Search Results for tag "css"


Customise the App Button.

Rated 4 out of 5 stars (9)
799 users

User Style Manager No Restart

Easiest way to Add and Manage Custom User Styles in Firefox.
Add, Edit, enable, disable and delete in-numerous User Style Sheets to redesign the Firefox and the Web.

Rated 4 out of 5 stars (24)
2,001 users

Developer Tools - toolbar button

Access and activate the native Firefox Web Developer tools faster through this toolbar button (menu). Button can be placed on any toolbar.

Rated 4 out of 5 stars (9)
12,890 users

CSS Reloader

CSS Reloader is an extension that allows you to reload all the CSS of any site without you have to reload the page itself.

Rated 4 out of 5 stars (37)
7,584 users

Customize Your Web

Customize Your Web (CYW) let's you customize your favorite websites with just a few clicks. What Greasemonkey is for developers is CYW for non-developers. You can remove/rearrange /modify elements, add keyboard shortcuts and do many other things.

Rated 4 out of 5 stars (69)
2,118 users

Ad-blocker for Gmail No Restart

Hide ads in Gmail, and more cool stuff, simply with CSS.

Rated 4 out of 5 stars (14)
16,588 users

Originz No Restart

A source viewer that enables you to view not only page's HTML source but also style sheets and scripts. It uses Prism syntax highlighter and it can beautify(unminify) the source code.

Rated 4 out of 5 stars (8)
396 users


An editor with real time syntax highlighting which allows edit, run and test CSS, HTML and JavaScript code. Phoenix will tell you how many CSS and JS files are loaded into a page, how big these are, it will let you edit, pack and de-obfuscate them.

Rated 4 out of 5 stars (42)
3,998 users

DarkenBackground No Restart

replace white or very bright background on webpages with slightly darker colors

Rated 5 out of 5 stars (3)
675 users

DevTools Prototyper No Restart

This add-on adds JS Fiddle style code prototyping to Firefox DevTools.

Rated 5 out of 5 stars (3)
265 users

Font Finder Featured

FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.

Rated 4 out of 5 stars (67)
39,040 users

Dafizilla ViewSourceWith

The main goal allows users to open (and in some cases edit) page source with external applications.

Rated 4 out of 5 stars (59)
7,349 users

FireFile No Restart

Firebug extension to save the CSS files edited with firebug live to your web server. That makes Firebug become the first remote-save live-preview CSS editor and allows ultra-fast webdesign and prototyping.

Rated 4 out of 5 stars (67)
3,248 users

CSS Usage

Firebug extension to view which CSS rules are actually used.

Rated 4 out of 5 stars (38)
24,665 users

superUserContent No Restart

Dynamically load stylesheets from plaintext files in your profile

Rated 5 out of 5 stars (2)
70 users


Flips page direction from LTR to RTL and vice-versa.

Rated 4 out of 5 stars (6)
79 users


LiveReload refreshes a web page when files change.

This extension is deprecated. The latest version is available at

Rated 4 out of 5 stars (13)
5,147 users

Advanced Frame Designer

A tool to design frames directly in the web page. The integrated color picker supports also harmonic colors. Operating notes see the tooltips.

Rated 5 out of 5 stars (2)
2,374 users

Context Style Switcher

Change Page Style via context menu

Rated 4 out of 5 stars (8)
484 users

Dust-Me Selectors

Dust-Me Selectors is development tool to remove unused CSS selectors.

Rated 4 out of 5 stars (79)
19,181 users