A small library for detecting the type of a file based on header signature (also known as magic number).

A library for detecting file types.

python file signature identifier - Use this to identify files from their headers

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

Use 'magic' to guess file types

File validator that checks by magic bytes and MIME types

Advanced File Fingerprinting

Identify a file via MIME type and file signature detection.

Curated reference of file magic bytes for file type identification and forensics.

Currently a PNG file inspector, capable of detecting faults and corrupted blocks

Evade file content checks by prepending magic bytes to any file

A simple library for validating & checking file types. Written in V

What is a magic byte anyway? This tutorial will get you comfortable with the concept.

Python tool to create polyglot files for magic byte bypass by merging with valid file formats (JPEG, PNG, PDF, DOCX, MP4, etc.)

Mundane Elements is a system for checking the filetype of a given file using Magic Bytes.

File fingerprinting and signature detection based on known file header formats. A primary use-case is file upload validation in ASP.NET Core applications.

FileInspectorX is a library for content type detection (magic bytes + heuristics) and lightweight analysis (containers, PDFs, PE triage, text/script cues) across .NET 8, .NET Standard 2.0 and .NET Framework 4.7.2. A thin PowerShell module provides pipeline‑friendly cmdlets with reusable typed views.

Magika GUI — Portable AI File Inspector. The ultimate deep-learning powered file identification tool — no installation required. License: MIT Python 3.10+ Powered by Magika Platform Identify any file's true type using Google's deep learning model — even if the extension is changed, missing, or deliberately obfuscated.

A lightweight Python-based file signature analyzer that detects true file types using magic bytes, designed for DFIR investigations, malware triage, and reverse engineering.

FUFP (File Upload Fuzz Pack) is a curated collection of files designed to test, fuzz, and analyze file upload mechanisms in web applications.