Search Results for tag "css"

UserStyles™ No Restart

UserStyles™ allows you to change any website's appearance; Choose your desired style from

Not yet rated
77 users
Added July 22, 2015

Custom Style Script No Restart

Add Custom JavaScript Codes or Styles to any Page.

Rated 5 out of 5 stars (2)
213 users
Added July 9, 2015

Policy Control (noScript, noCSS, noMedia, ...) No Restart

This extension helps you quickly disable and enable different types of resources such as JavaScript, CSS, and Media. The extension can be used to increase privacy as well as saving bandwidth by blocking unwanted contents.

Rated 4 out of 5 stars (1)
519 users
Added July 6, 2015

HTML Content Blocker No Restart

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

Not yet rated
124 users
Added June 21, 2015

Youtube Dark Purple No Restart

Makes the layout of Youtube match the dark style of the navigation bar of Twitch while retaining the original feel.

Rated 5 out of 5 stars (1)
447 users
Added June 2, 2015

DevTools Prototyper No Restart

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

Rated 5 out of 5 stars (3)
209 users
Added October 25, 2014

pesticide No Restart

Cascading Style Sheets can be tricky. Placing an outline on every element can help you figure out what is going on.
This extension inserts the Pesticide CSS into the current page, outlining each element to better see placement on the page.

Not yet rated
160 users
Added October 24, 2014


Provides global user stylesheet.

Not yet rated
89 users
Added February 23, 2014

superUserContent No Restart

Dynamically load stylesheets from plaintext files in your profile

Rated 5 out of 5 stars (2)
67 users
Added January 20, 2014


Speed up your testing and debugging times with PourBico. By intercepting HTTP requests, PourBico allows you to modify each response (headers and body) via inline edits or by replacing resources with local or external ones.

Rated 5 out of 5 stars (4)
377 users
Added October 16, 2013

Stylish Tools

Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey

Rated 5 out of 5 stars (2)
1,219 users
Added April 3, 2013

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 (1)
1,362 users
Added March 2, 2013

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)
348 users
Added December 14, 2012

SiteCheckr No Restart

Analyzes your websites with your custom ruleset.

Rated 5 out of 5 stars (1)
174 users
Added April 13, 2012

Ad-blocker for Gmail No Restart

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

Rated 4 out of 5 stars (14)
16,207 users
Added February 29, 2012

Stylish Sync No Restart

Sync engine for Stylish with backup / restore facility.

Rated 5 out of 5 stars (20)
6,230 users
Added February 24, 2012

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 (25)
1,942 users
Added February 5, 2012

Fresh CSS

Reload all stylesheets in a page using a customizable hotkey or button.

Rated 5 out of 5 stars (2)
133 users
Added January 9, 2012

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)
11,884 users
Added December 6, 2011


Customise the App Button.

Rated 4 out of 5 stars (9)
572 users
Added October 15, 2011