Tampermonkey

Tampermonkey is the world's most popular userscript manager.

Tampermonkey: The Most Popular Userscript Manager

Tampermonkey is an exceptional userscript manager with over 10 million weekly users. Available for several browsers, it provides an easy way to manage scripts, including features like overview of running scripts, built-in editor, ZIP-based import and export, automatic update checks, synchronization, and Greasemonkey compatibility. A BETA version with frequent updates is also available.

Add-on stats

Daily users: 680,987
-24,484
Version: 5.3.3 (Last updated: 2024-12-20)
Creation date: 2016-02-01
Weekly download count: 17,644
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood:
Manifest version: 2
Permissions:
  • alarms
  • notifications
  • tabs
  • idle
  • webNavigation
  • webRequest
  • webRequestBlocking
  • unlimitedStorage
  • storage
  • contextMenus
  • See more
Size: 1.65M

Other platforms

Tampermonkey (v5.3.3)
4.73 (72,037) 11,000,000
Not available on Android
Not available on Edge
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Add-on summary

Tampermonkey is the most popular userscript manager, with over 10 million weekly users. It's available for Chrome, Microsoft Edge, Safari, Opera Next and Firefox.

Tampermonkey makes it very easy to manage your userscripts and provides features like a clear overview over the running scripts, a built-in editor, ZIP-based import and export (Google Drive, Dropbox, OneDrive), automatic update checks and also browser and cloud storage based synchronization. And finally it's compatible to Greasemonkey up to version 3.x with experimental 4.x support.

Note: If you want to install the more often updated BETA version, then you can get it from here: https://tampermonkey.net/?browser=firefox

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Easy to use for beginners
  • Allows usage of helpful scripts
  • Good performance overall
Cons
    Most mentioned
    • Ease of use for new users
    • Functionality of helpful scripts
    User reviews
    by Bhargav Ram, 2025-02-07


    The forbidden one... The wizard cannot be stopped at this point.
    by josh L., 2025-02-07
    View all user reviews

    Add-on safety

    Risk impact

    Tampermonkey requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

    Risk impact analysis details
    • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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    Risk likelihood

    Tampermonkey has earned a fairly good reputation and likely can be trusted.

    Risk likelihood analysis details
    • Medium This extension was updated in the past 3 months. New updates may not be stable or safe.
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    Upgrade to see full risk analysis details