+1

+1

Status Edge:
https://developer.microsoft.com/en-us/microsoft-edge/platform/status/quotamanagementapi/

It was implemented for a moment in Chrome but removed again in favour of the new API: https://storage.spec.whatwg.org/
Firefox is said to have it implemented, too.
Chrome status: https://www.chromestatus.com/features/5630353511284736

Original Quota Management API is available at https://caniuse.com/#feat=mdn-api_storagequota though support info is limited to will leave this open.

My comment from #3246 (probably a dupe):

Previously tracked in MDN browser compat data but removed in mdn/browser-compat-data#9459 due to a lack of implementations.

The Quota Management API spec has been unmaintained since 2018, and the MDN link now redirects to: https://developer.mozilla.org/en-US/docs/Web/API/StorageManager

StorageManager is defined in the WHATWG Storage Standard: https://storage.spec.whatwg.org/#storagemanager

And the StorageManager API is covered by MDN browser compat data: https://caniuse.com/mdn-api_storagemanager

(via mdn/browser-compat-data#1441, mdn/browser-compat-data#2272)