Worked fine and met my expectations, but doesn't work anymore. As I click the icon, nothing happens. I removed it and reinstalled without change. What should I do? Regards, Marc

A really handy addition allowing for improved design of web pages.

This extension is absolutely invaluable. It helps me figure out so many elements on a screen as I design websites.

Does not let you adust the dimensions once you take your finger off of the key, like you can do when cropping a photo, for instance. If the cursor starts slightly off of where you want it, you have to start all over again.

Perfeito. Facilita demais o meu trabalho.

Doesn't help much, because you can't move the selected area or correct/change its borders after selection. That means, if you did not hit the area to be measured pixel-exactly at the first go, you have to repeat the measurement until it fits as desired sometime.