Greasemonkey is a userscript manager made available as a Mozilla Firefox extension.

Greasemonkey enables users to install scripts that make on-the-fly changes to web page content after or before the page is loaded in the browser.

Greasemonkey can be used for customizing page appearance, adding new functions to web pages (for example, embedding price comparisons within shopping sites), fixing rendering bugs, combining data from multiple web pages, and numerous other purposes.

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Lisbon <b>Affiliate</b> Conference 2018 day two recap