

So, no real reason other than to create a tool in the environment people do web work in. I'll have to check out JRule sometime. Thanks for your question!

~ Kevin

by KevinFreitas

11/22/2005 @ 8:36am

1. When using theme ... like charamel for example, bar with w:,h: and closebox is still using Firefox(default) theme.
2. bar with w:,h:,closebox shuld have shadow ? like other contextmenus ?
3. in the left bottom corner, icon of the measure It dont have margin... and its start with start of the screen

by PaK

11/22/2005 @ 9:17am

PaK: Thanks for your feedback. The width/height bar is actually an HTML element not a context menu so it doesn't conform to themes but its own styling. I'll look into allowing the close button to use the current theme if that'll help.

I'll have a look at the statusbar button in some different themes. I don't use any special themes so I haven't tried it out. I will be adding an option to hide the statusbar button with the release of Fx 1.5.

Cheers! ~ Kevin

by KevinFreitas

11/22/2005 @ 1:08pm

And hotkey could be good improvment on it :)
But everything is going in very very good direction :) cool extension :) greate work :)

by PaK

11/22/2005 @ 2:24pm

And it would be good if you could add the date of last release

by PaK

11/22/2005 @ 2:29pm

PaK: Thanks for the encouragement. Do you want a release date in the extension itself? If not, there's a "updated" date on this page just above the comments. I'll also aim to add a keyboard shortcut.

Cheers! ~ Kevin

by KevinFreitas

11/24/2005 @ 9:29pm

I really like this extension, but could you get it to work with IETab? That would be awesome
Thanks

by Daniel Moore

11/30/2005 @ 4:50pm

You say you have many other extension ideas to develop, how about listing them.

And how come when I click the extensions tab in FF to search for new updated versions your came back with nothing, but your site has a new version on it. Can you include it so FF can tell when a new version is available thanks.

by Samuel

12/1/2005 @ 12:52pm

I don't think I'd be able to develop sites like I do without this tool. As Daniel Moore states, would be nice if it worked with IE Tab, (unfortunately I have to develop sites that work on both platfroms, I wish EVERYONE used FireFox) :)

by Brian

12/3/2005 @ 3:02am

Man, I use this extension a lot. I just downloaded Fx 1.5 and I was saddened to see it wasn't recognized as being compatible with the new Fx. But now that I see you have updated MeasureIt, I can once again enjoy one of the best extensions available!

by Sam

12/5/2005 @ 5:46pm

Nice work, you made the list. ;-)

by Douglas Clifton

12/6/2005 @ 6:08pm

As many others, I hope you update this extension so it works with FF 1.5
Its a fantastic and very useful tool.

by G Casanova

12/8/2005 @ 4:50pm

pleae update this extension. it's been worth it's weight in platnum to me.

by groonk

12/8/2005 @ 9:48pm

groonk: Thanks for the compliment. I'm awaiting approval of MeasureIt on AMO currently but you can always get an advanced version on this site. The version above is ready to go for Fx 1.5.

Cheers! ~ Kevin

by KevinFreitas

12/15/2005 @ 8:49pm

so when is a new release going to be added, hopefully with the multiple measurements suggestion pushed to the top? one before christmas?

by Samuel

12/19/2005 @ 1:00am

Any chance you will be providing functionality to make possible a way to drag box to new tab? thanks

by Thuan Ngoc

12/20/2005 @ 6:35am

Hope they havent been mentioned before, these features would be very nice expecially for usability analysts:
- show surface in pixels
- show surface in percentage of entire screen

This way you can make an analysis of the real estate on a webpage.

by Ruben Timmerman

12/20/2005 @ 6:40am

Ruben: Very original and tremendously useful thoughts. I'll add them to my list above and keep them in mind while working on future versions. I particularly like these because I can already fathom how they might work.

Cheers! ~ Kevin

by KevinFreitas

12/26/2005 @ 10:50am

Really fine! Just fine. Simple and fast. Thanks a lot.

by Robert Hartl

12/29/2005 @ 4:16pm

Nice extension. It's simple, slick, clean.

A newbie at web devo, I just started paying attention to how folks assemble their page layouts. Just have 2 suggestions. 1st: Please put the 7 lines of "instructions for use" in "Quick Description" of the FireFox Extensions page. This will avoid you getting unnessary posts on the Firefox evals of "how the hell do you use this thing?"

The second is a feature request of the future: Would like to be able to resize the box once it's created.

by imtechie

1/6/2006 @ 1:02pm

Very nice extension. Only problem I have is it doesn't work on pages with framsets. The crosshair cursor appears, but I can't sweep out any measurement boxes.

by AlexL

1/6/2006 @ 1:04pm

One other minor problem is that I have NoScript installed and if I have javascript disabled for a website, then MeasureIt doesn't work. Would be nice if it was fixed, but not a big problem because for the websites I am working on, javascript would be enabled. I just noticed it because I was playing around with it on some external websites where I have javascript disabled with NoScript extension.

by AlexL

1/19/2006 @ 7:52am

actually, one of my favourite extensions so far.
compliments.

by Liquid Shadow

1/19/2006 @ 2:20pm

My client designs websites exclusively and tells me this extension is a must-have. After learning about Fx and seeing this extension at work, I must say he's right!

by Larry

1/22/2006 @ 8:17pm

Very nice little tool you've come up with here. I'm actually going to find it rather handy.

If I may offer one (very simple, I think) suggestion, maybe you add the angular distance (hypotenuse) between the two points. Maybe allow for the output to be scaled as well. This would be handy for quick measurements on internet maps.

