Greasemonkey 1.15

A powerful Firefox extension that allows users to customize how a website is displayed
Greasemonkey is a handy and powerful Firefox extension that allows users to easily customize the way a website or web page is displayed or how it behaves.

To achieve this, Greasemonkey uses a database filled with hundreds of JavaScript scripts, found at Users should also check the website for detailed documentation.

Greasemonkey is an open source add-on designed to work with Mozilla Firefox 20.0 or later, as well as with the Epiphany and Flock web browsers. However, the Greasemonkey extension for Epiphany is distributed as part of the Epiphany-extensions package.

last updated on:
February 13th, 2014, 8:56 GMT
developed by:
Aaron Boodman
license type:
MIT/X Consortium License 
ROOT \ Internet \ Firefox Extensions


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1 Screenshot
Greasemonkey - The User Scripts management is integrated within the Firefox Add-Ons manager tab
What's New in This Release:
  • Enhancements:
  • Greasemonkey sends headers when making script update checks. (#1824)
  • Allow correct installation of even scripts with invalid duplicate UTF-8 BOMs. (#1823)
read full changelog

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