Is AdBlocker Ultimate safe?
Most notable: access data on all websites, intercept network requests, read and write cookies.
What it can access (11 permissions)
Read from the extension’s own manifest. These describe what it is technically able to do — not what it does do.
- Access data on all websitescritical
Read and change the content of every site you visit, including banking and email.
- Intercept network requestshigh
Observe every request the browser makes, including URLs.
- Read and write cookieshigh
Read session cookies, which in some cases are enough to access an account without the password.
- Tab informationmedium
See the URL and title of every tab you have open.
- Rule-based request filteringmedium
Block or redirect requests via rules, without seeing request contents.
- Inject scriptsmedium
Run its own code inside pages you visit.
- webNavigationlow
No documented elevated capability.
- Local storagelow
Store its own settings and data locally.
- Unlimited local storagelow
Store data locally without the normal quota.
- Right-click menulow
Add entries to the browser's context menu.
- userScriptslow
No documented elevated capability.
Alternatives
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Track your rating, install count and competitors over time, and get alerted when a rival ships an update or your ranking moves.
Claim this extensionData read from the Chrome Web Store listing on 2026-09-16. Install counts are the store’s own rounded buckets. Permission descriptions are derived from the extension’s published manifest. This page describes capabilities, and is not an accusation of misuse.