Thanks again and keep up the good work.

by Dan

1/23/2006 @ 5:21am

I work a good amount with PDFLib in ColdFusion. This tool is great because it allows me to calculate the size in pixels of a text box that I will be populating onto a pdf. I just open the RAW pdf template in FF and turn on MeasureIt. Then create the box at the size i need and record the dimensions to put into my code. This is going to save me a lot of time spent massaging the text box size to fit properly.
I have one suggestion though. Would there be any way to add a START and diagonal END position. It would help me and few other people that I work with when we try to calculate the start position of the text boxes. Just a thought! thanks!

by digitalslacker

2/7/2006 @ 11:36pm

What a handy little gizmo

I notice a few people have asked - so I'll ask too. The origin of the rectangle would be so useful

by Kevin Vinsen

2/8/2006 @ 8:13am

I'm working on a version that allows the user to control what data shows (e.g. origin, diag distance, pixel area). I hope to have it out in the next couple weeks -- I'm working on updating all my extensions. Thanks for the feedback and suggestions! ~ Kevin

by KevinFreitas

2/17/2006 @ 7:53am

I have noscript installed like AlexL, it is only by looking for an update for the extension that I came across this info. As noscript is a very popular extension would it not be a good idea to mention the javascript requirement on the mozilla extension page? Thanks for the great extension, very useful for image maps etc.

by Mick

2/17/2006 @ 8:27am

Thanks Mick. I need to try out that extension to figure how I can make it work regardless of it being enabled or not. This extension inserts JS into the document and I would presume that's what hanging it up. I'm always learning...

~ Kevin

by KevinFreitas

2/18/2006 @ 1:48pm

If I were to get an additional monitor for my computer, can I drag the box across to the new screen after I make a selection box? Thanks for this tool please.

by Sven

2/19/2006 @ 8:55am

Sven: If your Firefox window extends onto the next monitor MeasureIt's selection box should have no problem going over there. MeasureIt only lives inside Firefox however and cannot be used to measure things outside of it.

~ Kevin

by KevinFreitas

2/19/2006 @ 4:45pm

There is a bug that it is not compliable with NoScript as NoScript blocks website javascript.

by Itsnotvalid

2/19/2006 @ 5:48pm

Great idea!
Thank you.

by martien

2/24/2006 @ 10:06pm

I cannot wait until there is a hotkey to toggle it on / off!

by Adam

3/5/2006 @ 12:31pm

Screenshots!!! That's all I have to say :-) Well, that and, "I love this extension!" The ability to take screenshots would make this my most used extension.

by Michael Flanakin

3/6/2006 @ 1:49pm

Kevin, I just simply love measure-it!

Now I have a request for an extention which would let me draw multiple vertical, horizontal and angled lines on top of a web page. maybe it would even have the ability to "grow" a transparent screen (like measure-it) from avertically placed line in a given direction (I need left to right) driven by actual time... So the screen would grow with time passing and allow me to track the development of a given event (like an entry into the market)
I am a day trader and would use it to track my entry and exit points... would you be interested in undertaking this?

I cannot program anything, so I need your help.

thanks for the fantastic measure it!

by dimitri

3/6/2006 @ 1:52pm

Oh, and before I forget: If you are not interested in undertaking this project, could you maybe pass this on to someone who would? and could you please let me know in ANY case?

many thanks,

by Dimitri

3/14/2006 @ 8:58am

Good Job!
With Web Developer, MeasureIt and Colorzilla, we don't need Dreamweaver anymore!

by Andres

3/16/2006 @ 1:40pm

So how's that surface measurement coming along! ;) I don't see it on the features list, while it is so simple, just calc the width and height :)

For the rest: hurrah for Kevin! (sorry, used the tool today for another usability audit to quickly show the website's real estate in pixels, so thought of checking back here)

by Usability!

3/17/2006 @ 1:00pm

This tool is awesome! My company is so much more productive now that we found Measureit.

by Jim

3/20/2006 @ 1:08pm

I agree that the "snap to object" function would be great. Very usable toll all in all.

by Jesus Presley

3/30/2006 @ 12:34pm

I'd be interested in some way to use MeasureIt more effectively with Google (or other) Maps. The main issue would be to pick up the scale from the lower left corner and have distances displayed in the appropriate units. In fact, having the program observe that it's been asked to measure such map and adapt the present scale would be great; I don't know if it's feasible.

by Peter Capek

3/30/2006 @ 8:08pm

Bug Notice:
MeasureIt does not work on SVG's. It won't even activate.
Sample SVG: http://www.croczilla.com/svg/samples/circles1/circles1.svg
More about SVG:
http://www.mozilla.org/projects/svg/

by Steven

4/4/2006 @ 12:11am

very nice utility. I installed it once but never had use for it. But reinstalled it today as I finally found a use for it :)

the font you use to display the size is way too small for old guys like me and it uses a big window for that!. You should also display the ofset of the box. Another feature would be to be able to input a size (and offset) in the size window.

Cheers, Nadim.

by nadim

4/7/2006 @ 2:13am

i think that dimensions shown by MeasureIt shold be decreased by 1pixel (start size is not 0px but 1px, so if you select only 1px it shows 2px width/height)

by mynth

4/12/2006 @ 5:44pm

I discovered this extension recently and find it quite useful. Another reason why Firefox is the only browser to use by the serious professional designer. One question I have is will it be possible in upcoming releases to be able to change the color of the background of the box? Sometimes the blue is hard to see.

Thanks,
George Silver

by George Silver

4/26/2006 @ 2:21pm

I really love this tool, it helps design immensely! I like the measurements in pixels and I'm wondering if it would be a benefit to be able to select other standards, such as "cm", no? Thanks again, keep up the good work! :)

by James

4/27/2006 @ 3:32am

Hi again.Having this extension enabled while javascript strict warnings on shows a warning (and four more while using it) of assignment to undeclared variables. It just as easy as set a "var " before of each one of those in order to fix them.

by Alfonso

5/2/2006 @ 12:40pm

You know what would be kewl is:

If I could move the "MeasureIt" label from under the icon to the right side of it using something like userChrome or userContent.css (whichever is used for changing themes and extensions and stuff.)

I'd like to put it on the WebDev toolbar "where it belongs" but it doesn't look right with its label underneath it.

by Mike

5/4/2006 @ 8:15am

Very useful extension. thnx. but, FF 1.5 released and no "hide" option yet :(

by Reza

5/4/2006 @ 8:51am

Thanks

by GaryJ

5/6/2006 @ 3:36pm

I find this extension very useful. The one annoyance is that it creates an icon in the status bar. It clearly does not belong there, and even if someone has an rational argument for putting it there, it should be optional.

by John

5/6/2006 @ 6:55pm

John: Thanks for the comment. You'll be pleased to know itt will be an optional icon in the next version of MeasureIt. Check back here from time to time to get the latest and greatest.

by KevinFreitas

5/8/2006 @ 11:49am

Great Tool! It's perfect for Web Design!!

