The answer
No. Client checks can be bypassed. Enforce quotas and verify actual uploads on trusted infrastructure, with an upload design that supports the required limits.
Why should browsers upload files directly to object storage?
Can a browser's file-size check enforce the gallery's storage quota?
More FAQs in Why should browsers upload files directly to object storage?
No. The backend still authorizes the upload, allocates its destination, verifies the result, and maintains gallery metadata. Only the transfer of file bytes bypasses it.
Independent states let users identify which files completed, failed, or still need retrying. They also prevent one interrupted transfer from obscuring successful uploads.
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