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MIME Lookup
Look up MIME types by file extension or find extensions for a MIME type
About MIME Lookup
MIME Lookup lets you look up mime types by file extension or find extensions for a mime type.
Category: API.
Frequently asked questions
What is a MIME type?
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A label that identifies the format of a file or data stream, used in HTTP Content-Type headers and file systems. Format: type/subtype — for example, text/html, image/png, application/json.
Why does Content-Type matter in APIs?
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It tells the client how to parse the response body. Sending JSON with Content-Type: text/plain may cause clients to treat it as a string instead of parsing it as JSON.
What is the difference between application/octet-stream and other types?
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application/octet-stream is the generic binary type — it signals arbitrary binary data with no specific format. Browsers typically trigger a download for this type rather than displaying the content.