uBlock Origin Lite

A permission-less content blocker. Blocks ads, trackers, miners, and more immediately upon installation.

uBlock Origin Lite: The Lightest MV3-based Content Blocker

uBlock Origin Lite is a permission-less MV3-based content blocker designed for Firefox. Built on the same ruleset as uBlock Origin, it blocks ads, trackers, miners and other unwanted content. The add-on only becomes active when interacting with the popup panel or option pages, which minimizes CPU/memory usage. It doesn’t require broad permissions to run, but permissions can be explicitly granted on a per-site basis for a robust filtering experience.
Download

Add-on stats

Users: 6,252
Rating: 4.76
(59)
Version: 2023.8.25.959 (Last updated: 2023-08-25)
Creation date: 2023-08-11
Weekly download count: 826
Firefox on Android: No
Risk impact: Very low risk impact
Risk likelihood:
High risk likelihood
Manifest version: 3
Permissions:
  • activeTab
  • declarativeNetRequest
  • scripting
  • storage
Size: 7.91M

Other platforms

uBlock Origin Lite (v2024.12.15.1269)
4.48 (475) 1,000,000
Not available on Android
uBlock Origin Lite (v2024.12.15.1269)
4.90 (40) 138,583
Want to check extension ranking and stats more quickly for other Firefox add-ons? Install Chrome-Stats extension to view Firefox-Stats data as you browse the Firefox Browser Add-ons.

Add-on summary

Analyze keywords

uBO Lite (uBOL) is a permission-less MV3-based content blocker.

The default ruleset corresponds to uBlock Origin's default filterset:

  • uBlock Origin's built-in filter lists
  • EasyList
  • EasyPrivacy
  • Peter Lowe’s Ad and tracking server list

You can add more rulesets by visiting the options page -- click the Cogs icon in the popup panel.

uBOL is entirely declarative, meaning there is no need for a permanent uBOL process for the filtering to occur, and CSS/JS injection-based content filtering is performed reliably by the browser itself rather than by the extension. This means that uBOL itself does not consume CPU/memory resources while content blocking is ongoing -- uBOL's service worker process is required only when you interact with the popup panel or the option pages.

uBOL does not require broad "read and modify data" permission at install time, hence its limited capabilities out of the box compared to uBlock Origin or other content blockers requiring broad "read and modify data" permissions at install time.

See more

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Good performance equivalent to browsers without any extensions.
  • Simple and easy to use.
  • Works flawlessly with Firefox for Android.
  • Minimal impact on browser performance compared to other ad blockers.
Cons
  • Limited functionalities compared to uBlock Origin (standard).
  • Uses Manifest v3, which weakens filtering capabilities.
  • Not recommended for use outside of Chromium-based browsers.
Most mentioned
  • Performance is good.
  • Manifest v3 is a drawback.
  • Simplicity of the extension.
User reviews
by ekaggata, 2024-09-01
by ARStKi4537, 2024-09-01
by ekaggata, 2024-09-01
View all user reviews

Add-on safety

Risk impact

uBlock Origin Lite does not require any sensitive permissions.

Risk likelihood

uBlock Origin Lite may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Upgrade to see risk analysis details