JavaScript

by Zulkarnain K.

25 Add-ons in this Collection

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 993 reviews

1,302,592 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

iMacros for Firefox by Ipswitch

Rated 4 out of 5 stars 395 reviews

438,924 users

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 50 reviews

119,457 users

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.

JavaScript Deobfuscator by Wladimir Palant

Rated 5 out of 5 stars 20 reviews

56,257 users

This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.

Scriptish by Erik Vold, Nils Maier, others

Rated 4 out of 5 stars 118 reviews

63,791 users

The greatest user script engine on the Internet (a fork of Greasemonkey).

JSONovich by mjgiarlo, Will Elwood

Rated 4 out of 5 stars 35 reviews

10,318 users

Pretty-prints JSON content in the browser for easy, unobtrusive viewing.

PrefBar by Manuel Reimer

Rated 5 out of 5 stars 39 reviews

16,530 users

The all in one toolbar(item). Houses and manages bigger amounts of buttons (Clear Cache, Clear Cookies, ...), Menus (User Agent spoof...) and checkboxes (Javascript, Flash, ...). Extensible from online-database or with self created buttons.

JavaScript Terminal by Paul Rouget

Download Now

Experimental

Rated 4 out of 5 stars 5 reviews

2,705 users

JavaScript Terminal for Firefox.

Custom Buttons by Yan, cubegm, others

Rated 4 out of 5 stars 101 reviews

64,775 users

Gives a possibility to create custom toolbarbuttons...

Execute JS by Rudolf Noe

Rated 5 out of 5 stars 13 reviews

5,503 users

Execute JS is a enhanced JavaScript-Console, where you can comfortably enter and execute arbitrary JavaScript-Code and modify functions...

Developer Assistant by Ted Mielczarek, Gavin Sharp, others

Rated 4 out of 5 stars 46 reviews

3,058 users

A suite of tools for developers.

Javascript Command by max1million

Download Now

Experimental

Rated 4 out of 5 stars 13 reviews

1,584 users

For writing/testing javascript on Firefox windows (extension development, etc), web pages, and bookmarklets.

Ubiquity by matyr

Download Now

Experimental

Rated 5 out of 5 stars 124 reviews

1,277 users

An extension that allows for the use of dynamic commands in Firefox.

JavaScript Object Examiner by Chuck_Baker

Download Now

Experimental

Not yet rated

917 users

Display JavaScript object methods and properties for any available scope.

JSON Inspector by Zulkarnain K.

Download Now

Experimental

Not yet rated

400 users

Inspect JSON object from a URL or entered data.
Requires either DOM Inspector or DOM Inspector Plus! [dm] extension.
  1. 1
  2. 2
Results 115 of 25

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections

More by this User

See all collections by this user