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gorhill/uBlock

uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.

▲ 10 hackers recommend 3 strongly JavaScript ★ 69k GPL-3.0 blockerbrowser-extensionchromiumfirefoxjavascriptublock

Recommended between 2025-09-24 and 2026-10-13. Last pushed 2026-11-01.

▲ 10 recommend · ▼ 0 criticisms

What hackers say

“install "uBlock Origin", and configure it to "Medium Mode" [1]”

— DavideNL, 2026-09-06 · strong recommendation · original comment on Hacker News ↗

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> "read the full dpreview article due to ad-induced nausea" lol, made me chuckle. Tip: 1. install "uBlock Origin", and configure it to "Medium Mode" [1] 2. Install "Obsidian Web Clipper" and use the "Reading View" button to read articles [2] Trust me, you'll love it. [1] https://github.com/gorhill/uBlock/wiki/Blocking-mode#medium-mode-details- [2] https://addons.mozilla.org/en-US/firefox/addon/web-clipper-obsidian/

“I blocked RTC connections initiated on the SBI Shinsei banking log in page”

— justusw, 2026-07-27 · strong recommendation · original comment on Hacker News ↗

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Thanks for the reference links. I blocked RTC connections initiated on the SBI Shinsei banking log in page at bk.web.sbishinseibank.co.jp with the following custom uBlock Origin filter: bk.web.sbishinseibank.co.jp##+js(nowebrtc) You can see that it works because typing `new window.RTCPeerConnection()` in the browser console prints this: Document tried to create an RTCPeerConnection: undefined Which comes from uBlock, see https://github.com/gorhill/uBlock/blob/5efb8ee4891c09720011e4b7f88272d9c8ff104c/src/js/resources/scriptlets.js#L933 Edit: I gave a shout-out to your comment on the blog post linked in this submission. Thanks again.

“lol, more garbage I'll never see thanks to uBlock Origin, which everyone should be using at this point.”

— biglyburrito, 2025-12-12 · strong recommendation · original comment on Hacker News ↗

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lol, more garbage I'll never see thanks to uBlock Origin, which everyone should be using at this point. https://github.com/gorhill/uBlock?tab=readme-ov-file#ublock-origin-ubo

“Firefox supports policies for enterprise deployment, the ability to install extensions (like uBO) has been available for a long time:”

— ormax3, 2026-10-13 · original comment on Hacker News ↗

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Firefox supports policies for enterprise deployment, the ability to install extensions (like uBO) has been available for a long time: https://mozilla.github.io/policy-templates/#extensions https://github.com/gorhill/uBlock/wiki/Deploying-uBlock-Origin

“ublock origin _lite_”

— TheDong, 2026-08-25 · original comment on Hacker News ↗

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ublock origin _lite_ https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox I also can't use Safari because I want my tabs and bookmarks to sync between my desktop machine (linux) and my phone (iOS), and Safari is the only major browser which can't do that. Not to mention Safari is just an inferior browser which seems possibly designed to hold back Progressive Web Apps so that everyone has to make app-store apps and tithe a percent of all profits to apple.

“uBlock Origin works best on Firefox”

— commoner, 2026-08-15 · original comment on Hacker News ↗

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Absolutely not. This is exactly why people have a problem with Chromium, which now has some of the same restrictions on extensions as Safari (Manifest V3). - uBlock Origin works best on Firefox: https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox - uBlock Origin Lite FAQ: https://github.com/uBlockOrigin/uBOL-home/wiki/Frequently-asked-questions-(FAQ)

“See https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox for some examples of things Ublock Lite can't do.”

— fsflover, 2026-08-14 · original comment on Hacker News ↗

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It will be "largely fine" until the ad networks start using the methods not blocked by the Lite version. You may not even notice that they start tracking you efficiently. See https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox for some examples of things Ublock Lite can't do. Related discussion: uBlock Origin Lite now available for Safari (apps.apple.com) 1156 points by Jiahang on Aug 5, 2025 | 451 comments https://news.ycombinator.com/item?id=44795825

“uBlock does a lot more than just block ads, is the thing, and that's what they killed with MV3.”

— sensanaty, 2026-08-10 · original comment on Hacker News ↗

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uBlock does a lot more than just block ads, is the thing, and that's what they killed with MV3. https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox

“If you want fuller capability then you want uBlock Origin in Firefox.”

— breve, 2026-04-26 · original comment on Hacker News ↗

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> It most definitely is as well. No. uBlock Origin works best in Firefox: https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox uBlock Origin Lite can't do everything uBlock Origin does: https://github.com/uBlockOrigin/uBOL-home/wiki/Frequently-asked-questions-(FAQ)#filtering-capabilities-which-cant-be-ported-to-mv3 If Lite is working for you then good. If you want fuller capability then you want uBlock Origin in Firefox.

“9 times out of 10 it'll be AdBlock Plus and not uBlock Origin [1].”

— vunderba, 2025-09-24 · original comment on Hacker News ↗

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…w me an article on their laptop while casually trying to shoot down the pop-up ads like they're playing a marketers version of Missile Command was astonishing. And EVEN if they do install a blocker, 9 times out of 10 it'll be AdBlock Plus and not uBlock Origin [1]. You know, the one that allows companies to PAY to have their ads whitelisted. This doesn't even cover browsing on a smartphone which unless you're running Android Firefox which supports browser extensions, you have very few options. [1] Notice I said uBlock Origin and NOT uBlock. https://github.com/gorhill/uBlock

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