qrious

Pros of qrcodejs

• Simpler API with fewer configuration options, making it easier to use for basic QR code generation
• Smaller file size, which can be beneficial for projects with limited resources
• Supports more legacy browsers, including IE6+

Cons of qrcodejs

• Less actively maintained, with the last update in 2014
• Fewer customization options compared to qrious
• Limited documentation and examples available

Code Comparison

qrcodejs:

var qrcode = new QRCode("qrcode", {
    text: "http://example.com",
    width: 128,
    height: 128
});

qrious:

var qr = new QRious({
    element: document.getElementById('qrcode'),
    value: 'http://example.com',
    size: 128
});

Both libraries offer simple ways to generate QR codes, but qrious provides more advanced features and customization options. qrcodejs is more straightforward and may be suitable for simpler projects, while qrious offers greater flexibility and is actively maintained. The choice between the two depends on the specific requirements of your project and the level of customization needed.

Pros of qrcode-generator

• Supports a wider range of output formats, including SVG, PNG, and ASCII
• More comprehensive documentation and examples
• Offers more customization options for QR code appearance

Cons of qrcode-generator

• Larger file size and potentially slower performance
• Less frequent updates and maintenance
• More complex API, which may be harder for beginners to use

Code Comparison

qrcode-generator:

var qr = qrcode(4, 'L');
qr.addData('Hello, World!');
qr.make();
var imgTag = qr.createImgTag(4);

qrious:

var qr = new QRious({
  value: 'Hello, World!',
  size: 250
});
var dataURL = qr.toDataURL();

Both libraries allow for easy QR code generation, but qrcode-generator requires specifying error correction level and version, while qrious provides a simpler API with sensible defaults. qrcode-generator offers more control over the output format, while qrious focuses on canvas-based rendering and data URL generation.

Pros of node-qrcode

• Supports more output formats (PNG, SVG, terminal, etc.)
• Offers more customization options for QR code generation
• Has better documentation and examples

Cons of node-qrcode

• Larger package size and more dependencies
• Slightly more complex API for basic usage
• May have slower performance for simple QR code generation

Code Comparison

qrious:

var qr = new QRious({
  value: 'https://example.com',
  size: 250
});
var dataURL = qr.toDataURL();

node-qrcode:

QRCode.toDataURL('https://example.com', { width: 250 }, function (err, url) {
  console.log(url);
});

Both libraries provide simple ways to generate QR codes, but node-qrcode offers more flexibility and output options at the cost of a slightly more complex API. qrious is more lightweight and straightforward for basic use cases, while node-qrcode is better suited for projects requiring advanced customization or multiple output formats.

Pros of QR-Code-generator

• Supports multiple programming languages (Java, TypeScript/JavaScript, Python, C++, Rust)
• Provides more advanced features like error correction level and mask pattern customization
• Offers comprehensive documentation and examples

Cons of QR-Code-generator

• Larger codebase and potentially more complex to integrate
• May have a steeper learning curve for beginners
• Less focused on browser-based usage compared to qrious

Code Comparison

QR-Code-generator (JavaScript):

const qr = qrcodegen.QrCode.encodeText("Hello, world!", qrcodegen.QrCode.Ecc.MEDIUM);
const svg = qr.toSvgString(4);

qrious:

const qr = new QRious({
  value: 'Hello, world!',
  size: 250
});
const dataURL = qr.toDataURL();

Both libraries allow for easy QR code generation, but QR-Code-generator offers more granular control over the encoding process, while qrious provides a simpler API for quick implementation in web environments.

Pros of jsQR

• More comprehensive QR code scanning capabilities, including support for various QR code versions and error correction levels
• Better performance for QR code detection and decoding in complex images or video streams
• Actively maintained with regular updates and bug fixes

Cons of jsQR

• Larger file size and potentially higher resource usage
• Steeper learning curve due to more advanced features and options
• May be overkill for simple QR code generation tasks

Code Comparison

jsQR (scanning):

const code = jsQR(imageData.data, imageData.width, imageData.height);
if (code) {
  console.log("Found QR code", code.data);
}

qrious (generation):

var qr = new QRious({
  element: document.getElementById('qr-code'),
  value: 'https://example.com'
});

Summary

jsQR is better suited for complex QR code scanning tasks, offering more features and better performance. qrious, on the other hand, is simpler and more lightweight, making it ideal for basic QR code generation. The choice between the two depends on the specific requirements of your project, with jsQR being the preferred option for scanning and qrious for generation.

Pros of ZXing

• More comprehensive barcode support (1D and 2D)
• Multi-platform compatibility (Java, Android, iOS)
• Larger community and more frequent updates

Cons of ZXing

• Larger library size, potentially impacting performance
• Steeper learning curve due to more complex API
• May be overkill for simple QR code generation tasks

Code Comparison

ZXing (Java):

BitMatrix bitMatrix = new MultiFormatWriter().encode(
    "Hello, World!", BarcodeFormat.QR_CODE, 200, 200);
MatrixToImageWriter.writeToStream(
    bitMatrix, "PNG", new FileOutputStream("qr-code.png"));

QRious (JavaScript):

var qr = new QRious({
  value: 'Hello, World!',
  size: 200
});
var dataURL = qr.toDataURL();

ZXing offers more flexibility and options for encoding, while QRious provides a simpler API for quick QR code generation. ZXing's code demonstrates its multi-format support, whereas QRious focuses solely on QR codes with a more straightforward approach.