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Measuring screen elements in pixels 17 comments Create New Account
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Why didn't I think of that?

Wheels

A much better option than Free Ruler is PixelStick. It isn't in the way as much as Free Ruler, and it lets you measure angles and distances along an angle too.

Yeah, I've been doing this for a while now. It's so fast and easy for web design. I also didn't think it was a hint, but it can save tons of time. I'm glad others will know about this now.

Rulers does it too. CMD+K = Auto measure
I use apple's own Art Directors Toolkit which has a ruler, but I like the screen cap method.

A+

ditto for using it for years and not thinking it was hint-worthy.
Note: the hint requires at least Leopard. The coordinates aren't shown in Tiger.

Bonus tip: hold down the spacebar after you start dragging, and you can move your entire selection around without starting over. Makes it easy to get the positioning exactly right.
I formed this habit in Illustrator, and at some point I must have tried it as an automatic reflex when taking a screenshot. Was surprised and delighted that it worked. I believe this feature was added in Snow Leopard.

Hey that's really cool. That seems tip-worthy to me in and of itself.
Rob

I agree. It's a great tip, and some great tips here in the comments.
I love the part about holding down the spacebar after you start dragging.
I just tried PixelStick and I'm grateful to have learned of it here, in these comments.
Thanks!

PixelStick is my favorite measuring tool, but, honestly, i never thought to use the screen capture..
I think that's a really good tip, thank you!

I love the spacebar trick - very neat! And also really pleased to have found out about PixelStick - I won't use it for everything but I think I'll certainly use it enough that I've already given it a space on my Dock!

I never thought of using modifier keys for screen capture, but hey, it actually works:
shift: horizontal or vertical selection only, depending on the movement you were making
option: use a centered starting point
option-shift: like shift with centered starting point
space: move it around
so cooool ... thanks .....

Mac Os Mojave

For quick screen measurement, I use the G-Ruler widget. Shows pixels, picas, inches & cm in both a width and height mode. Bring in widgets, move the ruler, move the mouse cross hair along the ruler and bingo, it tells you the value.
I've hacked mine so the ruler is wider (1250, soon to be 1920) and made the graphic for the 'ticks' much sharper. Also added individual pixel marks up to the first 100. I'll probably submit my update to the creator when I'm done... but other things always get in the way. It'd be nice if the ruler width was draggable! Then I could make it whatever width/height I wanted...even measure across multiple screens.
For added accuracy, after the ruler is visible, zoom the screen (CMD + OPT + + .... I don't like CMD + mouse), turn off blur CMD+OPT+ and you can get very anal with your pixels.
I love PixelStick too! Great tip there.

cool !
I use the screen zoom feature for handicapped people and have set it so holding down 'ctrl-alt-cmd' and using the scroll-wheel zooms the screen. Maybe good to zoom in first to measure more precisely.
I use screenshots a lot and was blown away by the modifier keys working !!

Hi guys,
I've recently created a small app that is just amazing when it comes to measuring items on screen. It's workflow is a lot better than a standard ruler. Check it out at http://pixf.it
It automatically finds the edges of the item you want to measure offering you a choice of copying the dimensions to the clipboard in a couple of different formats. Hope you enjoy it.
Cheers!

Mac Os Versions

Along with a few tools that you have to buy, you can still measure pixels on the Mac with its stock application. There is a Grab utility, you can capture screen selection, it will create window with an image of selected area (not saved to the disc yet), then you can go to Edit -> Inspector and it will show dimensions of selected area (it will also show dimensions as a tooltip during selection process). Good thing is that captured image isn't saved to the disc, you can just dismiss it. Not great, but does the job. It also supports delayed capture which is good for capturing popup menus and such.

Mac Os Download

I second the recommendation of PixelStick. Its an awesome, light and handy little app for anyone measuring (in any app or in maps) and working with colors.
http://plumamazing.com/mac/pixelstick

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