Identifies file types based on magic bytes, patterns, and other unique file attributes.

Lightning-fast file type detection using magic bytes (file signatures) with a focus on stream processing and minimal memory usage

Detect Filetype by bytes

Detect file type from 'Magic' Bytes

ReadImage tool — validates magic bytes and returns Anthropic base64 image content blocks

n8n node for detecting file types using magic bytes analysis

Block read tool from reading binary files (PDF, archives, executables) by detecting magic bytes

Asset upload validation (MIME allowlist + magic bytes) and an in-memory reference uploader for DisNote Document.

No description provided.

A lightweight library to determine a file's type based on its magic bytes.

Modify strings, generate sourcemaps

Minimalist yEnc and dynEncode encoder and decoder library for browser and NodeJS

Some useful utilities I often need

Utility to parse a string bytes to bytes and vice-versa

Various operations on Uint8Array data

A compiled-away, type-safe, readable RegExp alternative

CLI & API for secure file upload validation: check file type (magic bytes, MIME), detect Office macros/malware, audit logging, parallel scanning, and CI/CD integration.

magic-string with AST shortcut.

Uses a known set of file signatures 'magic bytes' to identify files

A collection of utilities for working with JSON objects, including diffing, conflict resolution, bundling and more.