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Set dl on any CDN transform URL to send Content-Disposition: attachment instead of displaying the image inline.

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Parameters

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Examples

Custom filename:
Derived filename (from stored file name + output format):
Combine with any transform — resize, format=auto, bgRemove, presets, and signed URLs all work the same way. The attachment header is applied to the final encoded bytes after the pipeline runs. See Format & delivery for negotiation and encoding options.
Last modified on June 10, 2026