How to make QR Scanner using Laravel & Javascript
Iqbal Syahrul Siddiq
Posted on August 28, 2023
A QR Scanner is a device or software that can read and decode QR codes. QR codes are two-dimensional barcodes that can store a variety of information, such as text, URLs, contact information, and more.
QR code scanners can be used to scan QR codes in a variety of ways. For example, they can be used to:
- Open a website in a web browser
- Add a contact to a phone book
- Pay for goods or services
- Access loyalty programs
- Log in to websites or applications
- Share files
QR code scanners are available in a variety of forms, including:
- Mobile phone apps
- Point-of-sale (POS) devices
- Wearable devices
- Industrial scanners
QR code scanners are a convenient and efficient way to access information and perform tasks. They are becoming increasingly popular as QR codes become more widely used.
Here are some of the benefits of using a QR code scanner:
- Convenient: QR code scanners can be used to scan QR codes quickly and easily.
- Efficient: QR code scanners can save time and effort by eliminating the need to manually enter information.
- Secure: QR codes can be encrypted to protect the information they contain.
- Flexible: QR codes can be used to store a variety of information, making them versatile and adaptable.
If you are looking for a convenient and efficient way to access information and perform tasks, a QR code scanner is a good option to consider.
In this tutorial i will show you how to make QR Scanner web based using Laravel & Javascript, it's easy and simple. We will using Javascript code from JSQRScanner Github (https://github.com/jbialobr/JsQRScanner), and combine with Laravel.
- Install new laravel project (in this tutorial we will using Laravel version 8)
composer create-project laravel/laravel:^8.0 example-app
- Download all javascript files from https://github.com/jbialobr/JsQRScanner (Actually we don't need all folder, we just using JsQRScanner/docs/* . Copy all javascript folder in public folder
- Open resources/views/welcome.blade.php, and modify code like bellow
<!DOCTYPE html>
<html lang="{{ str_replace('_', '-', app()->getLocale()) }}">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Laravel QR Scan Using Webcam</title>
<!-- Fonts -->
<link href="https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700&display=swap" rel="stylesheet">
<!-- This script loads your compiled module. -->
<script type="text/javascript" src="{{ url('JS_Plugin/docs/jsPretty/jsqrscanner.nocache.js') }}"></script>
<!-- Styles -->
<style>
/*! normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */html{line-height:1.15;-webkit-text-size-adjust:100%}body{margin:0}a{background-color:transparent}[hidden]{display:none}html{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji;line-height:1.5}*,:after,:before{box-sizing:border-box;border:0 solid #e2e8f0}a{color:inherit;text-decoration:inherit}svg,video{display:block;vertical-align:middle}video{max-width:100%;height:auto}.bg-white{--bg-opacity:1;background-color:#fff;background-color:rgba(255,255,255,var(--bg-opacity))}.bg-gray-100{--bg-opacity:1;background-color:#f7fafc;background-color:rgba(247,250,252,var(--bg-opacity))}.border-gray-200{--border-opacity:1;border-color:#edf2f7;border-color:rgba(237,242,247,var(--border-opacity))}.border-t{border-top-width:1px}.flex{display:flex}.grid{display:grid}.hidden{display:none}.items-center{align-items:center}.justify-center{justify-content:center}.font-semibold{font-weight:600}.h-5{height:1.25rem}.h-8{height:2rem}.h-16{height:4rem}.text-sm{font-size:.875rem}.text-lg{font-size:1.125rem}.leading-7{line-height:1.75rem}.mx-auto{margin-left:auto;margin-right:auto}.ml-1{margin-left:.25rem}.mt-2{margin-top:.5rem}.mr-2{margin-right:.5rem}.ml-2{margin-left:.5rem}.mt-4{margin-top:1rem}.ml-4{margin-left:1rem}.mt-8{margin-top:2rem}.ml-12{margin-left:3rem}.-mt-px{margin-top:-1px}.max-w-6xl{max-width:72rem}.min-h-screen{min-height:100vh}.overflow-hidden{overflow:hidden}.p-6{padding:1.5rem}.py-4{padding-top:1rem;padding-bottom:1rem}.px-6{padding-left:1.5rem;padding-right:1.5rem}.pt-8{padding-top:2rem}.fixed{position:fixed}.relative{position:relative}.top-0{top:0}.right-0{right:0}.shadow{box-shadow:0 1px 3px 0 rgba(0,0,0,.1),0 1px 2px 0 rgba(0,0,0,.06)}.text-center{text-align:center}.text-gray-200{--text-opacity:1;color:#edf2f7;color:rgba(237,242,247,var(--text-opacity))}.text-gray-300{--text-opacity:1;color:#e2e8f0;color:rgba(226,232,240,var(--text-opacity))}.text-gray-400{--text-opacity:1;color:#cbd5e0;color:rgba(203,213,224,var(--text-opacity))}.text-gray-500{--text-opacity:1;color:#a0aec0;color:rgba(160,174,192,var(--text-opacity))}.text-gray-600{--text-opacity:1;color:#718096;color:rgba(113,128,150,var(--text-opacity))}.text-gray-700{--text-opacity:1;color:#4a5568;color:rgba(74,85,104,var(--text-opacity))}.text-gray-900{--text-opacity:1;color:#1a202c;color:rgba(26,32,44,var(--text-opacity))}.underline{text-decoration:underline}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.w-5{width:1.25rem}.w-8{width:2rem}.w-auto{width:auto}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}@media (min-width:640px){.sm\:rounded-lg{border-radius:.5rem}.sm\:block{display:block}.sm\:items-center{align-items:center}.sm\:justify-start{justify-content:flex-start}.sm\:justify-between{justify-content:space-between}.sm\:h-20{height:5rem}.sm\:ml-0{margin-left:0}.sm\:px-6{padding-left:1.5rem;padding-right:1.5rem}.sm\:pt-0{padding-top:0}.sm\:text-left{text-align:left}.sm\:text-right{text-align:right}}@media (min-width:768px){.md\:border-t-0{border-top-width:0}.md\:border-l{border-left-width:1px}.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:1024px){.lg\:px-8{padding-left:2rem;padding-right:2rem}}@media (prefers-color-scheme:dark){.dark\:bg-gray-800{--bg-opacity:1;background-color:#2d3748;background-color:rgba(45,55,72,var(--bg-opacity))}.dark\:bg-gray-900{--bg-opacity:1;background-color:#1a202c;background-color:rgba(26,32,44,var(--bg-opacity))}.dark\:border-gray-700{--border-opacity:1;border-color:#4a5568;border-color:rgba(74,85,104,var(--border-opacity))}.dark\:text-white{--text-opacity:1;color:#fff;color:rgba(255,255,255,var(--text-opacity))}.dark\:text-gray-400{--text-opacity:1;color:#cbd5e0;color:rgba(203,213,224,var(--text-opacity))}.dark\:text-gray-500{--tw-text-opacity:1;color:#6b7280;color:rgba(107,114,128,var(--tw-text-opacity))}}
</style>
<style>
body {
font-family: 'Nunito', sans-serif;
}
</style>
</head>
<script>
if (location.protocol != 'https:') {
