png

Convert between PNG and ImageData

install

npm install @rgba-image/png

usage

fromPng: ( pngBuffer: Uint8Array, options?: ParserOptions ) => ImageData
toPng: ( imageData: ImageData, options?: PNGOptions ) => Uint8Array

Convert an ImageData instance to PNG:

const { toPng } = require( '@rgba-image/png' )
const fs = require( 'fs' )

// create imageData here

const buffer = toPng( imageData )

fs.writeFileSync( 'out.png', buffer )

Convert a PNG to ImageData:

const { fromPng } = require( '@rgba-image/png' )
const fs = require( 'fs' )

const png = fs.readFileSync( 'in.png' )
const imageData = fromPng( png )

options

Uses pngjs for encoding/decoding

fromPng optionally takes a second argument, ParserOptions which is passed through to pngjs

toPng optionally takes PNGOptions

License

MIT License

Copyright (c) 2021 Nik Coughlin

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.