is-png

is-png

Check if a Buffer/Uint8Array is a PNG image

Install

$ npm install is-png

Usage

Node.js

import {readChunk} from 'read-chunk';
import isPng from 'is-png';

const buffer = await readChunk('unicorn.png', {length: 8});

isPng(buffer);
//=> true

Browser

import isPng from 'is-png';

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

Similar packages

Other packages similar to is-png

image-type

The image-type package detects the file type of a buffer, supporting various image formats including PNG, JPEG, GIF, and more. It provides broader functionality compared to is-png, which is specific to PNG images.

file-type

The file-type package is a comprehensive utility for detecting the file type of a buffer or stream. It supports a wide range of file formats, including images, videos, documents, and more. It offers more extensive functionality compared to is-png, which is focused solely on PNG images.

is-jpg

The is-jpg package is similar to is-png but is specific to JPEG images. It allows you to check if a given buffer or file is a JPEG image, providing similar functionality but for a different image format.