Manifest V2 Add-on
- By:
- Jan Biniok
- Daily users:
- 696,577 -4,678
- Rating:
- 4.70 (5,150)
9 new ratings
- Version:
- 5.3.3 Last updated: 2024-12-20
- Version code:
- 5861448
- Creation date:
- 2016-02-01
- Risk:
- Very high risk impact Low risk likelihood
- Permissions:
- alarms
- notifications
- tabs
- idle
- webNavigation
- webRequest
- webRequestBlocking
- unlimitedStorage
- storage
- contextMenus
- alarms
- Size:
- 1.58MB
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Updated:
- a day ago
Ranking
# 21 ▲ 2
Other platforms
User reviews
Pros
- Allows customization of websites through userscripts
- Has a robust built-in script editor with syntax highlighting and debugging
- Enables enhancement of web browsing experience by adding new features or blocking unwanted content
- Reliable and performs consistently across browsers
- Supported by a large and active community providing ready-made scripts
Cons
- Installation issues reported (possibly corrupted files)
Recent reviews
by zh*****, 2025-06-22
by Mi*****, 2025-06-22
good
by Fi*****, 2025-06-21
Extension safety
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.
Tampermonkey 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.
- Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
- High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
- High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
- High ****** ******* *** ********* ********* ******** ***** *** ** ********** ****** * ******** ******* *****
- Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
- Medium ****** ********** ** ******** ********** *** ********* ******* ******** ****** ******** ****** ********
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 Browser Add-ons, 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.
Tampermonkey has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- Low This extension was updated more than 6 months ago. Older versions are more likely to be stable and safe.
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** **** **** ****** ******* ********** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details
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