Bravo!

Thanks,
Mindriot

by Mindriot

5/14/2006 @ 5:04pm

A keyboard shortcut to activate it would be great. In this world, everybody want to go fast.
eg: while dragging the mouse in position to the starting point of the measurement, I type a shortcut key and by the time the mouse is in position, I can click and drag.

by Long.

5/19/2006 @ 12:37am

any chance you could fix the strict warnings:
Warning: assignment to undeclared variable dragBox
Source file: chrome://measureit/content/measureitOverlay.js
Line: 303

by Henrik Gemal

5/31/2006 @ 3:35am

great extension, would be very cool to have a "copy my MeasureIt area into clipboard as image" functionality as well.
no more printscreen.

by kim

5/31/2006 @ 11:22am

This extension is a "must have" for developers, and an interesting addition to the casual Firefox user who wants the ability to compare items found on the screen. My clients fall in love with it when I show them! Thanks

by Gerald Hinken

6/10/2006 @ 7:52pm

Is there a way to fix the flash after you uninstall the extension?

by Shen

6/14/2006 @ 12:09am

Thanks for that special idea. This extension is really fascinating.

by Michael

6/14/2006 @ 12:10am

I always get a mistake after wanting to uninstall the extension. Is this a faulte of mine or a software prob?

by Chris

6/17/2006 @ 3:30pm

I´m a graphic designer and I think that "MeasureIt" is a very usefull FireFox extension, I like it.

by Milos

6/21/2006 @ 2:14pm

Kev, wired gave you props on a recent article involving Firefox extension.

http://www.webmonkey.com/06/25/index3a.html

by Toby

6/21/2006 @ 8:47pm

Thanks for the link up, Toby. Hope all is well with you. Crap. Since people are still using my extensions I should probably push out a couple updates. Ah how life runs away with all your spare time.

Cheers! ~ Kevin

by KevinFreitas

6/25/2006 @ 6:55am

Thanks for this very useful plugin! It's very handy.

by Andrew

7/3/2006 @ 12:28pm

Thank you for this great extension.

by Chris

7/4/2006 @ 9:06am

One of my favourite extensions so far.

Tom

by Tom Breyel

7/17/2006 @ 7:25pm

Hello I'm a Webdesigner, and you extension is just awesome. Very useful for me ^^
Keep up the good work

by Driss

7/17/2006 @ 8:12pm

Andrew, Chris, Tom, Driss: Thanks for the comments. I aim to please. Enjoy MeasureIt!

by KevinFreitas

8/1/2006 @ 2:27am

Great extension. BTW, this plugin seems to work OK with firefox 2.0b1. I had to edit install.rdf and change maxVersion to 2.0.*, once I did that, all was well.

by davehat

8/16/2006 @ 3:02am

Absolutely awesome this extension. I have just found it by chance, when I installed one of your other great extensions. This one is very very useful. Thanks!

by Michael Mueller

8/31/2006 @ 11:16pm

Great Tool! Thanks for this!

by Witze

9/1/2006 @ 7:50am

Feature Request:

A horizontal and vertical centerline would be awesome, similar to the light blue lines you can drag out in Photoshop.

by Brian

9/1/2006 @ 10:14am

Brian: That's a nice (and simple - I like those) idea. I'll add it to the list!

by KevinFreitas

9/9/2006 @ 5:31am

Beautiful! A real timesaver. Thank you so much Kevin

by Julian

9/20/2006 @ 1:36pm

Excellent plug-in! I found myself thinking "they need a ruler extension for Firefox.." so I punched it into Google and voila. You made my day :P

by Brad Fettes

9/21/2006 @ 10:07pm

If there were an award for best Firefox extension, this would certainly be in the running! Thanks for a great tool.

by Richard

9/27/2006 @ 4:56pm

Best plugin I've seen for quite some time. I will definately recommend this one to my friends.

by Psilokan

9/29/2006 @ 1:58am

nice plugin
because mouses are sometimes to insensitive, usage of keyboard should be added someday ;o)

gtx, J.

by J.

9/29/2006 @ 7:38am

Would like to second the request for scalability. Would love to use this on Internet maps, using their scale (it would be a huge assistance in my job).

by Matt Gumm

9/29/2006 @ 1:35pm

Any hope of support for Firefox 2.0 which is now in RC stage?

by Tom

10/5/2006 @ 10:38am

Anybody? Anybody? Bueller, Bueller...FireFox 2.0...anybody?

by Tom

10/5/2006 @ 11:13am

Tom: Thanks for the jab. Should be up this weekend. Stay tuned...

by KevinFreitas

10/5/2006 @ 5:10pm

Just wanted to let you know MeasureIt is fantastic. I use it several times a day. I don't know how I lived without it.

Glad to hear you are working on supporting FF2. I'll keep my eyes out for it.

by Adam K

10/9/2006 @ 7:41pm

Any news on this yet?

by Dan H

10/9/2006 @ 10:30pm

Got a new version of MeasureIt up tonight after testing things to work for Fx 2.0. Seems to be pretty smooth so enjoy!

by KevinFreitas

10/10/2006 @ 7:17am

Thanks for update MeasureIt

by Zafer BAHADIR

10/12/2006 @ 2:23pm

AWESOME, Kevin...I appreciate you fixing this for FF2. It was wonderful to see it suddenly appear in my "needs updating" add-ons list, instead of being greyed out. Very cool. This has fast become one of my most-used and most-needed extensions/add-ons/cool things to use.

by Tom

10/27/2006 @ 10:26am

Hey Kevin,
Great extension for FF! I was so glad to find it after a search for "ruler" in the add-on main page.
I've got a feature request for ya (not sure if it's been suggested yet). I'd love to be able to resize the measurement box either by grabbing the corners or from a spot in the middle of the horiz. or vert. lines.
Thanks for such a simple and extremely helpful extension!

by Eric Guess

10/27/2006 @ 10:59am

ooh, and the ability to draw multiple boxes :) and of course compatibility with IEtab would rock.
thanks again!

