MIME Type Lookup

Find the content type for any file extension, or go the other way and find every extension that uses a given MIME string. A curated database of 220+ IANA-registered and vendor types — web essentials, images, audio, video, fonts, Office, OpenDocument, 3D, message, and programming source. Paste a full Content-Type value to validate its syntax and see a canonical form. Pure client-side, nothing leaves your browser.

File extension

Type an extension without the leading dot. The result updates as you type.

MIME / Content-Type

Type or paste any type/subtype. Parameters (e.g. ; charset=utf-8) are accepted but ignored for the lookup.

MIME string to validate

Per RFC 6838: type/subtype, optional +suffix, then zero or more ; name=value parameters.

Type anything. Match runs across MIME, extensions, description, and category.

Sort Show deprecated types —

MIME	Extensions	Category	Description

About the database

This tool ships a curated subset of the IANA Media Types registry plus widely-used vendor types (Microsoft Office, OpenDocument, Apple iWork, Adobe, 3D / glTF, Google Drive, and a long tail of common formats). The 220+ entries were chosen for the types a typical developer reaches for in daily work — if a type is missing, the validator below still tells you whether your Content-Type header is well-formed. The deprecated flag is set for types that are no longer recommended (e.g. application/javascript superseded by text/javascript in RFC 9239).

The validator follows the RFC 6838 / RFC 7230 token grammar: type/subtype[+suffix][;name=value]…. Parameter names are lowercased to canonical form; quoted-string values are unescaped; everything else passes through.