To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Pixel Perfect 188.8.131.52-signed No Restart
Pixel Perfect is a Firefox/Firebug extension that allows web developers and designers to easily overlay a web composition over top of the developed HTML.
About this Add-on
Selecting the "Lock?" option will allow you to firebug elements on the page that are below the active overlay. This is handy if you want to adjust the page in real time to match the active overlay.
The overlay opacity can also be adjusted for specific use cases.
The Development Channel lets you test an experimental new version of this add-on before it's released to the general public. Once you install the development version, you will continue to get updates from this channel. To stop receiving development updates, reinstall the default version from the link above. Install development version
Caution: Development versions of this add-on have not been reviewed by Mozilla and can't be installed on release versions of Firefox.
- Version 2.0.4-beta.1: