Is AdBlocker Ultimate Safe? — Extension Safety Profile
Quick verdict: AdBlocker Ultimate 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.
We assess AdBlocker Ultimate from its the Chrome Web Store listing. It's also published on Firefox Add-ons (AMO) (1,054,872 users there).
What this safety grade means
AdBlocker Ultimate 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, AdBlocker Ultimate comes through cleanly. 2,000,000 active users/installs reported on the store. Store rating 4.7/5 from 63,900 user ratings. Last updated on the store 2026-10-26. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open AdBlocker Ultimate'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
AdBlocker Ultimate requests broad permissions—including host access to all websites, the ability to read and modify network requests, inject scripts, and manage cookies—which is standard for ad and content blockers. This scope lets it effectively filter ads and trackers on every page you visit, but it also means the extension can technically observe all your browsing activity.
Like any ad blocker, the main safety consideration is that it operates with extensive access to your data. While many are trustworthy, users should install such tools only from developers with a clear reputation and transparent policies. Manifest V3 and the use of declarativeNetRequest help limit some data handling, but the declared privacy practices rely on the publisher's honesty.
The fact sheet shows a high overall safety score of 91, with perfect Community Reputation (100/100) from a large user base and strong rating, suggesting satisfaction and trust. The weakest area is Publisher & Identity (60/100), meaning the developer's background or corporate transparency may be less established. A cautious user might want to learn more about AdAvoid Ltd before granting such powerful access.
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 AdBlocker Ultimate?
- Publisher AdAvoid Ltd
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, AdBlocker Ultimate 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)
AdBlocker Ultimate FAQ
- Is AdBlocker Ultimate safe?
- AdBlocker Ultimate 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 AdBlocker Ultimate?
- AdBlocker Ultimate is operated by AdAvoid Ltd.
Alternatives we track
Browse all browser extensions we've checked → · Best Ad & Content Blockers extensions