Greasemonkey is a Firefox extension that allows you to customize the way webpages look and function.
Greasemonkey is a Mozilla Firefox extension that allows users to install scripts that make on-the-fly changes to HTML web page content on the DOMContentLoaded event, which happens immediately after it is loaded in the browser (also known as augmented browsing).
As Greasemonkey scripts are persistent, the changes made to the web pages are executed every time the page is opened, making them effectively permanent for the user running the script.
Greasemonkey can be used for adding new functions to web pages (for example, embedding price comparisons within shopping sites), fixing rendering bugs, combining data from multiple webpages, and numerous other purposes.
Hundreds of scripts are already available for free. And if you’re the tinkerer sort, you can also write your own. Available at http://userscripts.org
Bug fixes in this release:
- GM_openInTab() fails in Firefox 3. (#1361)
- Firefox 5: Error in Add-ons Manager. (#1367)
- Add “get user scripts” link to the Add-ons Manager. (#1213)
- Pass site cookies when downloading scripts. (#1359)