document.getElementById('secure-connection-message').style='display: block';
}
</script>
<body class="antialiased">
<div class="relative flex items-top justify-center min-h-screen bg-gray-100 dark:bg-gray-900 sm:items-center py-4 sm:pt-0">
<div class="max-w-6xl mx-auto sm:px-6 lg:px-8">
<div class="flex justify-center pt-8 sm:justify-start sm:pt-0">
<svg viewBox="0 0 651 192" fill="none" xmlns="http://www.w3.org/2000/svg" class="h-16 w-auto text-gray-700 sm:h-20">
<g clip-path="url(#clip0)" fill="#EF3B2D">
<path d="M248.032 44.676h-16.466v100.23h47.394v-14.748h-30.928V44.676zM337.091 87.202c-2.101-3.341-5.083-5.965-8.949-7.875-3.865-1.909-7.756-2.864-11.669-2.864-5.062 0-9.69.931-13.89 2.792-4.201 1.861-7.804 4.417-10.811 7.661-3.007 3.246-5.347 6.993-7.016 11.239-1.672 4.249-2.506 8.713-2.506 13.389 0 4.774.834 9.26 2.506 13.459 1.669 4.202 4.009 7.925 7.016 11.169 3.007 3.246 6.609 5.799 10.811 7.66 4.199 1.861 8.828 2.792 13.89 2.792 3.913 0 7.804-.955 11.669-2.863 3.866-1.908 6.849-4.533 8.949-7.875v9.021h15.607V78.182h-15.607v9.02zm-1.431 32.503c-.955 2.578-2.291 4.821-4.009 6.73-1.719 1.91-3.795 3.437-6.229 4.582-2.435 1.146-5.133 1.718-8.091 1.718-2.96 0-5.633-.572-8.019-1.718-2.387-1.146-4.438-2.672-6.156-4.582-1.719-1.909-3.032-4.152-3.938-6.73-.909-2.577-1.36-5.298-1.36-8.161 0-2.864.451-5.585 1.36-8.162.905-2.577 2.219-4.819 3.938-6.729 1.718-1.908 3.77-3.437 6.156-4.582 2.386-1.146 5.059-1.718 8.019-1.718 2.958 0 5.656.572 8.091 1.718 2.434 1.146 4.51 2.674 6.229 4.582 1.718 1.91 3.054 4.152 4.009 6.729.953 2.577 1.432 5.298 1.432 8.162-.001 2.863-.479 5.584-1.432 8.161zM463.954 87.202c-2.101-3.341-5.083-5.965-8.949-7.875-3.865-1.909-7.756-2.864-11.669-2.864-5.062 0-9.69.931-13.89 2.792-4.201 1.861-7.804 4.417-10.811 7.661-3.007 3.246-5.347 6.993-7.016 11.239-1.672 4.249-2.506 8.713-2.506 13.389 0 4.774.834 9.26 2.506 13.459 1.669 4.202 4.009 7.925 7.016 11.169 3.007 3.246 6.609 5.799 10.811 7.66 4.199 1.861 8.828 2.792 13.89 2.792 3.913 0 7.804-.955 11.669-2.863 3.866-1.908 6.849-4.533 8.949-7.875v9.021h15.607V78.182h-15.607v9.02zm-1.432 32.503c-.955 2.578-2.291 4.821-4.009 6.73-1.719 1.91-3.795 3.437-6.229 4.582-2.435 1.146-5.133 1.718-8.091 1.718-2.96 0-5.633-.572-8.019-1.718-2.387-1.146-4.438-2.672-6.156-4.582-1.719-1.909-3.032-4.152-3.938-6.73-.909-2.577-1.36-5.298-1.36-8.161 0-2.864.451-5.585 1.36-8.162.905-2.577 2.219-4.819 3.938-6.729 1.718-1.908 3.77-3.437 6.156-4.582 2.386-1.146 5.059-1.718 8.019-1.718 2.958 0 5.656.572 8.091 1.718 2.434 1.146 4.51 2.674 6.229 4.582 1.718 1.91 3.054 4.152 4.009 6.729.953 2.577 1.432 5.298 1.432 8.162 0 2.863-.479 5.584-1.432 8.161zM650.772 44.676h-15.606v100.23h15.606V44.676zM365.013 144.906h15.607V93.538h26.776V78.182h-42.383v66.724zM542.133 78.182l-19.616 51.096-19.616-51.096h-15.808l25.617 66.724h19.614l25.617-66.724h-15.808zM591.98 76.466c-19.112 0-34.239 15.706-34.239 35.079 0 21.416 14.641 35.079 36.239 35.079 12.088 0 19.806-4.622 29.234-14.688l-10.544-8.158c-.006.008-7.958 10.449-19.832 10.449-13.802 0-19.612-11.127-19.612-16.884h51.777c2.72-22.043-11.772-40.877-33.023-40.877zm-18.713 29.28c.12-1.284 1.917-16.884 18.589-16.884 16.671 0 18.697 15.598 18.813 16.884h-37.402zM184.068 