Is uBlock Origin Lite Safe? — Extension Safety Profile
Quick verdict: uBlock Origin Lite earns a safety grade A, 91.4 out of 100, based on 5 of 5 dimensions.
91.4/100
Grade A · 5 of 5 checks
What we found
Automated safety profile from public signals (the extension's manifest & permissions, store listing, publisher, privacy policy). A full review hasn't been published yet.
What this safety grade means
uBlock Origin Lite earns a safety grade of A (91.4/100), measured across 5 of 5 dimensions. Its strongest area is Community Reputation (100%). The weakest is Publisher & Identity (60%) — what holds its grade back the most.
On the public records we can check, uBlock Origin Lite comes through cleanly. 22,000,000 active users/installs reported on the store. Store rating 4.5/5 from 3,700 user ratings. Last updated on the store 2026-10-27. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open uBlock Origin Lite's own store listing and privacy policy before installing, and weigh it against the other ad & content blockers extensions we track below.
Safety Signals
Based on 5 of 5 safety dimensions
| Dimension | Score | Bar | Source |
|---|---|---|---|
| Publisher & Identity | 60% · 4.8/8 pts 2 of 5 checks verified | Automated signals | |
| Permissions & Access | 90% · 22.5/25 pts 3 of 3 checks verified | Automated signals | |
| Data & Privacy | 100% · 16/16 pts 4 of 5 checks verified | Automated signals | |
| Maintenance & Ownership | 100% · 7.5/7.5 pts 1 of 2 checks verified | Automated signals | |
| Community Reputation | 100% · 10/10 pts 2 of 4 checks verified | Automated signals |
In-depth safety analysis
The permissions this extension requests are typical for a modern content blocker. The declarativeNetRequest API allows it to block or redirect network requests without reading their contents, while scripting and userScripts let it hide page elements or fix broken layouts. Full host access () is necessary to apply filtering rules on every site. Storage permissions hold filter lists, and minor APIs like alarms or offscreen support background tasks. For an ad blocker running under Manifest V3, this permission set is standard and expected.
Ad and content blockers sit between you and every webpage, so it is sensible to be careful about who provides them. Because they can see which sites you visit and modify page content, only install such extensions from publishers you trust. Popular blockers are frequently cloned or imitated by malicious copies, and even legitimate ones can break site functionality. Stick to well-known releases from the original developer and keep the extension updated.
The strongest safety dimension for this extension is Community Reputation (100/100), reflecting long-standing trust and broad user approval. The weakest is Publisher & Identity (60/100), which is not unusual for a project maintained by a respected individual developer rather than a large company. In this case, the publisher’s established name and the huge installed base offset the lower formal identity score, making the extension a widely relied-upon tool.
AI-assisted analysis of the documented signals above (permissions, store data, privacy practices) — explains what they mean and the risks typical for this category. Not a hands-on test.
What the store listing shows
Who's Behind uBlock Origin Lite?
- Publisher Raymond Hill (gorhill)
Public records identify the publisher, but no individual founders or a separate registered company are named — which is what holds the Publisher & Identity score back. Less public information about who operates an extension means less you can verify about their long-term accountability.
How it compares
Among the 12 Ad & Content Blockers extensions we track, uBlock Origin Lite scores higher on safety than 67% of them.
Computed from our own database of assessed Ad & Content Blockers extensions — updated as we track more.
Evidence on File (12)
uBlock Origin Lite FAQ
- Is uBlock Origin Lite safe?
- uBlock Origin Lite earns a safety grade of A (91.4/100) on our evidence-based assessment, based on 5 of 5 safety dimensions we could verify from public records. This is an automated profile built from public records, not a hands-on review.
- Who is behind uBlock Origin Lite?
- uBlock Origin Lite is operated by Raymond Hill (gorhill).
Alternatives we track
Browse all browser extensions we've checked → · Best Ad & Content Blockers extensions