
uBlock Origin by Raymond Hill
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
You'll need Firefox to use this extension
Extension Metadata
Screenshots






About this extension
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, uBO blocks ads, trackers, coin miners, popups, etc. through the following lists of filters, enabled by default:
- EasyList (ads)
- EasyPrivacy (tracking)
- Peter Lowe’s Ad server list (ads and tracking)
- Online Malicious URL Blocklist
- uBO's own lists
More lists are available for you to select if you wish:
- EasyList Cookie
- Fanboy Annoyances
- AdGuard Annoyances
- Dan Pollock’s hosts file
- 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, uBO blocks ads, trackers, coin miners, popups, etc. through the following lists of filters, enabled by default:
- EasyList (ads)
- EasyPrivacy (tracking)
- Peter Lowe’s Ad server list (ads and tracking)
- Online Malicious URL Blocklist
- uBO's own lists
More lists are available for you to select if you wish:
- EasyList Cookie
- Fanboy Annoyances
- AdGuard Annoyances
- Dan Pollock’s hosts file
- 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.
***
Rate your experience
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.
PermissionsLearn more
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
More information
- Add-on Links
- Version
- 1.46.0
- Size
- 3.07 MB
- Last updated
- a month ago (Dec 22, 2022)
- Related Categories
- License
- GNU General Public License v3.0
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Tags
Add to collection
Release notes for 1.46.0
See complete release notes for 1.46.0.
Fixes
Commits history since last version.
Fixes
- Add
options
stub tonofab
scriptlet - Rewrite logger's "exceptor" feature
- Use Blob URLs to reliably inject scriptlets -- as suggested by @evilpie
- Add :remove-attr() and :remove-class() pseudo selector operators
- Add pseudo-operator :matches-attr()
- Detect invalid usage of combinators in :not() pseudoclass
- Give more time for viewport to be ready (in popup panel) -- related feedback
- Handle potentially invalid CSS selector (in logger)
- Ensure state of more/less in panel reflect locked/disabled sections
- Isolate generic cosmetic filters from specific ones in generated stylesheet
- Do not cname-uncloak same-origin network requests
- Prevent the creation of non-cosmetic extended filters in element picker
- Fix visual of DOM inspector layer in dark theme mode
- Improve extraction of tokens from regexes
- Use placeholders to minimize vertical shifting at page load time
- Bundled filter lists in releases are not timestamped
- Ensure procedural filters are applied at least once
Commits history since last version.
More extensions by Raymond Hill
- There are no ratings yet
- There are no ratings yet
- There are no ratings yet
- There are no ratings yet
- There are no ratings yet
- There are no ratings yet