by Eric Guess

10/31/2006 @ 5:55am

Is the extension planned for other browsers too?

by Maik

11/1/2006 @ 1:51pm

i am sure that it is not planned for IE but maybe for opera. opera and firefox are the best browsers i know at the moment.

by Heizweb.de - Heizung Energie, Sanitär und mehr

11/1/2006 @ 7:24pm

LOVE the measure it tool. Nice Job! Best tool EVER!

by Tim Johnson

11/11/2006 @ 5:00am

Useful extension for webdesigning, it saved me a lot of time....

by Arzt

11/13/2006 @ 4:44am

Great extension for FF. Thanx!

by Marco

11/14/2006 @ 6:55pm

Love it. Very handy and well implemented.

by eyerouge

11/15/2006 @ 1:47pm

Hi, nice extension! Unfortunatelly don't work on my page :(

by Vertigo

11/16/2006 @ 2:42am

Ah, I see the esc key is done now that I have seen the features list. Great work. Greetings from Poland

by Pozycjonowanie

11/16/2006 @ 8:06am

Thank you for this extension. Especially useful for the stupid problems of IE and Firefox with div-layers.

by Johann Schuh

11/16/2006 @ 11:02am

Thank you for this great extension. Very useful!!

by René

11/16/2006 @ 11:49am

Very handy and well implemented

by g.black

11/16/2006 @ 11:51am

Thanks for this! Great Tool!

by Sebastian

11/19/2006 @ 9:18am

nice extension & good work. Any web developers who like this should try the webDeveloper extension. It has a ruler built into and much much more. addons.mozilla.org/firefox/60/

by Dan

11/19/2006 @ 9:35am

Web Developer is a great extension -- their ruler is good just somewhat buried compared to mine which does one thing and does it well. Besides -- mine's prettier. ;)

by KevinFreitas

11/20/2006 @ 8:35am

Use it all the time for my webdesign. Great easy to use tool. Thanks very much for sharing it!

by Peter Kroezen

11/21/2006 @ 8:26pm

Wow that's funny. I love Web Developer and use it quite a bit and I never knew it had a ruler. But Measure It is a much better ruler.

by Harry

11/23/2006 @ 1:30pm

This is a great tool for all webdesigners!

by Marina

11/25/2006 @ 4:19pm

I like, it's fast and sweet. Thank you.

by arChiTekCI

11/30/2006 @ 3:11pm

Have just started using Flock, as Firefox inexplicalby started crashing my Win XP system. This was one of may favorite dev. tools- Does it work with Flock? TIA

by Dida

12/4/2006 @ 8:21pm

Just dloaded MeasureIt for Firefox and while it shows up in the installed extensions list, I can't see it on my toolbar or elsewhere. Am I missing something? Is it possible it doesn't work on Mac?

by Logodesign

12/5/2006 @ 6:31am

Logo (if that IS your real name): I does work on a Mac just fine for me at work. You may have another extensions preventing the button from appearing in the lower right of your status bar. If that's the case, you can add a button to your top toolbar by right-clicking on something like your stop of home button, choosing "Customize" then looking for the ruler button. Drag that to your toolbar then you're all set.

by KevinFreitas

12/6/2006 @ 12:47am

@ Harry, i used Webdeveloper to, but not more :)
@Kevin Thanks, it works great and it's really very helpful for my work!

by Internetfirma

12/8/2006 @ 12:36pm

Listen a very easy feature.
>>> DIAGONAL LENGTH

by Italian guy

12/8/2006 @ 12:36pm

Listen a very easy feature.
DIAGONAL LENGTH
you know SQRT(L1^2+L2^2) :)
It will be very useful in Google Maps

by Italian guy

12/9/2006 @ 3:47am

Display also the diagonal length would be good :)

by I Agree

12/11/2006 @ 1:57pm

Ah, I see the esc key is done now that I have seen the features list. Great work.

by Server List

12/13/2006 @ 10:10am

I'm a professional webdesigner and online marketing free-lancer and for me the firefox extension is very useful!

by Gitarreninstitut

12/14/2006 @ 1:51pm

the tool i use every day... really cool

by mallorca

12/14/2006 @ 4:09pm

I can only confirm this, great Extension, Kevin! I'm professional webdesigner, and don't use Webdeveloper any more:) I can say, it can be very usable for problems with "divs" in IE..
Thanks, great!

by Wunschkennzeichen

12/29/2006 @ 3:04pm

what do i use to open the file once ive downloaded it?

by GCSumBLinkSP4182

1/3/2007 @ 5:00am

Its one of the "must have" ff-extensions and very useful!
@Italian guy
yes, diagonal length would be a nice feature. but in webdesigners everyday life its not so important...

by Daniel P.

1/10/2007 @ 2:17pm

Fine program, but only in inches or in metric system too?
Thank you

by Paolo Volpe

1/10/2007 @ 6:15pm

I love Web Developer and use it quite a bit and I never knew it had a ruler. But Measure It is a much better ruler.

by 程控交æ¢æœº

1/18/2007 @ 11:40am

Nice tool to control width (for example floating boxes) in differents browsers.
thxs Kevin

by Pedro

1/21/2007 @ 5:13am

i love this. i had a relative sized div which was causing me problems so i needed to put an absolute size instead. very handy tool. problem i found however is that i measured my div to be 808px but after changing my div width to 808px it was huge. 538px div showed as 808px with this tool.

by themanwhowas

1/22/2007 @ 1:24pm

Awesome stuff!
Here's my wishlist... If you click to the left, or above the first point, then the first point is repositioned, otherwise the second point is repositioned.

Also, ability to fine-tune the measurement selection by 1px at a time - either by the cursor keys, or some buttons (perhaps super-imposed over the blue selection)

But, its already so useful, so thanks again!

by johnyd

1/30/2007 @ 11:57am

Great stuff, any information about new version of this?

by opisy na gg

2/14/2007 @ 5:04am

WoW! You site is greate. Enjoyed browsing through the site. Keep up the good work. Thanks and Greetings

by Meble

2/14/2007 @ 10:46am

cool, extension. thanx,
but i, personel, does not need/want the icon in the statusbar. i'd like to place it on a toolbar especially for my web-dev-extensions.
so do you mind in adding an icon to the toolbar-window and an option to not to show the icon in the status-bar?
this would be a great plus in flexibillity
cheers mate

by ferdie

2/14/2007 @ 11:15am

ferdie: There is a toolbar icon you can drag up there but I don't currently have an option to hide the status bar one. I'll add that option to the list though.

