Looks up MIME types by file extension or vice versa.
MIME Types is a quick reference for looking up the content-type of a file by its extension, or finding which extensions map to a given media type. Type an extension like "png" or ".json" to get its MIME type, or enter part of a content-type such as "image" or "application" to list every matching extension. It is handy whenever you need to set a correct Content-Type header, validate uploads, or configure static file serving.
No. The lookup runs entirely in your browser against a built-in table, and nothing you type is uploaded or stored anywhere.
Enter an extension (with or without a leading dot, like "json" or ".json") to get its single MIME type. If your input is not a known extension, it is treated as a substring match against MIME types and returns every extension whose content-type contains it.
The tool covers a curated set of common web, image, audio, video, font, document, and archive formats, including json, html, css, js, png, jpg, svg, mp3, mp4, woff2, wasm, pdf, zip, doc, and xls. It is not an exhaustive list of every registered media type.
No. Input is trimmed and lowercased before lookup, so "PNG", ".Png", and "png" all return the same result.
If the input is neither a known extension nor a substring of any MIME type, the tool reports that no matching MIME type or extension was found.