demo · v148

Quota Inspector

Click Get estimate to call navigator.storage.estimate() and see what the browser reports for this origin. Open this page in a regular Chrome tab and an incognito one — in Chrome 148+ the numbers should look indistinguishable.

quota—

usage—

free—

usage / quota—

the code

const { quota, usage } = await navigator.storage.estimate();
const freeBytes = quota - usage;

// In Chrome 148+, `quota` is the same number you'd get in incognito.
// Before this change, incognito's quota was much smaller and fingerprintable.

implementation reference

Need the exact API surface, compatibility boundaries, errors, lifecycle, and source links? Read the matching gendn reference ↗

the code

see also

implementation reference