Author’s Description:
Greasemonkey is a Firefox extension that allows you to customize the way webpages look and function by using small bits of JavaScript.
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.It 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.
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