The answer
No. The backend should allocate or validate the key within an authorized upload record, binding it to the requesting user and wedding before granting upload permission.
What are presigned upload URLs?
Should a browser choose any R2 object key before requesting a presigned URL?
More FAQs in What are presigned upload URLs?
No. It can be reused while valid, including to replace content at the authorized key. Design short expiration and finalization controls with that behavior in mind.
No. R2 presigned URLs are intended for the S3 API endpoint. Use the supported endpoint for signed operations and design custom-domain delivery separately.
Still have questions?
Browse all our FAQs or reach out to our support team
Want to upskill yourself?
Your learning library
Small steps. Big possibilities.
Find your next course. Build something great.