buffer-file-signature

🔨 So far it only detects popular image/audio/application types, new types will be added as time goes by and/or we have help.

This package is inspired by file-type and uses the file signature as the basis for determining its type.

why choose me?

• zero dependency
• detects quickly and synchronously

Install

Node.js

npm i buffer-file-signature
# or
yarn add buffer-file-signature

Usage

Detects by base64 ( only so far )

const file = BufferFileSignature.fromBase64('4AAQSkZJRgA...')

file.extension()
/*
example output: {
    ext: 'jpg',
    mime: 'image/jpeg',
    types: ['jpg', 'jpeg', 'jfif']
}
*/

file.size()
/*
example output: 512000 // bytes
*/

Help method for formatting size

const file = BufferFileSignature.formatSize(512000)
/*
example output: 500 KB
*/