
uBlock Origin by Raymond Hill
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
Extension Metadata






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:
- EasyList (ads)
- Peter Lowe’s Ad server list (ads and tracking)
- EasyPrivacy (tracking)
- Malware domains
More lists are available for you to select if you wish:
- Fanboy’s Enhanced Tracking List
- Dan Pollock’s hosts file
- MVPS HOSTS
- 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.
***
Free.
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.
***
***
Out of the box, these lists of filters are loaded and enforced:
- EasyList (ads)
- Peter Lowe’s Ad server list (ads and tracking)
- EasyPrivacy (tracking)
- Malware domains
More lists are available for you to select if you wish:
- Fanboy’s Enhanced Tracking List
- Dan Pollock’s hosts file
- MVPS HOSTS
- 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.
***
Free.
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.
***
Report this add-on for abuse
If you think this add-on violates Mozilla's add-on policies or has security or privacy issues, please report these issues to Mozilla using this form.
Please don't use this form to report bugs or request add-on features; this report will be sent to Mozilla and not to the add-on developer.
This add-on needs to:
- Read and modify privacy settings
- Access browser tabs
- Store unlimited amount of client-side data
- Access browser activity during navigation
- Access your data for all websites
- Add-on Links
- Version
- 1.34.0
- Size
- 2.63 MB
- Last updated
- a month ago (Mar 10, 2021)
- License
- GNU General Public License, version 3.0
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
Complete release notes.
Closed as fixed:
Notable commits without en entry in the issue tracker
Commits history since 1.33.2.
Closed as fixed:
- Picker glitch with elements with special characters in their tag name
- Expose CNAME-uncloaking as a Privacy option in the Settings pane
- Impossible to add explicit exception for implicit strict blocking
- Invalid network filters suggested in element picker
- Use +/- in the popup to indicate whether 3-p frames were blocked
Notable commits without en entry in the issue tracker
- Fix no-scripting switch not working for SVG-based documents
- Upgrade CodeMirror to 5.59.2
- Fix 'adsbygoogle' neutered script
- Inject procedural cosmetic filterer's code only when needed
Commits history since 1.33.2.
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