Thanks!

by KevinFreitas

2/25/2007 @ 4:41am

Hi Kevin,

verry interesting article. I love the MeasureIt extension and would not use firefox without them. In addition I would like to recommend the colorzilla and ietab addons.

Greets from germany
Sven Fischer

by Sven Fischer

3/1/2007 @ 2:10pm

An absolutely essential extension for developing pages while I was in the Windows world. But it crashes Firefox 1.5.0.9 under Mepis Linux. :-(

by Kinney

3/5/2007 @ 1:55pm

Very nice extension!
It would be great if you could add some options.
Keep ruler area once deactivated until next activation, change edge limits by dragging, colored frame, grided area with configurable squares measure (i.e. 1x1 pixel, 2 x 2 or so)

by Luis

3/14/2007 @ 1:35pm

You're right Luis. Really: it would be great if you could add some options. I am going to check that extension on Macintosh

by Ethics

3/24/2007 @ 12:15am

Great extension, will install it first thing on my new Vista system.

by Ethel

3/24/2007 @ 8:22am

Thank you for your extension very interesting. it only works in Firefox. Keep up the good work. Greetings

by Roman J.P.

3/30/2007 @ 2:20am

I think I discovered a bug. If you "nudge" the box by using CTRL+SHIFT+appropriate arrow key, the text also gets selected, going in that area. (Atleast for me)

by Sarat

3/30/2007 @ 3:07am

So sorry for "double-commenting", just thought of saying here that I wrote a blog entry on MeasureIt.
See it on my blog, (it will probably be at the top) and please tell me whether it is an okayish effort, and any suggestions to improve it.

by Sarat

4/1/2007 @ 10:14am

hey kevin that is an absolute useful tool have u made it? i`m really impressed its great for webdesign-things. good work!

by Daniel

4/5/2007 @ 8:59am

Kevin,

Did you see that you made it in Computerworld's list of the top 20 Firefox extensions? Well deserved, too!

- Marshall

by Click to see article

4/13/2007 @ 4:47am

Great extension, works fine on PC, but my Mac is telling me it is not compatible with Firefox 2.0.0.3.

by Ekon

4/20/2007 @ 4:16am

Great stuff, any information about new version of this?

by Estetik

4/21/2007 @ 9:46am

Very Greate stuff, is there Any information about a new Version?

by Gerald Mann

4/23/2007 @ 4:50pm

One of those can't live without Firefox extensions. Thanks :-)

by Mike

4/25/2007 @ 9:09am

very nice work.
if u can show the position with it of a object with it
then it would be nice.
if it is already happening there, then please tell me how it is.
thanks for nice tool

by Amitesh

4/26/2007 @ 10:20am

A great tool! One suggestion: maybe you can show measures in both pixels and actual size (like inche/cm) so that it can be used to measure the size of a thing in the real world (sometime it's hard to find a ruler*-*).

by Ritou

5/1/2007 @ 4:09am

Hello:
great extension.
One suggestion. To me will be great a box to put the measures by hand, not drawing the rectangle.
And another, the posibility of copy the area to clipboard to paste an image, per example, to photosphop.
Thanks for your work, and my best regards.

by Pedro

5/20/2007 @ 7:17am

Great tool, I was just wondering whether you knew about the ruler contained in the Webdeveloper toolbar before you created this?

by Beth

5/20/2007 @ 9:08am

Hey Beth - Actually, I don't believe Webdeveloper had a ruler when it created this. Plus, mine is prettier and is a far simpler tool overall.

by KevinFreitas

5/23/2007 @ 12:37pm

Hi Kevin, I am looking forward to trying this tool on my PC when I get home later. For now, I have installed it on my work Mac (powerpc style) running OS X v 10.4.9 with Firefox v2.0.0.3. The extension seemed to install correctly and the ruler button turns it on, the active browser page fades back and I get the crosshair cursor. However, I can't draw a box. Nothing ever shows up. When I hit escape the extension closes as it should. Is this a quirk with the extension used on a Mac, or have I misunderstood how this works?

by Beth H.

5/23/2007 @ 1:38pm

Beth: I'm on a Mac at work running an Intel proc with Fx. 2.0.0.3 as well and everything works just fine. If un- and re-installing it a couple times doesn't work, post a list of other extensions you have installed. We may have ourselves a compatibility problem going on.

by KevinFreitas

6/4/2007 @ 5:35pm

I second the all for "showing the area of the rectangle as a percentage of entire screen" Nice work!

by Ben Edwards

6/10/2007 @ 6:18am

Nice tool to use if you don't want the big "web developer" on your machine!

by Rainer

6/17/2007 @ 5:10am

Hi Kevin - Great Extension - It makes my life as a web developer much easier every day. One of the most useful tools out there. Thanks! Looking forward to the future features ...

by Ralf Peter Korte

6/28/2007 @ 7:19am

Hi all !

Had the same problem Beth did, extension properly installed, worked for a while and recently, couldn't use it anymore (box wouldn't draw).

Had this same issue on 2 intel imac and simply un and re installing it once solved it !

Hope it can help others.

Great job anyhow, i use it all day long !

by gilleo

6/29/2007 @ 12:57pm

Great job you've made on this site, it helps me with overcoming my problems

by TÅ‚umaczenie angielski

7/3/2007 @ 5:18am

We use it on my workplace every day. It helps a lot in the daily work and is definitely one of my top extensions.

by Manyger

7/24/2007 @ 7:41am

Nice tool to use if you don't want the big "web developer" on your machine! thanks...

by sohbet

8/7/2007 @ 7:32am

Thanks!

by Jeff Keith

8/20/2007 @ 6:17am

Hi, It doesn't work after installing the latest Noscript.

