filetype.py

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

This is a Python 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…)
Pluggable: add new custom type matchers
Fast, even processing large files
Only first 261 bytes representing the max file header is required, so you can just pass a list of bytes
Dependency free (just Python code, no C extensions, no libmagic bindings)
Cross-platform file recognition

Installation

pip install filetype

API

See annotated API reference.

Examples

Simple file type checking

import filetype

def main():
    kind = filetype.guess('tests/fixtures/sample.jpg')
    if kind is None:
        print('Cannot guess file type!')
        return

    print('File extension: %s' % kind.extension)
    print('File MIME type: %s' % kind.mime)

if __name__ == '__main__':
    main()

Supported types

Image

dwg - image/vnd.dwg
xcf - image/x-xcf
jpg - image/jpeg
jpx - image/jpx
png - image/png
apng - image/apng
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
heic - image/heic
avif - image/avif
qoi - image/qoi

Video

3gp - video/3gpp
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

aac - audio/aac
mid - audio/midi
mp3 - audio/mpeg
m4a - audio/mp4
ogg - audio/ogg
flac - audio/x-flac
wav - audio/x-wav
amr - audio/amr
aiff - audio/x-aiff

Document

doc - application/msword
docx - application/vnd.openxmlformats-officedocument.wordprocessingml.document
odt - application/vnd.oasis.opendocument.text
xls - application/vnd.ms-excel
xlsx - application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ods - application/vnd.oasis.opendocument.spreadsheet
ppt - application/vnd.ms-powerpoint
pptx - application/vnd.openxmlformats-officedocument.presentationml.presentation
odp - application/vnd.oasis.opendocument.presentation