is-bmp

is-bmp

Check if a Buffer/Uint8Array is a BMP image

Used by image-type.

Install

$ npm install --save is-bmp

$ bower install --save is-bmp

$ component install sindresorhus/is-bmp

Usage

Node.js

var readChunk = require('read-chunk'); // npm install read-chunk
var isBmp = require('is-bmp');
var buffer = readChunk.sync('unicorn.bmp', 0, 2);

isBmp(buffer);
//=> true

Browser

var xhr = new XMLHttpRequest();
xhr.open('GET', 'unicorn.bmp');
xhr.responseType = 'arraybuffer';

xhr.onload = function () {
	isBmp(new Uint8Array(this.response));
	//=> true
};

xhr.send();

API

isBmp(buffer)

Accepts a Buffer (Node.js) or Uint8Array.

It only needs the first 2 bytes.

License

MIT © Sindre Sorhus