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PYTHON

qr detector

    import cv2
    decoder = cv2.QRCodeDetector()
    data, points, _ = decoder.detectAndDecode(img) # size 250 * 250 np.array
    qr_code = data
    print('Decoded data: ' + data)
    if points is not None:
        print('Decoded data: ' + data)
    
        points = points[0]
        for i in range(len(points)):
            pt1 = [int(val) for val in points[i]]
            pt2 = [int(val) for val in points[(i + 1) % 4]]
            cv2.line(img, pt1, pt2, color=(255, 0, 0), thickness=3)
    
        cv2.imshow('Detected QR code', img)
Comment

QR CODE

let scanner = new Instascan.Scanner({
  video: document.getElementById('preview'),
  mirror: false
});

Instascan.Camera.getCameras().then(function(cameras) {
  if (cameras.length > 0) {
    scanner.start(cameras[0]);
  } else {
    console.error('No cameras found.');
    alert('No cameras found.');
  }
}).catch(function(e) {
  console.error(e);
  alert(e);
});


$(function() {
  const re = /(d+-d+)s+(.*)/;
  scanner.addListener('scan', function(content) {
    console.log(content);
    if (!re.test(content)) {
      console.log("malformed strings")
      return;
    }
    const [_, id, name] = content.match(re);
    $(".idnum").val(id);
    $(".idname").val(name.trim());
  });
})
Comment

qr code sccanner

<!DOCTYPE html>
<html lang="en">
<head>
<title>QR-Code Generator</title>
<style>
  * {
      margin: 0px; 
      padding: 0px;
      font-family: monospace, Arial, sans-serif;
    }
  h1 {
      text-align: center; 
      text-shadow: 2px 2px 0px rgba(255,255,255,.7), 5px 7px 0px rgba(0, 0, 0, 0.1);  font-size:50px; margin-top:40px; color:#fff; 
    }
    input[type=text] {
        width: 90%;
        padding: 12px 20px;
        margin: 8px 26px;
        display: inline-block;
        border: 1px solid #ccc;
        box-sizing: border-box;
        font-size:16px;
    }
    button {
        background-color: #4CAF50;
        color: white;
        padding: 14px 20px;
        margin: 8px 26px;
        border: none;
        cursor: pointer;
        width: 90%;
        font-size:20px;
    }
    button:hover {
        opacity: 0.8;
    }
</style>
<!--Jquery 3.2.1-->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
</head>
<body background="../background1.png">
<h1>QR-Code Generator</h1>
<div id="form-wrapper" style="width:46%; float:left; border:5px solid rgba(255,255,255,0.6); margin-top:20px; padding:10px">
    <form id="generator">     
        <label for="codeSize" style="font-size:20px; margin-right:20px; color:#fff;">Select QR Size:</label>
        <select id="codeSize" name="codeSize" style="width:260px; height:40px; ">
            <option value="75">Mini</option>
            <option value="155">Small</option>
            <option value="186">Medium</option>
            <option value="248" selected="selected">Large</option>
            <option value="300">XL</option>
            <option value="450">XXL</option>
        </select>
        <input type="text" onclick="myFunction()" id="codeData" name="codeData" size="50" placeholder="Enter a url or text" style="margin-top:20px" autocomplete="off"/ >
        <br>
        <button id="generate">generate</button>
    </form>
    <div id="alert" style="height:20px; text-align:center; margin:10px auto"></div>
</div>

  <div style="float:right;">
   <div id="image" style="margin:auto">Image will show here</div>
   <div id="link" style="margin-top:10px; text-align:center"></div>
  </div>
  
  <div id="code" style="float:left; width:100%; height:20px; text-align:center; margin-top:10px"></div>
<script>
function myFunction() {
     document.getElementById("alert").innerHTML = "";
  }
$("#generate").on("click", function () {
var data = $("#codeData").val();
var size = $("#codeSize").val();
if(data == "") {
    $("#alert").append("<p style='color:#fff;font-size:20px'>Please Enter A Url Or Text</p>"); // If Input Is Blank
    return false;
} else {
    if( $("#image").is(':empty')) {
    
    //QR Code Image
      $("#image").append("<img src='http://chart.apis.google.com/chart?cht=qr&chl=" + data + "&chs=" + size + "' alt='qr' />");
    
    //This Provide An Image Download Link
      $("#link").append("<a style='color:#fff;' href='http://chart.apis.google.com/chart?cht=qr&chl=" + data + "&chs=" + size + "'>Download QR Code</a>");
    
    //This Provide the Image Link Path In Text
      $("#code").append("<p style='color:#fff;'><strong>Image Link:</strong> http://chart.apis.google.com/chart?cht=qr&chl=" + data + "&chs=" + size + "</p>");
      return false;
} else {
      $("#image").html("");
      $("#link").html("");
      $("#code").html("");
    
