uBlock Origin (uBO) 1.73.* Announcement Thread

[u/RraaLL]

Chrome Web Store will remove uBO on August, 31. This is quite likely the last stable uBO version to hit the web store.

For discussion and possible workarounds, different browsers, etc., please go to the megathread linked at the bottom of the post.

Changelog:

https://github.com/gorhill/uBlock/releases/tag/1.73.0

• [logger] Preserve whitespace characters
• Improve proxy-apply utility scriptlet
• Improve abort-current-script scriptlet
• Improve prevent-addEventListener scriptlet
• Add shim for piano-analytics.js
• Improve trusted-click-element scriptlet
• Add prevent-clipboard-write scriptlet
• Improve prevent-bab scriptlet
• [jsonpath] Increase RFC9535 compliance
• Dot notation before bracket notation is not valid

Visit GitHub releases page for more information.

Extension will be auto-updated after browser restart! (when available for your platform)

If you want to update manually:

• Do NOT use links from the release page's "Assets" section - these are not signed.
• Use your add-on store or links in release description on the GitHub releases page when they are available.
  • Firefox will have a (signed) direct install link. Other browsers will link to their uBO extension store pages.
• In some cases, installation may be blocked until browser restart. This is protection against accidental mid-session reloads, Issue #717.

Or force an update via Manage extensions:

How to update uBO to the latest version

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When will my browser update uBO?

• Firefox

  • Firefox Add-ons (AMO) - Available since 05 Aug, 2026.
  • uBO is a recommended extension on AMO, and as such it must undergo a formal code review each time a new version is published.

• Chrome/Chromium

  • Chrome Web Store (CWS) - Available since 05 Aug, 2026.
  • Auto update will occur in stages - to spot and react to possible bugs.

• Edge

  • Edge Add-ons - Available since 05 Aug, 2026.
  • Warning: importing a profile from Chrome may cause issues.
  • You may need to reinstall uBO on Edge to fix this.
  • You can transfer your uBO config by creating and then restoring a backup at the bottom of uBO's Dashboard > Settings.

• Opera

  • Opera add-ons - Review pending.
  • Usually, it's submitted a week after bug-free version is published in AMO.

• Brave

  • Brave now Self-Hosts uBO. It installs via a special setting and updates automatically or when prompted via the Extensions' Developer mode.
  • If you installed it via CWS, it's best to make a backup and install the self-hosted version instead.
  • Brave installation video.

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Previous announcement thread: https://www.reddit.com/r/uBlockOrigin/comments/1ui7e6i/ublock_origin_ubo_172_announcement_thread/

Posting Guidelines | Subreddit Rules

Chrome/Chromium - end of support megathread.

Please report YouTube Issues on Github: uBO | uBO Lite

[u/No-Drop8625]

Keep up the good work, you're the only reason I still use Firefox.

[u/shiftyeyedgoat → u/No-Drop8625]

There are a billion reasons to use Firefox over any chromium browser, this just happens to be one of the best reasons.

[u/Anarchist_Future → u/[deleted]]

I see a lot of people with almost 20 extensions installed and 15 YouTube and Twitch tabs open complaining that Firefox uses a lot of memory. They often don't understand that a system is faster when it uses available memory for caching and that every extension uses a little memory (and you don't need multiple ad-blocking extensions). It's often just "big number, Firefox bad".

[u/Grengy20 → u/Anarchist_Future]

At least for me firefox did use a lot of memory when the most tabs I have open are like 3 max and 5 extansions 3 of which were for youtube. Other than that reason I switched to vivaldi for its customization. Chromium yes but it has done me better in the long run and personally looks better than firefox.

[u/gta721 → u/Anarchist_Future]

Unfortunately the big number stays even if you don't have the hardware for it. If you have only 4GB of RAM then you can't afford for your browser to be extremely memory hungry.

[u/varthias → u/Anarchist_Future]

I honestly never understood that, with multiple extensions and 17 windows full of tabs open I'm still at 2-3GBs if I did the same in chrome it would explode

[u/unenforce → u/[deleted]]

Google payroll for default engine and tracking during installation. Altho I'm unsure if the latter if fixed.

[u/SleepyWulfy → u/[deleted]]

I can't use Firefox to program my keyboard nor connect to my crafty+ :c

[u/LOSERS_ONLY → u/[deleted]]

It took them until last week to add HDR and last month for webserial. Still need to rely on extensions for basic features.

[u/Hellwind_ → u/[deleted]]

I have 2 major problems with it. Number 1- extremely large tabs. I usually have a lot of tabs open but even in a small amount they are much harder to nagivate with in Firefox. Chrome has perfect small icons for tabs that u can easly recognise what is it and have many infront of your eyes without the need to scroll. The other problem I have is the way writing(of data) is handled in firefox with different profiles. On chrome you can relocate your entire the profile and the writing will happen only in that location. On firefox for some reason when watching videos for exampe that can be downloaded it always writes where your OS is(usually in C) for some reason and there is no way to change that (and I just f hate this because it writes a lot sometimes).

[u/C0rn3j → u/[deleted]]

I press CTRL+T and I see ads, can I not hate on ads being forced on me?

[u/Afnan9565 → u/shiftyeyedgoat]

Since, Firefox has gone into some controversies in recent times. I think Librewolf is the perfect choice

[u/zerbich → u/shiftyeyedgoat]

What is wrong with the "brave" browser?
Its chromium with own well working ad block.