43.892c-.024-.088-.073-.165-.104-.25-.058-.157-.108-.316-.191-.46-.056-.097-.137-.176-.203-.265-.087-.117-.161-.242-.265-.345-.085-.086-.194-.148-.29-.223-.109-.085-.206-.182-.327-.252l-.002-.001-.002-.002-35.648-20.524a2.971 2.971 0 00-2.964 0l-35.647 20.522-.002.002-.002.001c-.121.07-.219.167-.327.252-.096.075-.205.138-.29.223-.103.103-.178.228-.265.345-.066.089-.147.169-.203.265-.083.144-.133.304-.191.46-.031.085-.08.162-.104.25-.067.249-.103.51-.103.776v38.979l-29.706 17.103V24.493a3 3 0 00-.103-.776c-.024-.088-.073-.165-.104-.25-.058-.157-.108-.316-.191-.46-.056-.097-.137-.176-.203-.265-.087-.117-.161-.242-.265-.345-.085-.086-.194-.148-.29-.223-.109-.085-.206-.182-.327-.252l-.002-.001-.002-.002L40.098 1.396a2.971 2.971 0 00-2.964 0L1.487 21.919l-.002.002-.002.001c-.121.07-.219.167-.327.252-.096.075-.205.138-.29.223-.103.103-.178.228-.265.345-.066.089-.147.169-.203.265-.083.144-.133.304-.191.46-.031.085-.08.162-.104.25-.067.249-.103.51-.103.776v122.09c0 1.063.568 2.044 1.489 2.575l71.293 41.045c.156.089.324.143.49.202.078.028.15.074.23.095a2.98 2.98 0 001.524 0c.069-.018.132-.059.2-.083.176-.061.354-.119.519-.214l71.293-41.045a2.971 2.971 0 001.489-2.575v-38.979l34.158-19.666a2.971 2.971 0 001.489-2.575V44.666a3.075 3.075 0 00-.106-.774zM74.255 143.167l-29.648-16.779 31.136-17.926.001-.001 34.164-19.669 29.674 17.084-21.772 12.428-43.555 24.863zm68.329-76.259v33.841l-12.475-7.182-17.231-9.92V49.806l12.475 7.182 17.231 9.92zm2.97-39.335l29.693 17.095-29.693 17.095-29.693-17.095 29.693-17.095zM54.06 114.089l-12.475 7.182V46.733l17.231-9.92 12.475-7.182v74.537l-17.231 9.921zM38.614 7.398l29.693 17.095-29.693 17.095L8.921 24.493 38.614 7.398zM5.938 29.632l12.475 7.182 17.231 9.92v79.676l.001.005-.001.006c0 .114.032.221.045.333.017.146.021.294.059.434l.002.007c.032.117.094.222.14.334.051.124.088.255.156.371a.036.036 0 00.004.009c.061.105.149.191.222.288.081.105.149.22.244.314l.008.01c.084.083.19.142.284.215.106.083.202.178.32.247l.013.005.011.008 34.139 19.321v34.175L5.939 144.867V29.632h-.001zm136.646 115.235l-65.352 37.625V148.31l48.399-27.628 16.953-9.677v33.862zm35.646-61.22l-29.706 17.102V66.908l17.231-9.92 12.475-7.182v33.841z"/>
</g>
</svg>
</div>
<div class="mt-8 bg-white dark:bg-gray-800 overflow-hidden shadow sm:rounded-lg">
<div class="grid grid-cols-1 md:grid-cols-2">
<div id="scanner" class="p-6 border-t border-gray-200 dark:border-gray-700 md:border-t-0 md:border-l">
</div>
<div class="p-6 border-t border-gray-200 dark:border-gray-700 md:border-t-0 md:border-l">
<div class="flex items-center">
<svg fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" viewBox="0 0 24 24" class="w-8 h-8 text-gray-500"><path d="M3 9a2 2 0 012-2h.93a2 2 0 001.664-.89l.812-1.22A2 2 0 0110.07 4h3.86a2 2 0 011.664.89l.812 1.22A2 2 0 0018.07 7H19a2 2 0 012 2v9a2 2 0 01-2 2H5a2 2 0 01-2-2V9z"></path><path d="M15 13a3 3 0 11-6 0 3 3 0 016 0z"></path></svg>
<div class="ml-4 text-lg leading-7 font-semibold"><a href="" class="underline text-gray-900 dark:text-white">Laravel QR Scanner Using Webcam</a></div>
</div>
<div class="ml-12">
<div class="mt-2 text-gray-600 dark:text-gray-400 text-sm">
A QR code scanner is a device or software that can read and decode QR codes. QR codes are two-dimensional barcodes that can store a variety of information, such as text, URLs, contact information, and more.
