Detect the file type of a file, stream, or data

Fast, dependency-free Go package to infer binary file types based on the magic numbers header signature

A fast Golang library for media type and file extension detection, based on magic numbers

Tweak your iOS app without recompiling!

Magic number detection for JavaScript

Small, dependency-free, fast Python package to infer binary file types checking the magic numbers signature

PHP Magic Number Detector

File format determination library for Python

Main Package for IO, loading all different kind of files

Magic number detector for Go.

Powerful and versatile MIME sniffing package using pre-compiled glob patterns, magic number signatures, XML document namespaces, and tree magic for mounted volumes, generated from the XDG shared-mime-info database.

The first Python validation package uses type, mime, extension, magic numbers, and size to validate files. ✅

🎩🐇 Toolkit for detecting and verifying file type using magic bytes in pure Golang

Detect a file's mime type using magic numbers.

Small and dependency-free Julia package to infer file and MIME type checking the magic numbers signature.

File Type Checker is a .Net file identification library allowing developers to verify the file's magic numbers/identifying bytes against a whitelist.

Django audio validator that verifies the mime and extension of audio files.

Small and dependency free Nim package to infer file and MIME type checking the magic numbers signature.

little haxe library that detects various formats by parsing header or filename

UNIX "file" command's magic patterns for kdb+ files.