Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Violentmonkey

Violentmonkey by Gerald, tophf

Userscript support for browsers, open source.

Available on Firefox for Android™Available on Firefox for Android™
4.7 (762 reviews)4.7 (762 reviews)
135,659 Users135,659 Users
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
Violentmonkey provides userscripts support for browsers. It works on browsers with WebExtensions support. It supports most scripts for Greasemonkey and Tampermonkey.
Features:
- Update automatically according to the meta data.
- Scripts will be executed in order as shown in the list.
- GM functions are supported.
- Importing from and exporting to ZIP files.
- Cloud synchronization with Dropbox, OneDrive, Google Drive, and any WebDAV server.
- Open source!
- A frequently updated beta version (click the xpi file inside Assets and confirm).
Rated 4.7 by 762 reviewers
Sign in to rate this extension
There are no ratings yet

Star rating saved

5
659
4
56
3
11
2
6
1
30
Read all 762 reviews
Permissions and data

Required permissions:

  • Input data to the clipboard
  • Display notifications to you
  • Access browser tabs
  • Access your data for all websites
Learn more
More information
Add-on Links
  • Homepage
  • Support site
Version
2.35.0
Size
659.01 KB
Last updated
22 days ago (Feb 24, 2026)
Related Categories
  • Web Development
License
MIT License
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla’s homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version. Android is a trademark of Google LLC.