HTTP Content Types Tools

HTTP content type reference and tools: what the type, subtype and charset parameters control, how JSON, HTML, form-urlencoded and multipart requests differ.

HTTP 内容类型 (HTTP Content Types) is a frequently consulted reference for developers. Keeping the reference and ready-to-use tools on one page cuts the cost of switching back and forth. All tools below run locally, are free, and need no sign-up.

Related Tools

📎MIME Type LookupLook up MIME types by file extension or vice versa for common formats (json, pdf, png). Set correct Content-Type headers and avoid broken browser downloads.
🌍HTTP Status CodesReference for HTTP status codes (1xx-5xx) with meanings, examples and use cases. Debug API responses faster by looking up 404, 503 and every other code.
🔀Data Format ConverterConvert between JSON, YAML, TOML, XML and CSV in one place with a single paste and instant preview for seamless multi-format config and data conversion.