Unusuable. There are no instructions of any kind. The UI is not any standard kind. Everything is hidden behind some inscrutable icon. All I want is a way to say "block this page", or to add a URL to a block list, but despite the vast multitude of icons and menus leading down endless rabbitholes, there are no options to block this page, or to add a URL to a block list, that I can find. Neither is there any provided blocklist, or info on where to find a good blocklist. This is possibly the worst user interface I've ever seen in nearly 50 years of using computers every day. It's like it was made by ancient Egyptians.

YouTube playback is delayed.

filter lists is not as extensive as brave browser's

When i have this enabled it wont load my searches

marche pas.

It blocks YouTube, videos cannot be played. I had to delete it.

No longer working on Youtube as of February 2026. Every video fails to load and displays:

"This content isn't available, try again later"

Will update my review if this is fixed in the future.

Does NOT work. Youtube shows "this content isn't available, try again later". Disabling uBlock allows me to watch videos. This only happens when I am logged in. If I am not logged in, then I can leave uBlock enabled.

whitelisting a domain from the popup (by clicking on the gray square) doesn't work, it still blocks that domain.
developer, please fix whitelisting domains from the popup.

Yes it blocks ads but YouTube knows you are using it and forces a delay as long or longer than the ad it blocks

It says: 'Installation aborted because the add-on appears to be corrupt.'

Cela fait depuis des mois qu'il ne marche pas bien du tout avec Youbube et impossible de se connecter par eux sur github, erreur pour se connecter, donc impossible de soumettre leurs erreur pas corrigé depuis longtemps!

No longer seems to work on YouTube so is totally pointless until they provide an update.

Ublock na dzień 30.10.2025 nie zawsze działa po włączeniu YouTube wyświetliła mi się reklama banerowa która zniknęła po odświeżeniu, na filmach na YT mających więcej niż 24 godziny i włączoną monetyzację przez długość trwania reklamy jest czarna plansza i komunikat ,, Dlaczego film nie odtwarza się płynnie - Zobacz dlaczego ''. Potrzebne są zmiany które wyeliminują te błędy. Bo naprawdę dzięki temu rozszerzeniu oszczędza się masę czasu które straciło by się na oglądanie reklam.

Doesn't work on youtube anymore...

Suddenly today again ads on Twitch!

As of Sep 6 this add-on prevents any site from loading in my browser.

Extension does not stop autoplay of videos on espn.com. It does not allow me turn off autoplay. It blocks parts of page that I don't want it to block. Uninstalling. And I have Block Audio and Video selected in the Firefox Autoplay setting but no help there either. Frustrating.

It's completely broken. After 30 seconds no data from any website can be loaded and my CPU goes into into overdrive. The second I disable Ublock the temp drops rapidly and everything starts loading again. Tested multiple times. Was great while it lasted but it is unusable in it's current state.

Приводит к зависанию фаерфокса (фризы по 5-10сек)

Sempre più siti capiscono che usi un adblock e li devi disattivare, così sono inutili

The block google sign in prompt is NOT working!!!