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How do presigned URLs enable private R2 uploads and downloads?

Is a presigned URL limited to the browser that requested it?

The answer

Not inherently. Possession of the URL grants the signed operation during its validity.

More FAQs in How do presigned URLs enable private R2 uploads and downloads?

The trusted backend should derive or validate it after checking the user’s permissions.

No. Verify the actual stored object before finalizing the application record.

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