Search Results for tag "css"

Stylish-Custom Requires Restart

custom additions to Stylish extension

Rated 5 out of 5 stars (3)
731 users
Updated October 18, 2016

Dark Purple Youtube Theme

Makes the layout of Youtube Dark Purple while retaining the original feel.

Rated 5 out of 5 stars (14)
2,704 users
Updated October 17, 2016

Firebug Featured

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

Rated 5 out of 5 stars (1,842)
2,024,418 users
Updated October 10, 2016

QuickJava Requires Restart Featured

Allows quick enable and disable of Java, Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth.

Rated 5 out of 5 stars (208)
255,004 users
Updated October 8, 2016

Font Finder (revived)

Get all CSS styles of selected text

Not yet rated
197 users
Updated October 2, 2016

Website Theme Manager

Website Theme Manager allows you to change any website's appearance

Rated 4 out of 5 stars (3)
262 users
Updated October 1, 2016

StylRRR - Barebones Userstyle Injector

Lets you add userstyles ( website and browser themes) with a mini addon.

Rated 5 out of 5 stars (1)
17 users
Updated September 30, 2016

Google Material Design Paper Theme - Best Theme

Flat material theme. Minimal paddings, minimal borders, minimal colors.

Rated 5 out of 5 stars (6)
1,122 users
Updated September 22, 2016

DevTools Prototyper

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

Rated 5 out of 5 stars (5)
292 users
Updated September 21, 2016

Print Edit WE

Print Edit WE provides facilities to edit the contents of a web page prior to printing or saving. Elements in the web page can be edited, formatted, hidden or deleted. Unwanted content, such as adverts and sidebars, can easily be removed.

Rated 4 out of 5 stars (1)
235 users
Updated September 15, 2016

HTML Content Blocker (JS, CSS, IMG, etc)

Blocks desired HTML contents (script, style, image, object, media)

Rated 5 out of 5 stars (4)
1,440 users
Updated August 18, 2016

Web Developer Requires Restart Featured

The Web Developer extension adds various web developer tools to the browser.

Rated 5 out of 5 stars (249)
448,514 users
Updated August 18, 2016

Stylish Requires Restart Featured

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

Rated 4 out of 5 stars (836)
449,292 users
Updated August 9, 2016


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 (9)
345 users
Updated August 4, 2016

Mozilla Archive Format, with MHT and Faithful Save Requires Restart Featured

— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!

Rated 4 out of 5 stars (319)
157,806 users
Updated June 11, 2016

Font Finder Requires Restart 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 (71)
35,157 users
Updated June 5, 2016

Darker Background Brighter Font

change every web page style,darken background color and brighten text color,prevent users see high brightness web page.

Rated 5 out of 5 stars (7)
394 users
Updated June 5, 2016

Color That Site! Requires Restart

Change the colors of web sites. With the move of some sliders, you change the foreground and background colors of a site.

Watch the video for a short introduction.

Rated 4 out of 5 stars (80)
6,233 users
Updated June 3, 2016

Personas Interactive Theme Engine Requires Restart

Created by where you can Build Your Own Browser Theme. Remove the limits of Personas. Get unlimited Personas, legible text; use with Firefox themes installed. Create your own Personas gallery; full CSS3 backgrounds, and more

Rated 2 out of 5 stars (37)
11,612 users
Updated April 27, 2016

Custom Style Script (Inject desired CSS or JS)

Add Custom JavaScript Codes or Styles to any Page.

Rated 5 out of 5 stars (4)
1,743 users
Updated March 14, 2016