Search Results for tag "css"

CSS Grid Inspector

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

Not yet rated
336 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)
488 users
Updated February 13, 2017

HTML Content Blocker Compatible with Firefox 57+

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

Rated 4 out of 5 stars (9)
693 users
Updated January 13, 2017

Crosshairify - Changes Cursor Compatible with Firefox 57+

Makes a cross-hair the default cursor. To disable just click 'disable'. This addon is designed to be very light and have very little impact on your web browser. Crosshairify changes the cursor style.

Not yet rated
7 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)
27,128 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 (189)
196,076 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)
107 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 (24)
521 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 (844)
330,910 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 4 out of 5 stars (11)
240 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 (75)
4,321 users
Updated June 3, 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 (14)
1,583 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 (28)
637 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 3 out of 5 stars (22)
6,429 users
Updated October 29, 2015

DarkenBackground

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

Rated 5 out of 5 stars (17)
623 users
Updated October 9, 2015

globalChrome.css Requires Restart

Provides global user stylesheet.

Not yet rated
493 users
Updated September 6, 2015

DOM Inspector Requires Restart

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

Rated 5 out of 5 stars (72)
75,053 users
Updated July 9, 2015

CSS Usage Requires Restart

Firebug extension to view which CSS rules are actually used.

Rated 4 out of 5 stars (40)
10,572 users
Updated May 27, 2015

Dafizilla ViewSourceWith Requires Restart

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

Rated 4 out of 5 stars (49)
3,716 users
Updated February 27, 2015

pesticide

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
171 users
Updated December 7, 2014