---
title: "Ad Blocking"
description: "BrowserOS supports full ad blocking with uBlock Origin"
---

BrowserOS supports full ad blocking through [uBlock Origin](https://ublockorigin.com/), the most powerful open-source ad blocker available — the full extension, not the watered-down "Lite" version.

## Why BrowserOS?

Chrome [killed support](https://developer.chrome.com/docs/extensions/develop/migrate/mv2-deprecation-timeline) for uBlock Origin by phasing out Manifest V2 extensions. The only option left on Chrome is "uBlock Origin Lite," a significantly weaker version that can't use advanced filtering rules.

**BrowserOS re-enabled full Manifest V2 support**, so you can install and run the original uBlock Origin at full power — the same extension Chrome no longer allows.

<Card title="Install uBlock Origin" icon="shield-check" href="https://chromewebstore.google.com/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm">
  Install the full uBlock Origin extension from the Chrome Web Store. Works on BrowserOS out of the box.
</Card>

## BrowserOS vs Chrome

We ran both browsers through [adblock.turtlecute.org](https://adblock.turtlecute.org/), a test that measures how effectively a browser blocks ads and tracking scripts.

<CardGroup cols={2}>
  <Card title="BrowserOS — 68%">
    <img src="/images/adblock-browseros.png" alt="BrowserOS blocking 68% of ads" />
  </Card>
  <Card title="Chrome — 7%">
    <img src="/images/adblock-chrome.png" alt="Chrome blocking only 7% of ads" />
  </Card>
</CardGroup>

Out of 133 ad-related requests:
- **BrowserOS** blocked 91 (68%)
- **Chrome** blocked 9 (7%)

That's roughly **10x more protection** with zero configuration.

## What This Means

Fewer ads means faster page loads, less bandwidth usage, and significantly reduced tracking. BrowserOS handles this natively so you can focus on browsing.