uBlock Origin uBlock Origin

Finally, an efficient blocker. Easy on CPU and memory.

Rating: 4.69 (24,951)
+5 new ratings vs 1 day ago
+25 new ratings vs 1 week ago
Users: 10,000,000+
Version: 1.38.6 (Last updated: 2021-10-16)
Size: 2.84M
Click to see
  • Your tabs and browsing activity
  • Your data on all websites
  • Run JavaScript code in the context of web pages
  • See our safety evaluation
IMPORTANT: uBlock Origin is completely unrelated to the site "ublock.org".

uBlock Origin is not an "ad blocker", it's a wide-spectrum content blocker with CPU and memory efficiency as a primary feature.


Out of the box, these lists of filters are loaded and enforced:

- uBlock Origin filter lists
- EasyList (ads)
- EasyPrivacy (tracking)
- Peter Lowe’s Ad server list (ads and tracking)
- Online Malicious URL Blocklist

More lists are available for you to select if you wish:

- Fanboy’s Enhanced Tracking List
- Dan Pollock’s hosts file
- Spam404
- And many others

Additionally, you can point-and-click to block JavaScript locally or globally, create your own global or local rules to override entries from filter lists, and many more advanced features.


Open source with public license (GPLv3)
For users by users.

If ever you really do want to contribute something, think about the people working hard to maintain the filter lists you are using, which were made available to use by all for free.



Project change log:

Contributors @ Github:

Contributors @ Crowdin:
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