Small and dependency free Javascript library to infer file type and MIME type checking the magic numbers signature of a file or buffer.

This is a Javascript port from filetype Go package.

Features

• Simple and friendly API
• Supports a wide range of file types
• Provides file extension and MIME type inference
• File discovery by extension or MIME type
• File discovery by kind (image, video, audio...)
• Only first 261 bytes representing the max file header is required, so you can just [pass a list of bytes]
• Dependency free
• Cross-platform file recognition

Installation

npm install filetypes

API

TODO

Examples

Simple file type checking

const FileTypes = require('filetypes');
//Just Check extension
let extension = FileTypes.guessMineType('Nicki Minaj - Anaconda.mp4');
/**
{ name: 'mp4',
  mine: 'video/mp4',
  extension: 'mp4',
  match: [Function: match] }
*/
//Check extension and Magic_numbers in file;
let extension = FileTypes.guessMineType('../path/to/Nicki Minaj - Anaconda.mp4', true);

//Check if extension is Supported
FileTypes.isMineSupported("mp4")
//true
FileTypes.isMineSupported("xxs")
//false

collective type checking

let { isAudio, isImage, isArchive, isFont, isVideo } = require('filetypes');
isAudio('../path/to/Nicki Minaj - Anaconda.mp4')
//false
isVideo('../path/to/Nicki Minaj - Anaconda.mp4')
//true

Supported types

Image

• jpg - image/jpeg
• png - image/png
• gif - image/gif
• webp - image/webp
• cr2 - image/x-canon-cr2
• tif - image/tiff
• bmp - image/bmp
• jxr - image/vnd.ms-photo
• psd - image/vnd.adobe.photoshop
• ico - image/x-icon

Video

• mp4 - video/mp4
• m4v - video/x-m4v
• mkv - video/x-matroska
• webm - video/webm
• mov - video/quicktime
• avi - video/x-msvideo
• wmv - video/x-ms-wmv
• mpg - video/mpeg
• flv - video/x-flv

Audio

• mid - audio/midi
• mp3 - audio/mpeg
• m4a - audio/m4a
• ogg - audio/ogg
• flac - audio/x-flac
• wav - audio/x-wav
• amr - audio/amr

Archive

• epub - application/epub+zip
• zip - application/zip
• tar - application/x-tar
• rar - application/x-rar-compressed
• gz - application/gzip
• bz2 - application/x-bzip2
• 7z - application/x-7z-compressed
• xz - application/x-xz
• pdf - application/pdf
• exe - application/x-msdownload
• swf - application/x-shockwave-flash
• rtf - application/rtf
• eot - application/octet-stream
• ps - application/postscript
• sqlite - application/x-sqlite3
• nes - application/x-nintendo-nes-rom
• crx - application/x-google-chrome-extension
• cab - application/vnd.ms-cab-compressed
• deb - application/x-deb
• ar - application/x-unix-archive
• Z - application/x-compress
• lz - application/x-lzip

Font

• woff - application/font-woff
• woff2 - application/font-woff
• ttf - application/font-sfnt
• otf - application/font-sfnt

License

MIT - Geoff Mureithi Lots of ideas borrowed Tomas Aparicio