Tampermonkey

What is Tampermonkey?

Tampermonkey is a Safari web extension app that helps users customize websites with userscripts. It is designed for people who want to add features to sites they use, automate repetitive web tasks, adjust page layouts, or run community-made scripts in Safari on macOS. The app includes tools to install scripts, enable or disable them per site, edit script code, and keep scripts updated. It is commonly used by power users, hobbyists, and web developers who want more control over how pages look and work without building a full browser extension. Tampermonkey is published by Jan Biniok under the Tampermonkey name and is available for Safari through Apple’s App Store distribution model for Safari web extensions.

Key features

• Install userscripts that add features or change website behavior
• Enable or disable scripts for specific websites
• Edit userscript code inside the app
• Manage multiple scripts from one library
• Update installed scripts when newer versions are available
• Customize when and where scripts run in Safari

Safety overview

Status: Use with caution

Tampermonkey is legitimate software, but it can run custom scripts inside websites you visit. That power is the point of the app, and website access prompts are normal for a Safari userscript manager, but the real safety question is which scripts you install. A poorly written or untrusted script can read page content, alter forms, or change how a site behaves within the pages where you allow it to run. Install scripts only from sources you trust, review what a script is meant to do, and remove scripts you no longer use.

Recommendation: Keep Tampermonkey if you actively use userscripts in Safari or rely on site customizations and automations. If you do not use browser scripts, removing it is reasonable and will stop those scripts from running in Safari.

Related apps

• Userscripts

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