# uBlock-LLC/uBlock

uBlock: a fast, lightweight, and lean blocker for Chrome, Firefox, and Safari.

Repository: https://github.com/uBlock-LLC/uBlock
Canonical: https://ross.abutalabs.com/products/ublock-llc-ublock
Homepage: https://ublock.org/
Language: JavaScript
License: GPL-3.0
License Family: copyleft
Topics: ublock, blocker, chrome, safari, safari-extension, extension, adblock, firefox, javascript
Archived: true
Last push: 2022-09-08T21:07:14+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4455, "days_push": 1455, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8246, forks 430 (observed 2026-08-28T04:10:19.832929+00:00)

## What it is
uBlock is a fast, lightweight browser extension that blocks ads, pop-ups, and trackers in Chrome, Firefox, Safari, Edge, and Opera. It emphasizes low memory and CPU overhead while using bundled filter lists for content blocking.

## Use cases
- block ads in my browser
- stop trackers from following me across websites
- make web pages load faster by removing ads
- block pop-ups and intrusive content
- reduce browser memory usage from ad scripts
- set-and-forget ad blocker for Chrome and Firefox

## When to choose
- you want a lean, memory-efficient ad blocker for Chrome, Firefox, Safari, or Opera
- you prefer a simple install-and-forget blocker with bundled filter lists
- you need a macOS app variant of a browser blocker

## When to avoid
- you want the actively developed uBlock Origin instead of this LLC-maintained fork
- you need a system-wide or network-level ad blocker rather than a browser extension
- you require Manifest V3 support in this specific repository, whose GitHub releases stopped in 2022

## Facets
- artifact type: plugin
- maturity: maintenance
- function: security, privacy, developer-tools
- domain: browser-extensions, privacy, web-development
- platform: browser, browser-extension, cross-platform
- tags: adblock, content-blocker, tracker-blocking, filter-lists, chrome-extension, firefox-extension, safari-extension, macos

## Member repositories
- uBlock-LLC/uBlock (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:19.832929+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:29:28.614189+00:00, confidence not recorded.
  - readme: https://github.com/uBlock-LLC/uBlock (fetched 2026-08-28T04:10:19.832929+00:00, sha 0f354523d8c2)
  - homepage: https://ublock.org/ (fetched 2026-08-29T08:28:17.822417+00:00, sha 24205558d94f)
  - site_page: https://ublock.org/en/releases (fetched 2026-08-29T08:28:17.824802+00:00, sha 3d42a2a33377)
- Data as of 2026-08-30T08:39:29.467469+00:00.