@khaf/qrcode

Native bindings to create QR-codes in a variety of formats!

API

See the types

PNG

Note: qrcodeImage returns a Uint8ClampedArray!

import { qrcodeImage } from '@khaf/qrcode'
import { writeFileSync } from 'node:fs'

writeFileSync('./qrcode.png', qrcodeImage('text here'))

SVG

import { qrcodeSvg } from '@khaf/qrcode'

const svg = new TextDecoder().decode(qrcodeSvg('text here'))
// do something with svg

Unicode

import { qrcodeUnicode } from '@khaf/qrcode'

console.log(new TextDecoder().decode(qrcodeUnicode('text here')))

Async Generation

To prevent the event loop from being blocked, this package also implements async versions for svg, unicode, and png generation.

import { QrCode } from '@khaf/qrcode'

const qr = new QrCode('https://www.google.com')

await qr.asyncImage() // png

new TextDecoder().decode(await qr.asyncSvg()) // svg

new TextDecoder().decode(await qr.asyncUnicode()) // unicode

Benchmarks

Running "Generate QR codes" suite...
Progress: 100%

  @khaf/qrcode image:
    6 606 ops/s, ±0.91%    | slowest, 52.8% slower

  @khaf/qrcode svg:
    11 969 ops/s, ±0.90%   | 14.48% slower

  @khaf/qrcode unicode:
    13 995 ops/s, ±1.54%   | fastest

Finished 3 cases!
  Fastest: @khaf/qrcode unicode
  Slowest: @khaf/qrcode image

Note: If you only need the raw data, use magic-qr-code instead.