# QR Code Generator

Links: [Home](../../../index.md)

Wrapper for the [qrcode-generator](https://github.com/kazuhikoarase/qrcode-generator) library. Generates QR codes from text, URLs, or data.

## Loading

```js
Application.require("thirdparty/convert/image/qrcode/generator").then(function (qrcode) {
    // qrcode is the generator constructor
});
```

## Use Cases

### Generate a QR code image

```js
Application.require("thirdparty/convert/image/qrcode/generator").then(function (qrcode) {
    var qr = qrcode(0, 'M');
    qr.addData('https://example.com');
    qr.make();

    document.getElementById('qr').innerHTML = qr.createImgTag(4, 8);
});
```

### Generate QR code as data URL

```js
Application.require("thirdparty/convert/image/qrcode/generator").then(function (qrcode) {
    var qr = qrcode(0, 'L');
    qr.addData('Hello World');
    qr.make();

    var dataUrl = qr.createDataURL(4, 8);
    var img = new Image();
    img.src = dataUrl;
    document.body.appendChild(img);
});
```

### Generate QR code as SVG

```js
Application.require("thirdparty/convert/image/qrcode/generator").then(function (qrcode) {
    var qr = qrcode(0, 'H');
    qr.addData('Contact: +1234567890');
    qr.make();

    document.getElementById('qr-svg').innerHTML = qr.createSvgTag(4, 8);
});
```

## Notes

- First argument to `qrcode()` is the type number (0 = auto). Second is error correction level: `'L'`, `'M'`, `'Q'`, `'H'`.
- Methods: `createImgTag(cellSize, margin)`, `createDataURL(cellSize, margin)`, `createSvgTag(cellSize, margin)`, `createTableTag(cellSize, margin)`