Search Results for tag "css"

Font Inspector (WebExtension) Compatible with Firefox 57+

Click on any element to get the font info in a page popup

Not yet rated
3 users
Updated May 17, 2017

Font Finder (revived) Compatible with Firefox 57+ Featured

Get all CSS styles of selected text

Rated 5 out of 5 stars (14)
8,992 users
Updated May 3, 2017

Web Developer Requires Restart

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

Rated 5 out of 5 stars (262)
404,911 users
Updated April 5, 2017

Firebug

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 4 out of 5 stars (2,071)
1,756,378 users
Updated March 1, 2017

CSS Grid Inspector

This tools is deprecated in favor of the built-in Firefox Developer Tools. See below for more information.

Not yet rated
447 users
Updated February 25, 2017

DevTools Prototyper

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

Rated 5 out of 5 stars (7)
632 users
Updated February 13, 2017

Stylish-Custom Requires Restart

custom additions to Stylish extension

Rated 5 out of 5 stars (6)
1,021 users
Updated January 20, 2017

HTML Content Blocker Compatible with Firefox 57+

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

Rated 4 out of 5 stars (5)
1,155 users
Updated January 13, 2017

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 (75)
33,939 users
Updated December 1, 2016

QuickJava Requires Restart Featured

Allows quick enable and disable of Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth. (Read details for info on Java with FF52+!)

Rated 5 out of 5 stars (188)
252,772 users
Updated October 8, 2016

Website Theme Manager

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

Rated 4 out of 5 stars (3)
202 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 (22)
745 users
Updated September 30, 2016

Stylish Requires Restart

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 (815)
412,797 users
Updated August 9, 2016

Originz

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 5 out of 5 stars (10)
334 users
Updated August 4, 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 (74)
6,128 users
Updated June 3, 2016

Personas Interactive Theme Engine Requires Restart

Created by http://BrandThunder.com 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 (39)
8,635 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 (8)
5,971 users
Updated March 14, 2016

Policy Control (noScript, noCSS, noMedia, ...)

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 (13)
3,564 users
Updated February 10, 2016

User Style Manager

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 (31)
1,220 users
Updated January 27, 2016

LiveReload Requires Restart

LiveReload refreshes a web page when files change. Requires the official LiveReload for Mac app or another compatible third-party server/plugin.

Rated 4 out of 5 stars (23)
8,636 users
Updated October 29, 2015