The short version
AdBlock Pro collects nothing. We have no servers, no analytics, no accounts, and we never see your data.
What the extension stores
All data lives in your browser profile via chrome.storage:
- your settings (theme, toggles, filter-list choices),
- your rules (custom filters, custom CSS, whitelist, element-picker selections),
- blocking statistics (counters per day and per site, kept at most 90 days),
- cached filter-list text and compiled rules.
If you enable Sync settings, Chrome's built-in profile sync mirrors the settings/rules slice across your own devices through your Google account - that is a Chrome feature; the data still never touches any server of ours (we do not have any).
Network traffic
The extension makes exactly one kind of network request: downloading filter lists (EasyList, EasyPrivacy, Peter Lowe's list, Fanboy lists, plus any list URLs you add yourself) from their public sources, on the schedule you choose. These requests carry no identifiers beyond what any HTTP fetch includes and are sent with credentials: 'omit'.
Site favicons in the UI are served by Chrome's local _favicon cache - no external favicon service is contacted.
What we never do
- No telemetry, usage analytics or crash reporting
- No fingerprinting
- No selling, sharing or transmitting of browsing data - we technically cannot, as nothing is ever sent to us
- No remote code: all executable code ships in the extension package
Permissions, explained
| Permission | Why |
|---|---|
declarativeNetRequest (+Feedback) | Block requests; count what was blocked for your statistics |
storage, unlimitedStorage | Keep settings, rules and cached filter lists locally |
host_permissions: <all_urls> | Hide ad elements and run the element picker on any site you visit |
alarms | Scheduled filter updates and statistics upkeep |
contextMenus | "Block element" / "Pause on this site" in the right-click menu |
sidePanel | The dashboard side panel |
favicon | Show site icons in the popup from Chrome's local cache |
notifications (optional) | Only if you enable it: a notice when a filter update fails |
Data deletion
Remove the extension, or use Settings → Backup & data → Reset extension, and everything is gone.
Contact
Questions: use the Support tab on the extension's Chrome Web Store page.