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is-png

2.0.0 • Public • Published

is-png Build Status

Check if a Buffer/Uint8Array is a PNG image

Install

$ npm install is-png

Usage

Node.js
const readChunk = require('read-chunk'); // npm install read-chunk
const isPng = require('is-png');
const buffer = readChunk.sync('unicorn.png', 0, 8);
 
isPng(buffer);
//=> true
Browser
(async () => {
    const response = await fetch('unicorn.png');
    const buffer = await response.arrayBuffer();
 
    isPng(new Uint8Array(buffer));
    //=> true
})();

API

isPng(buffer)

Accepts a Buffer (Node.js) or Uint8Array. Returns a boolean of whether buffer is a PNG image.

buffer

The buffer to check. It only needs the first 8 bytes.

Related

  • file-type - Detect the file type of a Buffer/Uint8Array/ArrayBuffer

License

MIT © Sindre Sorhus

Install

npm i is-png

DownloadsWeekly Downloads

1,170,491

Version

2.0.0

License

MIT

Unpacked Size

3.9 kB

Total Files

5

Last publish

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