A userscript is a kind of lightweight and less privileged browser extension written in JavaScript used to modify webpages. Userscripts may use the special API, usually referred asGM_API, allowing them to bypasssame-origin policy and store data in separate storage not accessible to web pages. The technology was initially introduced in theGreaseMonkey extension forFirefox web browser, and then spread to other browsers, sometimes built-in, like inPresto-based Opera, sometimes with help of extensions, like inChromium-based browsers. The most famous catalogs of userscripts areGreasyFork andOpenUserJS.

🐒 Show current site all UserJS，The easier way to install UserJs for Tampermonkey. 显示当前网站的所有可用Tampermonkey脚本

• UpdatedDec 3, 2022
• Vue

🐒一些修改自网络的油猴脚本 Some Tampermonkey scripts modified from the internet

• UpdatedOct 6, 2025
• JavaScript

在豆瓣电影页面里添加一个指向海盗湾的链接

• UpdatedSep 4, 2021
• JavaScript

[userscript] Adds buttons to save images and videos in Twitter, also does some other enhancements. (Twitter image and video downloader)

• UpdatedSep 21, 2025
• JavaScript

Phoenix is a suite of configurations & advanced modifications for Mozilla Firefox, designed to put the user first - with a focus on privacy, security, freedom, & usability.

• UpdatedOct 12, 2025
• JavaScript

Saves your time on games giveaway sites.

• UpdatedSep 12, 2025
• JavaScript

🦊 Awesome Firefox

• UpdatedJul 7, 2025
• JavaScript

Config (user.js) for Mozilla Firefox

• UpdatedAug 23, 2025
• JavaScript

Removes Mozilla spyware from Firefox and makes Firefox more secure

• UpdatedMay 28, 2023
• JavaScript

Firefox configs for security, privacy, usability and performance

• UpdatedSep 12, 2025
• CSS

Interactive view, compare, and more for Firefox user.js (eg arkenfox/user.js) + about:config functions

• UpdatedAug 9, 2021
• HTML

Torturing Firefox with userchrome.js and userchrome.css in response to Mozilla's successive degradation of the browser window.

• UpdatedSep 24, 2025
• JavaScript

Interactive view, compare, and more for Firefox user.js (eg arkenfox/user.js) + about:config functions

• UpdatedJun 10, 2024
• JavaScript

Hide sponsored messages onhttps://web.telegram.org/k

• UpdatedJul 2, 2025
• TypeScript

Dove is a suite of configurations & advanced modifications for Mozilla Thunderbird, designed to put the user first - with a focus on privacy, security, freedom, & usability.

• UpdatedOct 12, 2025
• JavaScript

A custom user.js script to configure Firefox user, privacy and security settings.

• UpdatedSep 1, 2025
• JavaScript

Custom JS and CSS made by hideo54.

• UpdatedSep 22, 2022
• AutoHotkey

🦊 Firefox user.js – based on arkenfox/user.js with additional UI fixes.

• UpdatedNov 1, 2024
• JavaScript

[no longer maintained] a minimalist firefox theme created by a professional green tea drinker

• UpdatedOct 19, 2024
• CSS

Скрипт для проверки аффилиатности товаров на AliExpress

• UpdatedAug 13, 2022
• JavaScript