      //QR Code Image
      $("#image").append("<img src='http://chart.apis.google.com/chart?cht=qr&chl=" + data + "&chs=" + size + "' alt='qr' />");
    
    //This Provide An Image Download Link
      $("#link").append("<a style='color:#fff;' href='http://chart.apis.google.com/chart?cht=qr&chl=" + data + "&chs=" + size + "'>Download QR Code</a>");
    
    //This Provide the Image Link Path In Text
      $("#code").append("<p style='color:#fff;'><strong>Image Link:</strong> http://chart.apis.google.com/chart?cht=qr&chl=" + data + "&chs=" + size + "</p>");
      return false;
    }
  }
});
</script>
</body>
</html>
Comment

QR code

<img src="data:image/png;base64, {{ base64_encode(QrCode::format('png')->size(100)->generate('Make me into an QrCode!')) }} ">
Comment

qr code generator online

<!DOCTYPE html>

<html lang="en" dir="ltr">
  <head>
    <link rel="shortcut icon" href="QR-CODE.png" type="image/x-icon">
    <meta charset="utf-8">  
    <title>QR Code Generator | Clever Shivanshu</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
        /* Import Google Font - Poppins */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body{
  display: flex;
  padding: 0 10px;
  min-height: 100vh;
  align-items: center;
  background: #EFEBFA;
  justify-content: center;
}
.wrapper{
  height: 265px;
  max-width: 410px;
  background: #fff;
  border-radius: 7px;
  padding: 20px 25px 0;
  transition: height 0.2s ease;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.wrapper.active{
  height: 530px;
}
header h1{
  font-size: 21px;
  font-weight: 500;
}
header p{
  margin-top: 5px;
  color: #575757;
  font-size: 16px;
}
.wrapper .form{
  margin: 20px 0 25px;
}
.form :where(input, button){
  width: 100%;
  height: 55px;
  border: none;
  outline: none;
  border-radius: 5px;
  transition: 0.1s ease;
}
.form input{
  font-size: 18px;
  padding: 0 17px;
  border: 1px solid #999;
}
.form input:focus{
  box-shadow: 0 3px 6px rgba(0,0,0,0.13);
}
.form input::placeholder{
  color: #999;
}
.form button{
  color: #fff;
  cursor: pointer;
  margin-top: 20px;
  font-size: 17px;
  background: linear-gradient(135deg, #481CB6 0%, #2D5CFE 100%);
}
.qr-code{
  opacity: 0;
  display: flex;
  padding: 33px 0;
  border-radius: 5px;
  align-items: center;
  pointer-events: none;
  justify-content: center;
  border: 1px solid #ccc;
}
.wrapper.active .qr-code{
  opacity: 1;
  pointer-events: auto;
  transition: opacity 0.5s 0.05s ease;
}
.qr-code img{
  width: 170px;
}

@media (max-width: 430px){
  .wrapper{
    height: 255px;
    padding: 16px 20px;
  }
  .wrapper.active{
    height: 510px;
  }
  header p{
    color: #696969;
  }
  .form :where(input, button){
    height: 52px;
  }
  .qr-code img{
    width: 160px;
  }  
}

   </style>
  </head>
  <body>
    <div class="wrapper">
      <header>
        <h1>QR Code Generator</h1>
        <p>Paste a url or enter text to create QR code</p>
      </header>
      <div class="form">
        <input type="text" spellcheck="false" placeholder="Enter text or url">
        <button>Generate QR Code</button>
      </div>
      <div class="qr-code">
        <img src="" alt="qr-code">
      </div>
    </div>

    <script>
    const wrapper = document.querySelector(".wrapper"),
        qrInput = wrapper.querySelector(".form input"),
        generateBtn = wrapper.querySelector(".form button"),
        qrImg = wrapper.querySelector(".qr-code img");
        let preValue;
        
        generateBtn.addEventListener("click", () => {
            let qrValue = qrInput.value.trim();
            if(!qrValue || preValue === qrValue) return;
            preValue = qrValue;
            generateBtn.innerText = "Generating QR Code...";
            qrImg.src = `https://api.qrserver.com/v1/create-qr-code/?size=200x200&data=${qrValue}`;
            qrImg.addEventListener("load", () => {
                wrapper.classList.add("active");
                generateBtn.innerText = "Generate QR Code";
            });
        });
        
        qrInput.addEventListener("keyup", () => {
            if(!qrInput.value.trim()) {
                wrapper.classList.remove("active");
                preValue = "";
            }
        });
        </script>

  </body>
</html>
Comment

QR CODE

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script src="https://rawgit.com/schmich/instascan-builds/master/instascan.min.js"></script>
<label id="label">Account ID </label>
<input type="text" name="accId" required="" class="idnum" style="width: 108px;margin-right: 15px;" value="">
<br/>
<label id="label">Customer Name </label>
<br/>
<input type="text" readonly="" name="name" class="idname" required="" value="">
Comment
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