Firefox Extensions
Useful Firefox extensions for Designers and Web-Developers.
Capture and annotate screenshots
Instantly preview websites on different devices
Simple color picker and eyedropper
Developer news and resources
Fill out web forms with dummy data
Download images from web pages
Format and syntax highlight JSON
Check contrast levels for accessibility
Overlay an image over a web page to compare
Outline elements on web page for easy visualization
Test responsive design of websites
Extract color palette from website
Customize the appearance of web pages
Web design debugging tool
Find out the technology stack of any website.
Toolbar for web development tasks
Identify fonts on web pages
Discover technologies used on websites
Resize browser window to predefined dimensions