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- # is-jpg [![Build Status](https://travis-ci.org/sindresorhus/is-jpg.svg?branch=master)](https://travis-ci.org/sindresorhus/is-jpg)
-
- > Check if a Buffer/Uint8Array is a [JPEG](https://en.wikipedia.org/wiki/JPEG) image
-
-
- ## Install
-
- ```
- $ npm install is-jpg
- ```
-
-
- ## Usage
-
- ##### Node.js
-
- ```js
- const readChunk = require('read-chunk');
- const isJpg = require('is-jpg');
- const buffer = readChunk.sync('unicorn.jpg', 0, 3);
-
- isJpg(buffer);
- //=> true
- ```
-
- ##### Browser
-
- ```js
- const xhr = new XMLHttpRequest();
- xhr.open('GET', 'unicorn.jpg');
- xhr.responseType = 'arraybuffer';
-
- xhr.onload = () => {
- isJpg(new Uint8Array(this.response));
- //=> true
- };
-
- xhr.send();
- ```
-
-
- ## API
-
- ### isJpg(buffer)
-
- Accepts a Buffer (Node.js) or Uint8Array.
-
- It only needs the first 3 bytes.
-
-
- ## Related
-
- - [file-type](https://github.com/sindresorhus/file-type) - Detect the file type of a Buffer/Uint8Array
-
-
- ## License
-
- MIT © [Sindre Sorhus](https://sindresorhus.com)
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