Please advise. Thanks.

by Tony

8/24/2007 @ 7:47am

Update NoScript to 1.1.6.17.
This will fix it.

by Euro2008Fancamp

8/24/2007 @ 11:44pm

ok will try, thanks a lot

by Tony

8/29/2007 @ 12:44pm

I love this Extension but recently it stop working all together - and my life is now much more complicated :( . I don't know if it stopped working after the update to Firefox 2.0.0.6 or some other extension, but it did happen recently.

I see that other people have had similar problems. I have tried downgrading to 2.0.0.5 and removing all other extensions and it is just not working. Any ideas as to what might be causing this and does anyone have any possible solutions?

by Luis Madrigal

8/30/2007 @ 9:04am

Euro2008Fancamp is right, upgrading NoScript to 1.1.6.17, here is the link just in case (http://software.informaction.com/data/releases/noscript-1.1.6.17.xpi) will fix the problem.

Thanks.

by Luis Madrigal

8/31/2007 @ 8:22am

Euro2008Fancamp and Luis Madrigal are right -- upgrading to latest version of NoScript will fix the problem with MeasureIt not working.

Thanks for posting that info...

by StrangeAttractor

9/7/2007 @ 7:43am

Great tool-just what I needed...thanks so much!
All the best to you,
E.

by Elysia

9/24/2007 @ 9:06am

Great extension - thanks!

One suggestion though: could the 'button' be moved to the right i.e. the defacto standard position?

by DJK

9/27/2007 @ 9:13am

Any idea when the disappear Flash objects will be addressed? We do mostly Flash work and would love to use this extension.

Thanks,

Sam

by Samuel Neff

10/9/2007 @ 8:29am

Veramente un ottimo tool!

Lo userò certamente e lo sponsorizzerò sul mio blog.

by Emanuele Rosato

10/9/2007 @ 11:01am

wow

by john

10/11/2007 @ 7:10am

Not sure if it's some conflict with the rest of my system or not but recently MeasureIt started crashing my Firefox on certain websites - I think in conjunction with some DoubleClick JS although I'm not sure about that. Anyway, disabling it fixes the problem but obviously that's not ideal...

by Robin

10/23/2007 @ 11:49am

Are you still working on this project. I would love to see the ability to resize width and height with keyboard maybe, shift + ctrl + alt + arrow keys or something? I use and like the tool, thanks for making it.

by buddy

11/11/2007 @ 10:10am

Great tool!
Feature request: Diagonal measurement displayed

by Anders

11/30/2007 @ 4:04am

I hope you have time to update this to work with FF 3(beta1)

by Arpa

12/4/2007 @ 11:38pm

I cant wait do FF 3 ! I`m a huge fan of FF2, especially I like lot of plugins. Thanks

Ps. Please delete my post below, I put my URL not corectly

by budowa stron

12/5/2007 @ 1:27pm

It's crashing the new version of Gmail and locks up my browser solid. :( I'll disable for now, but this is an indispensable tool in my arsenal. Hope to see a fix soon.

by Carol

12/7/2007 @ 10:55am

Thanks for writing this great extension, Kevin. You rule! (pun intended)

by Mike

12/18/2007 @ 1:10am

Great extension! It's great. More suggestions:

- Pre-sets (ie. 1024/768 for measuring screen resolutions)
- Cmd+C when ruler is active copies the W/H of it.

Great work!

by Niklas

1/6/2008 @ 6:53am

at Carol: wtf are you measuring Gmail for? Are you a developer for Gmail?

at Kevin: sexy sexy add-on! I want to be like you when I grow up.

by rojo

1/25/2008 @ 9:25pm

Is this ad-on available for Mozilla Firefox 3 Beta 2 ?

by hajan

2/16/2008 @ 4:41pm

I love this tool, can we hope to see it for firefox 3?

by Chris

2/20/2008 @ 11:12am

It won't work at all! I am using vs. 2.

by MindstormsKid

2/21/2008 @ 8:51am

The measure tool does not work on the following site http://app.com
You can click on the measure icon but if you try to measure something on the page it does not work.

by Tim

2/26/2008 @ 8:55am

One more thing, it erases the image under eg.flash, normal ?

by Wczasy na Kaszubach

3/6/2008 @ 1:34am

It's nice extension? thanks! ;)))

by Ted

3/18/2008 @ 12:15am

Any updates for Firefox 3? I miss this plugin!

by Ryan Doherty

3/18/2008 @ 1:22pm

one of the great add-on, but i am running ff3 and i am really missing it... any updates?

by henrich

3/19/2008 @ 8:54pm

538px div showed as 808px with this tool.

by Реферати

3/27/2008 @ 1:11pm

Another request for an updated for FF3 Betas and FF3 final. This extension rocks, I could use it like every day. I wonder if I can just change the extension to work myself.

by mike

3/27/2008 @ 10:09pm

Any updates for Firefox 3? I miss this plugin!

by DCNY

3/29/2008 @ 3:15am

looking for FF3B4

by Sir Not-Appearing-In-This-Flim

4/4/2008 @ 8:35am

There's a pretty simple way to make this great extension work for the firefox 3 betas.

Download the extension (save as...) and then rename it from *.xpi to *.zip

Extract the zip to a directory and edit the file "install.rdf" with notepad. Change the em:maxVersion key to something like:

4.0.0.*

zip the folder (or replace that file in your current zip) and rename it back to *.xpi

Go to about:config and add a boolean "extensions.checkUpdateSecurity" and set it to false

Now in the location enter the path to the xpi (including the filename) and hit enter to install.

There might be some bus but so far it's working for me and my life is easier again.

by binary_star

4/4/2008 @ 6:47pm

Thanks everyone for your patience. I'll get an update going and posted this weekend. Cheers!

by KevinFreitas

4/5/2008 @ 10:29am

Kevin, were will it be posted?

by Sir Not-Appearing-In-This-Flim

4/6/2008 @ 5:12am

Kevin, thanks! Can't wait to use your useful extension in the Firefox 3 betas.

by charlieMOGUL

4/6/2008 @ 10:15am

I love this tool, can we hope to see it for firefox 3?

by otogaz

4/6/2008 @ 4:53pm

Another vote for FF3. Thanks again!

by Tarwin

4/7/2008 @ 3:24pm

Waiting for firefox 3 version... Lovely tool thanks.

by BlogEv

4/8/2008 @ 6:59pm

another vote for FF3!

by vladimir prieto

4/10/2008 @ 2:22am

another vote for FF3!

by muschpusch

4/10/2008 @ 12:33pm

Some days ago I upgraded to FF3. Now I'm looking through my favourite extensions - and there's only one missing - MeasureIt!
I tried the usual install.rdf version number hack but there's other stuff missing.
After a little search on the web I found some hints that the web developer toolbar has a built in ruler. So I will use this one (Miscellaneous->Use ruler).

by Steffen

4/12/2008 @ 4:07pm

it erases the image under eg.flash, normal ?

