Lightning-fast file type detection using magic bytes (file signatures) with a focus on stream processing and minimal memory usage
The ultimate javascript content-type utility.
A comprehensive library for mime-type mapping
Media Type Database
Detect Filetype by bytes
Single-attachment plaintext export for noy-db — extracts one blob from BlobSet as native MIME bytes. Gated by the RFC #249 `canExportPlaintext` capability bit; writes an audit-ledger entry on every call. Part of the @noy-db/as-* portable-artefact family (
Utility to parse a string bytes to bytes and vice-versa
Detect the archive type of a Buffer/Uint8Array
Parses, serializes, and manipulates MIME types, according to the WHATWG MIME Sniffing Standard
Encode and decode quoted printable and base64 strings
A tiny (2.8kB) and fast utility for getting a MIME type from an extension or filename
Various operations on Uint8Array data
Email parser for Node.js and browser environments
TypeScript definitions for mime-types
Compressible Content-Type / mime checking
mime-types rewrite in TypeScript with ESM and CommonJS targets
A simple function to check whether a mimetype matches the specified mimetype (with wildcard support)
TypeScript definitions for mime-db
An iteration of the Node.js core streams with a series of improvements
Standard mime types for JavaScript
Split email messages into an object stream
Middleware to manipulate response MIME types in lws
TypeScript definitions for @hapi/mimos
Sniff the encoding from a HTML byte stream
Detect MIME types from file extensions, filenames, and binary content using magic byte signatures. Includes 200+ extension mappings, 30+ magic byte patterns, custom registration, charset detection, Accept header parsing, and content negotiation.
Tool to parse the first bytes of a file and compare it to a list of known mime types.
Monkeypatches File and IO to include a '''magic_number_type''' method which returns a symbol, and a '''mime_type''' method which returns a string, representing the mime type guessed.
MimeTyper is a comprehensive, pure Ruby MIME type detection library that uses magic bytes and file extensions to accurately identify file types. Built for reliability and simplicity.
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