Node.js Requires Chilkat v11.7.0+

Generate a QR Code as SVG

See more QR Code Examples

Demonstrates SVG output. An SVG is a vector image, so it stays sharp at any size, which suits print and responsive web pages. Setting output.format to svg and output.return to text returns the SVG document as a string in outputs[0].text. The SVG can also be written straight to a file with output.path, the same as a PNG. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    var json = new chilkat.JsonObject();
    json.UpdateString("payload.text","https://www.chilkatsoft.com/");
    json.UpdateString("output.format","svg");

    //  An SVG is text, so it can be returned as text rather than as base64.
    json.UpdateString("output.return","text");

    var fmt = new chilkat.Formats();
    var jsonOut = new chilkat.JsonObject();
    success = fmt.QrCode("generate",json,jsonOut);
    if (success == false) {
        console.log(fmt.LastErrorText);
        return;
    }

    var sbSvg = new chilkat.StringBuilder();
    jsonOut.StringOfSb("outputs[0].text",sbSvg);

    console.log("MIME type: " + jsonOut.StringOf("outputs[0].mimeType"));
    console.log("size: " + jsonOut.IntOf("outputs[0].width") + " x " + jsonOut.IntOf("outputs[0].height") + " " + jsonOut.StringOf("outputs[0].units"));
    console.log("SVG length: " + sbSvg.Length + " characters");

    //  The SVG is a complete document that can be saved, or placed inline in an HTML page.
    success = sbSvg.WriteFile("qa_output/qr_chilkat.svg","utf-8",false);
    if (success == false) {
        console.log(sbSvg.LastErrorText);
        return;
    }

    //  The SVG:

    //  

    //  Sample output:

    //  MIME type: image/svg+xml
    //  size: 148 x 148 px
    //  SVG length: 12500 characters

}

chilkatExample();