Reviews of uMatrix

By: Raymond Hill

List of user reviews and ratings for uMatrix

Total ratings

4.79 (Rating count: 761)

Receive review notifications

Get notified when new reviews are posted so you can respond quickly.

See reviews on Firefox Add-ons Store

View and respond to reviews directly on the store page.

Visit

Review summary

uMatrix is a powerful, user-driven blocker with granular control and good integration with uBlock Origin. It’s praised for design and effectiveness in blocking ads, trackers, and scripts. However, development seems slowed or paused, with calls for resurrection. Common downsides include resetting per-page allowances, unreliable persistence, CPU usage after updates, and the absence of a dark mode. Despite stability and maintenance concerns, it remains a highly capable privacy tool for those who want precise control over website behavior.

Pros

Powerful, granular blocking that removes ads, trackers, and unnecessary scripts.
Fine-grained per-site control over what to block or allow.
Strong synergy with uBlock Origin, enhancing overall site privacy.
Brilliant design and usability that makes complex blocking manageable.
Still highly useful even if development has slowed or paused.

Cons

Development appears halted or abandoned; many users hope for resurrection.
Resets approved requests on pages and doesn't reliably save per-page allowances.
Recent updates can cause high CPU usage, impacting performance.
No built-in night mode/dark theme; users want a dark UI.
Some users experience site breakage or instability due to blocking decisions.

Upgrade to see all 242 reviews

User Reviews

Recent rating average: 4.80

All time rating average: 4.79

Upgrade to see all 242 reviews

2% (5)

Date	Author	Comment
2026-05-20	Me*****

2026-05-17	Fi*****	A black interface would look pretty nice. :)
A black interface would look pretty nice. :)
2026-04-23	co*****	I've been using uMatrix for many years.
I've been using uMatrix for many years.