ı think so

by evden eve nakliyat

4/15/2008 @ 10:10am

Thats what I was exactly looking for! Wow, it is just awesome.

Thanks

by adi

4/16/2008 @ 2:11am

Hi, nice extension... waiting for FF3

by Marco

4/16/2008 @ 9:13am

How is that update coming along Kevin?

by Dustin Brewer

4/16/2008 @ 10:40am

Kevin,

is there a way to switch pixels to inches?

Thanks

by adi

4/16/2008 @ 11:01am

I use this all the time, it's great. Looking forward to a version that works with Firefox 3 beta 5. Thanks!

by Jonathan

4/22/2008 @ 10:37am

I am willing to work on it more. It is awesome now, but i would keep it alive with all firefox future versions.

Thanks
Jack

by jack flower Jr

4/22/2008 @ 5:01pm

Sorry gang, it'll be updated soon. Thanks for your patience!

by KevinFreitas

4/23/2008 @ 5:06am

Thank you for this nice extension. It's really good.

by Nalko

4/23/2008 @ 7:42am

Newb question: How do I crag a ruler box onto the page? I've tried every combination of commands I can think of and nothing - I'm beginning to think that I've not enabled something in firefox to allow me to do it.

help please?

by Ahmed

4/29/2008 @ 1:45pm

Can't wait for the FF 3 upgrade!

by Greg

5/6/2008 @ 9:56am

This is an outstanding tool. Please make it compatible for FF3 :)

by Johnny

5/7/2008 @ 1:42pm

Add me to the FireFox 3 request pool!

by Rafe

5/7/2008 @ 8:57pm

I'm not sure how you would fix this, but the cursor turns nearly invisible over medium-gray backgrounds. Thanks for the extension, though; it works great otherwise.

by Ueli

5/17/2008 @ 11:17am

Can't make it work under FF3 rc1.

Browser version trick (install.rdf) didn't work.

by Bakyt Niyazov

5/19/2008 @ 1:02pm

I just upgraded to FF3 and realized that most of the extensions I use daily aren't available yet.
You, sir, have unintentionally forced me to downgrade firefox.
I'll be checking back often

by Patrick McGovern

5/19/2008 @ 2:09pm

Hey Kevin, love this tool. Your work on this extension is greatly appreciated. Do you need any help getting it compatible with FF3 RC1? If not, do you have an ETA on that. It's one of the few extensions I can't live without.

Thanks,
RyanC

by RyanC

5/21/2008 @ 9:42pm

I can't live without this outstanding extension. FF3 please.

Thanks.
Pavel.

by Pavel B

5/22/2008 @ 1:39am

Works with FF3 RC1 by adding
content measureit chrome/measureit/content/measureit/ contentaccessible=yes
in chrome.manifest

... and by changing max version (3.1 works) in install.rdf in xpi package

by H.D

5/27/2008 @ 3:37pm

Thanks for awesome tool.. I hope we will be fine with ff3

Thanks

by Neil Dream

5/29/2008 @ 2:40pm

loads ok in FF3 rc1 but does not work at all :-(

by loads ok in FF3 rc1 but does not work at all

5/30/2008 @ 3:34pm

love this tool. Your work on this extension is

by brc

6/1/2008 @ 1:34pm

So helpful! I've used this for years, please god update it for Firefox 3 soon!

by David C.

6/1/2008 @ 1:41pm

I use this almost daily please update it for ff3!

by chase

6/3/2008 @ 8:05am

One of my favorite ext. please port it to ff3

by gene

6/4/2008 @ 1:03pm

$5 to anybody who gets it working with ff3 rc1

by Mike

6/5/2008 @ 2:51am

loads ok in FF3 rc1 but does not work
how can ı repair that

by evden eve nakliyat

6/7/2008 @ 6:45pm

Thats super ultra useful.. I hope we can map the number of pixels to Points..

Anyway, thanks

by Dave

6/9/2008 @ 4:15am

My life is miserable without MeasureIt on Firefox 3 RC. I need it like 50 times a day, but it crashes Firefox 3 RC if I force it to work. (It worked until late in the alpha cycles, but then started to do nasty things.)

by Sebastian

6/10/2008 @ 11:46am

I'm a big fan of this extension... PLEASE make it work in Firefox 3 (RC2+)

by Phil Freo

6/10/2008 @ 11:54am

I'll test and post a 3 compatible version tonight. Thanks everyone for your patience and for using MeasureIt!

by KevinFreitas

6/10/2008 @ 11:57am

Steffen mentioned this above, but the Web Developer toolbar already has something that gets the job done in FF3.

Miscellaneous > Display Ruler.

This works equally well and it appears to me to be the only thing FF3 currently has support for, so i'll be using this.

Still, the MeasureIt extension is super cool!

by Jeremy

6/11/2008 @ 8:52am

Good extension ! I use it since... (i think 5 months)

Please create "Future Features" :D

Thx ! (Sry for my bad English)

by M@x

6/12/2008 @ 5:09am

Sadly I get errors when trying v 0.3.8 on FF 3.0

At start up:
Security error: Contents on [URL of displayed web page] is not allowed to receive data from or link to chrome://measureit/skin/measureit.css.
Clicking to turn measureit on:
Security error: Contents on [URL of displayed web page] is not allowed to receive data from or link to chrome://measureit/content/measureitOverlay.js.