</div>
</div>
<div class="ml-12">
<textarea id="scannedTextMemo" cols="50" class="mt-2 form-control" rows="2" readonly></textarea>
</div>
<div class="ml-12">
<textarea id="scannedTextMemoHist" class="mt-2 form-control" value="" cols="50" rows="10" readonly></textarea>
</div>
</div>
</div>
</div>
<div class="flex justify-center mt-4 sm:items-center sm:justify-between">
<div class="ml-4 text-center text-sm text-gray-500 sm:text-right sm:ml-0">
Laravel v{{ Illuminate\Foundation\Application::VERSION }} (PHP v{{ PHP_VERSION }})
</div>
</div>
</div>
</div>
<script type="text/javascript">
function onQRCodeScanned(scannedText)
{
var scannedTextMemo = document.getElementById("scannedTextMemo");
if(scannedTextMemo)
{
scannedTextMemo.value = scannedText;
}
var scannedTextMemoHist = document.getElementById("scannedTextMemoHist");
if(scannedTextMemoHist)
{
scannedTextMemoHist.value = scannedTextMemoHist.value + '\n' + scannedText;
}
}
function provideVideo()
{
var n = navigator;
if (n.mediaDevices && n.mediaDevices.getUserMedia)
{
return n.mediaDevices.getUserMedia({
video: {
facingMode: "environment"
},
audio: false
});
}
return Promise.reject('Your browser does not support getUserMedia');
}
function provideVideoQQ()
{
return navigator.mediaDevices.enumerateDevices()
.then(function(devices) {
var exCameras = [];
devices.forEach(function(device) {
if (device.kind === 'videoinput') {
exCameras.push(device.deviceId)
}
});
return Promise.resolve(exCameras);
}).then(function(ids){
if(ids.length === 0)
{
return Promise.reject('Could not find a webcam');
}
return navigator.mediaDevices.getUserMedia({
video: {
'optional': [{
'sourceId': ids.length === 1 ? ids[0] : ids[1]//this way QQ browser opens the rear camera
}]
}
});
});
}
//this function will be called when JsQRScanner is ready to use
function JsQRScannerReady()
{
//create a new scanner passing to it a callback function that will be invoked when
//the scanner succesfully scan a QR code
var jbScanner = new JsQRScanner(onQRCodeScanned);
//var jbScanner = new JsQRScanner(onQRCodeScanned, provideVideo);
//reduce the size of analyzed image to increase performance on mobile devices
jbScanner.setSnapImageMaxSize(300);
var scannerParentElement = document.getElementById("scanner");
if(scannerParentElement)
{
//append the jbScanner to an existing DOM element
jbScanner.appendTo(scannerParentElement);
}
}
</script>
</body>
</html>
- Test & run laravel project & and try open http://localhost:8000/ in your browser
php artisan serve
- If you need full example code, please clone from this link : https://gitlab.com/open-for-public/laravel-qr-scanner-using-webcam.git
💖 💪 🙅 🚩
Iqbal Syahrul Siddiq
Posted on August 28, 2023
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