Bookmarklets and Userscripts

What is this?

Bookmarklets and Userscripts are tools that run in your web browser to modify the page you are currently viewing. They're a great way to improve your experience of a webpage without needing the website owner to add new features or functions.

Guides: How to Use Bookmarklets | Userscript Beginners How-To by OpenUserJS.

Tools for AO3 Users

Tools for Other Sites

Just For Fun

Got a script idea? Bugs? Send them to