https://github.com/LinusU/node-lodepng

LodePNG Node.js bindings
https://github.com/LinusU/node-lodepng

Last synced: 16 days ago
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LodePNG Node.js bindings

• Host: GitHub
• URL: https://github.com/LinusU/node-lodepng
• Owner: LinusU
• Created: 2015-08-30T20:00:15.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2024-09-11T15:21:07.000Z (2 months ago)
• Last Synced: 2024-10-20T00:48:49.005Z (25 days ago)
• Language: C
• Size: 225 KB
• Stars: 4
• Watchers: 3
• Forks: 5
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

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README

        
# LodePNG Node.js bindings

Bindings for LodePNG which decodes and encodes PNG images.

## Installation

```sh

npm install --save lodepng

```

## Usage

```javascript

const fs = require('fs')

const png = require('lodepng')

/** Decoding **/

const src = fs.readFileSync('test.png')

png.decode(src).then((res) => {

  console.log(`Image size: ${res.width}x${res.height}`)

  // res.data is a Buffer with RGBA data

})

/** Encoding **/

const data = fs.readFileSync('test.raw')

png.encode({ width: 16, height: 16, data }).then((res) => {

  // res is a Buffer with PNG data

})

```

## API

### `png.decode(source) => Promise`

Decode PNG data to raw RGBA buffer.

### `png.encode(source) => Promise`

Encode raw RGBA buffer to PNG data.