An open source userscript manager.

Violentmonkey provides userscripts support for browsers.


  • Powerful
    • Customize web pages.
    • Automate your work.
  • Data on the cloud
    • Sync to Dropbox, OneDrive, Google Drive, or a WebDAV service.
    • Sync between different browsers.
  • User-friendly
    • Keep simple, no need to make choices.
    • Communicate with external editors.

Note: This extension does not contain any ads and does not modify web pages automatically. Any changes and modifications on the sites are done by installed scripts. Therefore, please install only scripts that you trust.


Violentmonkey is built with web extension APIs, thus supports many browsers.

View all versions (including Beta) here.


You are absolutely welcome to contribute to this project by:

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