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Firefox Has Quietly Integrated Brave's Adblock Engine
(itsfoss.com)
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this post was submitted on 24 Apr 2026
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isn't ublock's filtering compiled to webassembly?
seems a bit dangerous though to risk for a browser with so small market share
From my unprofessional glance ar their repository, it uses a little, but not much. Take a look at their code; all or most of the filtering is done in JavaScript, the webassembly appears to be just ~~one~~ two modules. (It's in the "wasm" folder near the top of the list).
(Edit: I was looking at outdated code; the newer version uses more, but IMO pales in comparison to the JavaScript filtering logic)
Waterfox has a much smaller market share and much smaller budget, and was able to clear this with search partners just by promising not to block ads on them by default.
The slow thing usually is the DOM manipulation anyways.