Secure file type validation for .NET applications using magic number detection

File validator that checks by magic bytes and MIME types

Mimetics determines the file type, MIME type, and media type of a given file using magic numbers and content analysis to detect the most likely file type and then maps that to the appropriate MIME and media type.

File type validator for .NET Web projects

Command-line tool to repair your file extensions

Short python script which change the bytes that identify extrensions on files

Simple way to check a file's type by looking at bytes

A magic number / magic byte Go package to read files and discover the format type.