Created
September 20, 2024 13:42
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QR code generator.
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8"> | |
<title>QR Code Generator</title> | |
<style> | |
html { | |
display: grid; | |
place-content: center; | |
color-scheme: light dark; | |
} | |
body { | |
display: grid; | |
gap: 1em; | |
} | |
svg { | |
aspect-ratio: 1; | |
shape-rendering: crispEdges; | |
} | |
img { | |
image-rendering: pixelated; | |
} | |
svg, img, canvas { | |
border: 16px solid white; | |
} | |
</style> | |
<script type="importmap"> | |
{ | |
"imports": { | |
"qrcode": "https://cdn.jsdelivr.net/gh/flipeador/secure-password-generator/extension/lib/qrcode.js" | |
} | |
} | |
</script> | |
</head> | |
<body> | |
<h1>QR Code Generator</h1> | |
<svg></svg> | |
<img></img> | |
<canvas></canvas> | |
<label> | |
Text: | |
<input/> | |
</label> | |
<label> | |
Error correction level: | |
<select> | |
<option value="L" selected>Low (7%)</option> | |
<option value="M">Medium (15%)</option> | |
<option value="Q">Quartile (25%)</option> | |
<option value="H">High (30%)</option> | |
</select> | |
</label> | |
<label> | |
Element type: | |
<select> | |
<option value="svg" selected>SVG</option> | |
<option value="img">IMG</option> | |
<option value="canvas">Canvas</option> | |
</select> | |
</label> | |
<label> | |
Size: | |
<input type="number" value="12"/> | |
</label> | |
<script type="module"> | |
import * as QRC from 'qrcode'; | |
const $svg = document.querySelector('svg'); | |
const $img = document.querySelector('img'); | |
const $canvas = document.querySelector('canvas'); | |
const $input = document.querySelectorAll('input'); | |
const $select = document.querySelectorAll('select'); | |
function update() { | |
const size = parseInt($input[1].value); | |
const $target = document.querySelector($select[1].value); | |
for (const $element of [$svg, $img, $canvas]) | |
$element.style.display = 'none'; | |
$target.style.display = 'block'; | |
const count = QRC.draw( | |
$target === $img ? $canvas : $target, | |
$input[0].value, | |
{ size, level: $select[0].value } | |
); | |
if ($target === $svg) | |
$svg.style.width = `${size * count}px`; | |
else if ($target === $img) | |
$img.src = $canvas.toDataURL(); | |
} | |
for (const $element of [...$input, ...$select]) | |
$element.addEventListener('input', () => { | |
clearTimeout(update.timer); | |
update.timer = setTimeout(() => { | |
document.startViewTransition ? | |
document.startViewTransition(update) : | |
update(); | |
}, 500); | |
}); | |
update(); | |
</script> | |
</body> | |
</html> |
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QR Code Generator
Preview
https://cdn.gisthostfor.me/flipeador-gUOZXFUe6H-qrcode-generator.html
QR Code
https://github.com/flipeador/secure-password-generator/blob/v1.0/extension/lib/qrcode.js