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this post was submitted on 10 Dec 2024
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The only way to really stop this is to disable JavaScript?
Yes and no. There are still plenty of things that get tracked regardless of JavaScript, and disabling JavaScript is it's own mark they can track.
Do Not Track is one such request, but screen size, viewport size, language, timezone/region, whether you block ads or not, browser/engine version, and many more are all things that do get tracked without the need for JS.
All have legitimate reasons, but can also be abused by being tracked server-side.
The cover your tracks page on eff.org has some pretty good explanations for most things.
Fun fact, the reason the TOR browser launches in windowed mode is so that this viewport size tracking is less of a marker.
I just have a hard time wrapping my head around why certain things have to be reported back. Like screen size - you can request a desktop site, so why not just let the browser request the page, the browser gets the information and displays how it needs to - why bother reporting that information back to wherever? Why not just have the browser not send back that info, or send back randomized/fake info?
Websites automatically adapting to viewport size is pretty handy, not having to select whether you want the mobile site or not each and every time you load the page is generally considered a good thing.
You may also want the website to adapt to smaller or wider windows, unless you want every website to become one where you manually zoom in and pan around.
Similar things go for language and timezone.
There are various ways to spoof various settings about your browser, through add-ins or otherwise.