User Scripts Apr 2026

User scripts are small snippets of code (usually JavaScript ) that let you rewrite how the web works on your own computer. Instead of waiting for a website to add a feature you want, you can simply "script" it into existence. 🛠️ The "Magic" of Browser Manipulation

: A lightweight, open-source alternative favored for its clean UI. User Scripts

: Hide annoying sidebars, pop-ups, or "promoted" posts on social media. User scripts are small snippets of code (usually

To use these scripts, you need a —a browser extension that "hosts" and runs your code: User Scripts

Because user scripts run directly in your browser, they have access to the data on the pages you visit.

: The original manager for Firefox that started the user scripting movement. 🔒 Safety and Trust