My Favorite Add-ons
About this Collection
My favorite add-ons
130 Add-ons in this Collection
View HTTP headers of a page and while browsing.
Lets the user direct the submission of a form to a new tab or window. [Bug #17754]
Customizes the new tab page. Add more tiles. Add the launcher from Firefox start. Have a background image. Set new tile images and titles. See recently closed tabs. And more...
Allows the download manager to also open in a tab or sidebar, and adds some optional display changes.
Adds the ability to create and edit entries in the password manager.
HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon
For Online HTML 5 validation, you need 0.962
Save an image of a web page (including Flash content) to a file. Web page screenshots may be captured interactively or from the command line. Options allow you to control the output format (PNG or JPEG), image file name, scaling, and much more.