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Chrome is introducing window.ai - which essentially will allow any website to run AI / LLM tasks on YOUR device, via your chrome browser. Basically chrome will add the "Gemini Nano" language model to your browser locally.

Like advertising, I never asked for this, and I don't want this, and I don't want websites to be able to do this.

I make loads of browser extensions (for fun and profit).

So I thought, "why don't I just make an ad-blocker equivalent, an 'AI-block-er'?"

And thus AI Block was born.

You install the extension, it runs automatically whenever a site loads, and programmatically blocks access to the window.ai API by overriding it.

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But also, I don't trust, that this window.ai API will be particularly secure or used in an honest-manner.

I worry it may leak sensitive on-device data to websites, or be used to "call-home" to Google and send juicy advertising data back to Google about me, this time the data will be LLM-verified.

Just note that the install will say

"Can read and change your data on all websites" - this is simply because its a content script with the host_permission "<all_urls>" so it works on all sites (thats a broad permission so it triggers the warning).

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Happy webbing folks. Papillon