Userscript manager

<h2 id="functions">Functions</h2>
<p>A userscript is a computer program (written in <a href="/facts/JavaScript/XhhIIEsl">JavaScript</a>) containing metadata intended for use by a userscript manager. The metadata contains specific delimiters which help the userscript manager distinguish it from ordinary JavaScript files, along with configuration parameters used during installation.
</p><p>Typical functions of a userscript manager include:
</p>
<ul><li>Downloading, installing, and storing userscripts</li>
<li>Calling userscripts
<ul><li>Every time any webpage is opened, all the userscripts are scanned to see if their permissions match the page's URL, or any piece thereof, and the userscripts that match are run, enabling them to in turn process the content of the page, such as modify the way it looks, or add features to the page.</li></ul></li>
<li>Downloading dependencies (e.g. third-party libraries, images) during the execution of a userscript</li>
<li>Creating and editing userscripts</li>
<li>Saving userscripts to disk</li>
<li>Providing automatic updates</li></ul>
<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/Greasemonkey/tvlvx5qB">Greasemonkey</a></li>
<li><a href="/facts/Tampermonkey/kovDJYmU">Tampermonkey</a></li>
<li><a href="/facts/List_of_augmented_browsing_software/VR3GuvPS">List of augmented browsing software</a></li></ul>

<h2 id="external-links">External links</h2>
<ul><li><a href="https://violentmonkey.github.io/">Violentmonkey</a></li>
<li><a href="https://addons.mozilla.org/firefox/addon/firemonkey/">FireMonkey</a> – combined userscript & userstyle manager add-on to Firefox</li>
<li><a href="https://8-p.info/greasekit/">GreaseKit</a></li>
<li><a href="http://creammonkey.sourceforge.net/">Creammonkey</a></li>
<li><a href="https://github.com/shenruisi/Stay">Stay</a> – for Safari and iOS</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>"Greasy Fork - safe and useful user scripts". greasyfork.org. Retrieved 2024-04-26. <a href="https://greasyfork.org/en#:~:text=User%20scripts%20put%20you,and%20easy%20to%20use.&text=User%20scripts,to%20use.&text=put%20you,and%20easy" target="_blank">https://greasyfork.org/en#:~:text=User%20scripts%20put%20you,and%20easy%20to%20use.&text=User%20scripts,to%20use.&text=put%20you,and%20easy</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
</ol>

Userscript manager open-in-new

Userscript manager