Re: [csswg-drafts] [css-env][css-values] UAs inconsistent in how OS font settings affect the default font-size `medium` (#10674)

> In my investigation of the major browsers, I couldn't find any other examples where OS font size or accessibility settings influenced the size of a font rendered on a web page. Therefore, I don't see how that fingerprinting surface is currently exposed.
> 
> Am I missing something? 😅

Chrome on Android exposes indirectly exposes OS font size through its text autosizer[1]. Google search page takes advantage of that as mentioned in https://github.com/w3c/csswg-drafts/issues/10674#issuecomment-2588793912

[1] Chrome has a version of [this](https://developer.mozilla.org/en-US/docs/Web/CSS/text-size-adjust#:~:text=many%20mobile%20browsers%20apply%20a%20text%20inflation%20algorithm%20to%20enlarge%20the%20text%20to%20make%20it%20more%20readable) that takes into account the OS-level font preference.

-- 
GitHub Notification of comment by davidsgrogan
Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/10674#issuecomment-2735061170 using your GitHub account


-- 
Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config

Received on Wednesday, 19 March 2025 01:12:50 UTC