yet another filetype checker

kinda similar to filetype.py but:

• at first reads 8 bytes and reads more if needed
• • python will use optimal read chunk size automatically anyway
• everything in single file
• only output file extension (maybe i will add MIME type output too, idk)
• only works with files (not with bytearray and other stuff)

supported formats

• flv
• jxr
• tif
• psd
• psb
• dds
• woff
• woff2
• ico
• cur
• swf
• 7z (only non splitted archive)
• pdf
• jpg
• gif
• jif
• png
• apng
• qoi
• bmp
• mov
• avif
• heic
• mp4
• m4v
• m4a
• 3gp
• 3g2
• epub
• ora
• aac
• mp3
• flac
• mkv
• webm
• webp
• avi
• wav
• ani
• ts
• mpg
• torrent
• jxl
• html
• blank (fake extension, file filled with zeros/null bytes)

how to use

as standalone app:

.\filetype_checker.py sample.png
apng

as library:

import os.path
import filetype_checker

file_path = "sample.png"

if (os.path.isfile(file_path)):
    # if extension was not found it will return None
    file_extension = filetype_checker.guess_ext(file_path)
    
    if (file_extension):
        print("File extension:", file_extension)
    else:
        print("Cant guess file extension")
else:
    print("Given path is not a file")