Violentmonkey

Name: Violentmonkey
Rating: 4.7227 (779 reviews)
Author: Gerald

By: Gerald

Userscript support for browsers, open source.

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Features & Capabilities

Violentmonkey is an open-source userscript manager for browsers. It supports Greasemonkey and Tampermonkey scripts, automatically updates them based on their metadata, and preserves the execution order. It also provides GM functions for advanced users and easy import/export via ZIP.

Additionally, Violentmonkey offers cloud synchronization with Dropbox, OneDrive, Google Drive, and WebDAV so your scripts follow you across devices. Open-source with an actively maintained beta version to test updates and new features.

User Growth & Download Statistics

Add-on Programming Developer Tools Open Source

By:

Gerald

Daily users:

148,991 2.47K

Rating:

4.72

(779)

Version:

2.41.0 Last updated: 2026-06-08

Version code:

6286140

Creation date:

2017-03-21

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

647.81KB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-15

Compare stats and ranking:

Ranking

# 122 ▲ 2

Other rankings

#18 in Web Development

#14 in money keyword 27

#34 in keyword keyword 56 ▲ 1

#34 in support keyword 14 ▼ 1

#64 in source keyword 20 ▼ 2

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Other platforms

Violentmonkey (v2.41.0)

951,293 4.50

(107)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Gerald

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/violentmonkey/

Website:

https://github.com/violentmonkey/violentmonkey

Permission Change History

2023-10-27: Version 2.15.0 → 2.16.0

Add Permissions: contextMenus

2023-07-28: Version 2.14.0 → 2.15.0

Remove Permissions: declarativeContent

User Reviews

Violentmonkey is widely praised as an open-source, privacy-conscious, and Firefox-optimized userscript manager that is easy to use and lightweight. Users appreciate its script management and customization capabilities. However, the most consistently mentioned drawback is sync reliability, including instances of script data being deleted or corrupted during syncing. Overall, it offers strong value for Firefox users who want control over their scripts, but users should back up data due to sync risks.

Pros

Open-source with a clear privacy stance
Easy to install, manage and run user scripts
Lightweight and fast – no bloat or slowdowns
Strong Firefox optimization and overall browser performance
Good for personalizing and enhancing websites through scripts

Cons

Sync reliability issues: script data can be lost or corrupted during synchronization

Recent reviews

by Al*****, 2026-06-06

by Fi*****, 2026-05-23

by Fi*****, 2026-05-15

View all user reviews ›

Is Violentmonkey Safe?

Risk impact

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, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Violentmonkey requires a lot of sensitive permissions. 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

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. 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 Firefox add-on.

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

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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