Web Development

Subscribe

Majestic Backlink Analyzer

Majestic Backlink Analyzer gives instant insight into the number of backlinks and domains linking to the URL and domain you are currently browsing. Majestic users can drill down to see the links, topics and add them to their Majestic bucket list.

Rated 4 out of 5 stars (23)
2,789 users

WCAG Contrast checker Requires Restart

Checks for compliance with the contrast levels, brightness and shine in the color combination of foreground and background of textual content based on the requirements of WCAG 1 and WCAG 2.

Rated 5 out of 5 stars (8)
3,172 users

Website City + Country Info Requires Restart

Shows the city (!) and the countryflag of the website you are browsing to. See IP, provider, Oranisation name, GEO coordinates and further useful infos for security, fun and SEO reasons.

Rated 4 out of 5 stars (24)
1,229 users

Firesizer Requires Restart

Allows you to resize the window to specific dimensions.

NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.

Rated 4 out of 5 stars (126)
15,015 users

Whois & Flags Firefox & Websites Popularity Rating Requires Restart

Display Country Flag indicating Website Physical Location (Country, State, City). Website Popularity (Live Visitor Statistics). Shows how many users are visiting any World Website per day. Website IP IPv6 Addresses, DNS, Hosting. IP Whois Lookup

Rated 4 out of 5 stars (19)
1,369 users

Tamper Data Icon Redux Requires Restart

Open Tamper Data with a toolbar icon, an item in the Tools menu, or from an item in the Web Developer menu in 6+.

Rated 4 out of 5 stars (3)
4,012 users

Accessibility Evaluation Toolbar Requires Restart

Support web developers in testing web resources for accessibility features.

Rated 4 out of 5 stars (16)
2,638 users

Chrome View Requires Restart

Open a page in Google Chrome (or SRware Iron) on Windows.

Rated 4 out of 5 stars (53)
4,468 users

PageRank Requires Restart

Faster | Lighter | Simpler. A very light weight addon to check Google PageRank and Alexa traffic rank for Mozilla Firefox.

Rated 3 out of 5 stars (36)
6,587 users

lori (Life-of-request info) Requires Restart

'lori' can tell you how long it takes to load
a page. Useful for web developers who are working on profiling, optimizing a web site.

Rated 4 out of 5 stars (23)
2,114 users

Click-to-Play Manager

Manages the Click-to-Play domain whitelist.

Rated 4 out of 5 stars (14)
1,632 users

Firediff Requires Restart

Track Changes in Firebug

Rated 4 out of 5 stars (16)
4,700 users

RefControl Requires Restart

Control what gets sent as the HTTP Referer on a per-site basis.

Rated 4 out of 5 stars (174)
51,260 users

Emoji Keyboard Compatible with Firefox 57+ Featured

A free extension of the web tool https://emojikeyboard.org. It helps input emoji in the web browser with an extensive search functionality.

Rated 4 out of 5 stars (77)
88,970 users

JavaScript Debugger Requires Restart

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

Rated 4 out of 5 stars (50)
76,560 users

FirePHP Requires Restart

FirePHP enables you to log to your Firebug Console using a simple PHP method call.

Not using Firebug 1.9+ on Firefox 8+? See http://firephp.org/

Rated 4 out of 5 stars (51)
19,434 users

PageRank Client Requires Restart

PageRank Client is a simple extension for displaying the Google PageRank of the websites you're visiting.

Rated 4 out of 5 stars (12)
1,219 users

Omnibug Requires Restart

Firebug extension for web analytics testing and debugging

Rated 4 out of 5 stars (4)
3,384 users

Xml Pretty Viewer

A simple tool to help you check xml document in Firefox.

Rated 4 out of 5 stars (8)
2,357 users

L-Square Responsive Design Inspector Requires Restart

Browser pixel rulers to help inspect window widths of adaptive designs. The add-on button acts as a toggle that adds rulers similar to a graphics app to measure the current window resolution.

Rated 3 out of 5 stars (5)
1,389 users