(My translation from Swedish text in Error Console)

by Anders

6/12/2008 @ 5:18am

Oops.
H.D. had posted the solution:
"Works with FF3 RC1 by adding
content measureit chrome/measureit/content/measureit/ contentaccessible=yes
in chrome.manifest"

by Anders

6/12/2008 @ 8:47am

I don't have a chrome.manifest file on RC3.

by Dynek

6/12/2008 @ 9:40am

This works on RC2 as well, by adding this line to the browser.manifest file:

content measureit chrome/measureit/content/measureit/ contentaccessible=yes

Awesome tip Anders, thx!

by NWM

6/12/2008 @ 7:00pm

Pretty much the most handy FF extension out there. This thing rocks. Good going.

by Matt

6/13/2008 @ 7:04am

Ladies and gentlemen, the fix is in. Had to re-org my extension files a bit to bring the up to code, so to speak. But now all is well and running smoothly for Fx 3.

Thanks and I'm going to make an effort to get back into more extension development and updates. It's been a while but I remember now why I love it so much -- mostly because of you.

by KevinFreitas

6/13/2008 @ 9:36am

Where can we find the new update? Thanks for this awesome tool, Kevin!

by Kate

6/13/2008 @ 10:24am

This is one of the most useful extensions... Now I can use FF 3

by Blaque

6/13/2008 @ 11:25am

@Kate: Right up at the top of this page or by going to your add-ons and looking for an update.

by KevinFreitas

6/13/2008 @ 2:12pm

Thanks a bunch for this amazing tool... keep up the good work

by Day Dream

6/13/2008 @ 2:14pm

Thank you! This is awesome :)

by dreamhost promo code

6/14/2008 @ 8:47pm

Just wanted to let you know that the "install" button at the Firefox Add-on site did not work, at least not for me. But I got it from your site no problem.

BTW: Thank you for a great extension. I use it all the time when I design websites. Cheers!

by Alexandre

6/17/2008 @ 10:40pm

nice! a little suggestion, to make MesureIt more accurate and usefull, the crosshair weight should be only 1pixel.

by alexDeLaReunion

6/18/2008 @ 9:00am

I got 0.3.8 to install on FF3 on OS X by right-clicking on the link at the top of this page, saving to desktop, and dragging the xpi file into the FF window. Just clicking on the link gave an "invalid install package" error when I tried that way.

by Chris

6/18/2008 @ 11:58am

One more request to update it for FireFox 3, this is one of the extensions that i really use daily, and that FF3 is not compatible with.
Thank you.

by Niko Neugebauer

6/19/2008 @ 1:18am

@Chris. Worked for me too on OSX/FF3. Thanks for the tip

by Gee

6/19/2008 @ 1:30pm

Thank you, thank you, thank you! I was a little "freaked out" when the extension I had for FF2 wouldn't work in FF3. Did I say "thank you"?

by Trena

6/24/2008 @ 12:30am

Hi Kevin,

I use this tool nearly eveyday =) Very useful and essential, thank you!

I came here looking for a shortcut key actually. But after reading through all the "feature requests(demands)" I feel that you should not be adding more features.

MeasureIt is now small, unobtrusive and essential. Please don't turn it into a webdeveloper toolbar thingy where you have a hundred options but only use 5 of them. Right now it's beautiful and perfect for the job.

I'm not talking about the issues though. Issues always have to be fixed. (Like disappearing flash etc)

Just saying please don't make MeasureIt a bloat-ware.

Thanks and Cheers,

by Alex

6/24/2008 @ 2:12am

Very fine tool, thank you for that :)

by Edelsteine

6/25/2008 @ 10:16am

The plug-in doesn't work for me. The screen becomes grayed, and the cross-hairs show, but when I click and drag, no ruler box appears. Sometimes, it even shows a prohibited sign.

Are there known incompatiblities of of this plug-in with others, like ColorZilla, FireShot, Bugzilla, Web Developer, etc.?

Thanks,
Mike

by Michael S.

6/26/2008 @ 2:50am

@Alex

I actually came here looking for a keyboard shortcut as well.

Otherwise, this is an excellent extension! Many thanks.

by Marli

6/26/2008 @ 9:01am

thanks for the 0.38 update kevin!

by vladimir prieto

6/30/2008 @ 8:26pm

Thanks for useful tool.. Seems not working with FF3.. can we have access the source code?

Thanks

by Sam dream

7/1/2008 @ 10:02am

Security error: Contents on [URL of displayed web page] is not allowed to receive data from or link to chrome://measureit/skin/measureit.css.
Clicking to turn measureit on:

ı have a problem like that how can ı changew that
help me pls

by evden eve nakliyat

7/6/2008 @ 1:26pm

Nice tool. However, when a measuring tool is used to measure distances, the tool should measure from exactly one point to another point. Not after the point to before the point. In other words, if you measure a 200 pixel wide box, and you put the ruler across the box starting at exactly where the one pixel borders start and stop, the measuring results should be 200, not 202. Otherwise it is a great tool.

by Pat

7/7/2008 @ 1:04pm

Thanks for the update, but Mozilla seems to still not know it's ready for FF3. I've been checking every day since I upgraded for the update to become available, and here it is on your site! Anything we can do for other people relying on their browsers to tell them?
Jen

by jen

7/8/2008 @ 1:29am

Hello Kevin. I'm a girl from Austria, and working with your extensions. Thanks.

by Iris

7/8/2008 @ 3:35am

Nice to see its FF3 compatible now - one of my few 'vital' extensions for getting divs to lay right.

One bug I've found. if FF looses focus to another window and then gains it again - flciking between editor and browser for instance - the MI icon is still active, but the cursor does not switch back to the cross-hair

by Steve B

7/9/2008 @ 11:32am

A keyboard shortcut would be a nice to have.

by Raul CouGa

7/10/2008 @ 11:54am

Hi Kevin, please visit my site. And make a visite by mi.

by Günther Gugl

7/10/2008 @ 10:57pm

LOVE IT!! I was just wishing for a utility like this the other day. My site is under construction and this is going to be invaluable to me! Thanks Kev!

by Kelly Hudson

7/13/2008 @ 3:28am

I like that it now has a positionable toolbar button, but it needs an option to turn-off the status bar button, then I can just have it up on my toolbar.

by Jimmy

7/18/2008 @ 2:52am

Does this not promote pixel perfect designs?

Instead of scalable relative and fluid ones?

by Kai Hendry

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