It turns out Google Chrome ships a default, hidden extension that allows code on `*.google.com` access to private APIs, including your current CPU usage
You can test it out by pasting the following into your Chrome DevTools console on any Google page:
chrome.runtime.sendMessage(
"nkeimhogjdpnpccoofpliimaahmaaome",
{ method: "cpu.getInfo" },
(response) => {
console.log(JSON.stringify(response, null, 2));
},
);
More notes here: https://simonwillison.net/2024/Jul/9/hangout_servicesthunkjs/
In my experience you either have to trade one devil for the other with Apple or accept buying hardware from the ad company so you can use GrapheneOS.
There are more options than GrapheneOS with broader device support, such as Calyx or LineageOS.
But if you use Android already, you can start by using F-Droid (or others) to install apps to find FOSS replacements for apps you use.