Response
Content-Disposition
Indicates whether the response should be displayed inline or downloaded as a file attachment.
Syntax
Content-Disposition: inline | attachment; filename="<filename>"Example
Content-Disposition: attachment; filename="report-2026-03.pdf"Description
The Content-Disposition header controls how the browser handles a response. With inline, the browser displays the content. With attachment, the browser triggers a file download, optionally using the provided filename.
It is also used in multipart form data to describe form fields. For security, always sanitise the filename to prevent path traversal attacks.
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