The world's most popular userscript manager

Tampermonkey promo image

Tampermonkey is a very popular Chrome extension by tampermonkey.net. It has 10,000,000+ weekly active users and an average rating of 4.73. Tampermonkey is similar to Violentmonkey and Bilibili Helper: Bilibili.com Auxiliary. The latest version is 4.18.1 and was updated 13 days ago. Tampermonkey is available in English and 26 other languages. Within Chrome Web Store, its overall ranking is #6.

Stats date:
Install link: Chrome Web Store
Users: 10,000,000+
Version: 4.18.1 (Last updated: 2022-11-15)
Creation date: 2020-06-02
Manifest version: 2
  • notifications
  • unlimitedStorage
  • tabs
  • idle
  • webNavigation
  • webRequest
  • webRequestBlocking
  • storage
  • contextMenus
  • chrome://favicon/
  • See more
Featured: Yes
Size: 1.48M
Email: Click to see
Analyze keywords
Tampermonkey is one of the most popular browser extensions with over 10 million users.

Tampermonkey is used to run so-called userscripts (sometimes also called Greasemonkey scripts) on websites.
Userscripts are small computer programs that change the layout of a page, add or remove new functionality and content, or automate actions.

### Features ###

 - Easily manage and edit your userscripts
 - Activate and deactivate your scripts with 2 clicks
 - Script synchronization via Chrome Sync and cloud storage (Google Drive, Dropbox, OneDrive, Yandex.Disk and WebDAV)
 - Backup and restore via zip file and/or cloud storage
 - Automatic updates

You can find a complete overview in the FAQ or by simply installing this extension. ;)
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Risk impact

Tampermonkey requires a lot of risky permissions and is not safe to use. Avoid installing this extension unless you absolutely trust this publisher.

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

Tampermonkey has earned a good reputation and can be trusted.

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Chrome extension, especially ones with higher risk impact and/or higher risk likelihood.

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User reviews
Oh those you tube ads are beyond annoying. I am glad this gives the content-creator the revenue still, yet skips the ads automatically. It is working well for me. Thank you
by Inventia Design Inventia Design, 2022-11-27

by Wybie Chen Wybie Chen, 2022-11-26

Very good!
by 江文 江文, 2022-11-26
View all user reviews
Promo images
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Tampermonkey small promo image
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Similar extensions

Here are some Chrome extensions that are similar to Tampermonkey:

Violentmonkey Violentmonkey
User count: 733,501
Rating: 543
An open source userscript manager that supports a lot of browsers
Bilibili Helper: Bilibili.com Auxiliary Bilibili Helper: Bilibili.com Auxiliary
User count: 299,235
Rating: 3,591
An extension for Bilibili that provides convenient features/shortcuts
网盘助手 网盘助手
Publisher: 哩呵
User count: 63,808
Rating: 62

The manifest file declares the requirements and permissions that a Chrome extension will have access to. By reviewing the manifest, you may be able to determine if a Chrome extension is over-reaching (for example, if an extension is overriding your new tab page, or search provider, or requesting access to your web activities without any good reason).

  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "content_security_policy": "script-src 'self'; object-src 'self';",
  "minimum_chrome_version": "",
  "offline_enabled": true,
  "content_scripts": [
      "js": [
      "matches": [