uBlock Origin

uBlock Origin is a free and open-source, cross-platform browser extension for content-filtering and blocking. it is a wide-spectrum blocker — which happens to be able to function as a mere “ad blocker”. The default behavior of uBlock Origin when newly installed is to block ads, trackers and malware sites. It comes as browser extension for various browsers Firefox, Chromium, Thunderbird.

uBlock Origin browser extension

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
  • 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.


Download this Firefox browser ad-on here, Chrome users can get it from Chrome web store here. More editions are available on Github.

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