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What is HTTP?
Hypertext Transfer Protocol is the request-response protocol of the web defined by RFC 9110. A client sends a method and headers, and the server returns a status and body.
Related tools
Try these DevStackIO tools for HTTP:
HTTP Header ParserParse raw HTTP headers into readable name-value pairs. Use when debugging responses; for URL parts use url-parser. Input: header text ≤10MB. Returns table of headers. 100% client-side.Open tool →HTTP Status CodesLook up HTTP status code meanings and fixes. Use as quick reference; for header debug use http-header-parser. Input: code or search. Returns description. 100% client-side.Open tool →
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Definitions are written in plain language and sourced from MDN Web Docs, W3C specifications, and RFCs. Related tools run 100% in your browser — no data leaves your device.
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