Creating Your Own QR Code Generator: Free Source Code Included
Quick Response (QR) codes have become an integral part of our lives. From sharing contact information to directing users to websites, QR codes offer a versatile and efficient way to convey information. Have you ever wondered how these QR codes are generated? Well, you’re in luck!
In this blog post, we’ll dive into the world of QR code generation and provide you with free source code to create your very own QR code generator tool.
Understanding QR Codes and Their Importance
QR codes are two-dimensional barcodes that store information in a matrix of black and white squares. They were first developed in 1994 by the Japanese company Denso Wave, and since then, their applications have expanded exponentially. QR codes can store various types of data, such as URLs, text, contact information, and more.
Businesses use QR codes for marketing campaigns, product packaging, and even mobile payments. Personal use cases include sharing personal information, event details, or Wi-Fi network credentials. The ability to encode a wealth of data and the ease of scanning using smartphone cameras make QR codes a powerful tool in the digital landscape.
The QR Code Generation Process
QR code generation involves encoding data into a QR code format. Patterns of dark and light squares then represent the encoded data. This process requires specific algorithms to ensure proper encoding and error correction.
To simplify this process, we are providing you with a free source code to create your own QR code generator tool. The code is written in CSS, javascript, and some useful libraries to execute, making it easy for developers of all levels to understand and implement.
Free Source Code for Your QR Code Generator
<style>
h2{
text-align:center;
}
#qr-container{
width: 100%;
margin-top: 50px;
text-align:center;
}
#qr-error-msg-container{
width: 80%;
}
#qr-form-container{
width: 80%;
margin: auto;
display: flex;
flex-direction: row;
justify-content: space-between;
}
#qr-download-btn{
background-color: transparent;
font-weight: bold;
font-size: 30px;
}
#qr-error-msg{
width: auto;
background-color: bisque;
padding: 15px;
margin: auto;
display: flex;
flex-direction: row;
justify-content: space-between;
align-items: center;
}
#qr-call-btn, #qr-download-btn {
width: 20%;
border-radius: 0px;
background-color: #0000ff;
color: white;
border: 2px solid #0000ff;
padding: 15px;
font-family: poppins, sans-serif;
outline: none;
}
#qr-input-content{
width: 80%;
border-radius: 0px;
color: #0000ff;
background-color: white;
border: 2px solid #0000ff;
padding: 15px;
font-family: poppins, sans-serif;
outline: none;
}
#qr-download-section{
text-align: center;
}
@media screen and (max-width:800px) {
#qr-form-container{
width: 100%;
text-align: center;
flex-direction: column;
}
#qr-error-msg-container{
width: auto;
}
#qr-input-content{
width: auto;
float: none;
}
#qr-call-btn , #qr-download-btn, #qr-error-msg{
width: auto;
margin-top: 10px;
}
#qr-download-btn{
width: 100%;
}
}
</style>
<h2>Free QR Code Maker Tool</h2>
<div id="qr-form-container">
<input class="form-control" id="qr-input-content" placeholder="Enter text/link" required="" type="text">
<br>
<button id="qr-call-btn" type="button">Generate</button>
</div>
<div id="qr-error-msg-container" style="margin: auto;">
<p><br></p>
<div id="qr-error-msg" style="border-radius: 0%; font-family: poppins, sans-serif; margin: auto;">
<strong>Warning! Please Enter Something...</strong>
<button id="close-qr-error" style="background-color: transparent; border: none; font-size: 16px; font-weight: bold;" type="button">•</button>
</div>
</div>
<div class="text-center" id="qr-download-section">
<script src="https://code.jquery.com/jquery-3.5.1.js"></script>
<script>
function chartCall(value) {
return $('<div/>').text(value).html();
}
$('#close-qr-error').on("click", function(){
$('#qr-error-msg').hide();
});
$(function () {
$('#qr-error-msg').hide();
$('#qr-call-btn').click(function () {
if($('#qr-input-content').val() != 0){
$('#qr-error-msg').hide();
$("#qr-download-section").empty();
let finalURL = 'https://chart.googleapis.com/chart?cht=qr&chl=' + chartCall($('#qr-input-content').val()) + '&chs=400x400&chld=L|0';
var qrImg = "<img src='' class='qr-code' />";
$("#qr-download-section").append(qrImg);
$('.qr-code').attr('src', finalURL);
var qrSpace = "<p><br></p>";
var qrDwnldBtn= "<a href="+finalURL+"> <button id='qr-download-btn' type='button' style='font-size: 12px;'>Download</button> </a> ";
$("#qr-download-section").append(qrSpace,qrDwnldBtn);
}
else{
$("#qr-download-section").empty();
$('#qr-error-msg').show();
}
});
});
</script>
<p>In case download button not work just right click or click and hold on QR image.</p>
</div>This source code is designed to take user input, such as a URL or text, and generate a QR code image that can be displayed and scanned by users. It incorporates error correction to ensure that even if parts of the QR code are damaged or obscured, it can still be successfully scanned.
How to Use the Source Code
- Copy Above Code
- Run the Code: Paste in the index.html file also add a header section the code only has the functional part for QR code generation.
Customize and Expand
The provided source code serves as a foundation for the QR code generator. You can customize the code to match your requirements or expand its functionalities. For instance, you could add features like customizing the QR code colors, incorporating a logo, or generating QR codes in bulk.
Conclusion
QR codes are a simple yet powerful way to convey information in various scenarios. By providing you with a free source code for a QR code generator tool, we’ve aimed to make creating and implementing QR codes even more accessible. Whether you’re a developer looking to add QR code generation to your project or simply curious about the technology behind QR codes, this source code will serve as an excellent starting point.
Feel free to download or copy and paste, experiment, and adapt the code to suit your needs. Happy QR coding!
