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HTTP Header Builder

Build HTTP header lines from a JSON object of strings or string arrays.

Processing stays in your browser. Does not send a request. Certain headers are managed or restricted by browsers; repeated fields are output on separate lines.

How to use the http header builder

Build HTTP header lines from a JSON object of strings or string arrays. Complete the headers json object fields above, or upload a UTF-8 text file for the first field. Choose Run tool, review the output, then copy or download the result.

Example

Content-Type: application/json is generated from its JSON property.

Good to know

Does not send a request. Certain headers are managed or restricted by browsers; repeated fields are output on separate lines.