(Node.js) QR Code Generator via api.qrserver.com REST API

See more HTTP Examples

Demonstrates how to generate a QR code using the api.qrserver.com REST API service.

For more information, see https://goqr.me/api/doc/create-qr-code/

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    var http = new chilkat.Http();
    var success;

    // Send the following GET request to get a binary response.
    // The body of the binary response contains the image data for the QR code.
    // https://api.qrserver.com/v1/create-qr-code/?data=[URL-encoded-text]&size=[pixels]x[pixels]

    var queryParams = new chilkat.JsonObject();
    queryParams.UpdateString("data","Hello World");
    queryParams.UpdateString("size","100x100");

    // Get a PNG file..
    // Possible formats are:
    // png
    // gif
    // jpeg
    // jpg
    // svg
    // eps
    // Case matters.  Use lowercase.
    queryParams.UpdateString("format","png");

    // Send the GET request to an endpoint.
    // Chilkat will add the url-encoded query params passed in the JSON.
    // resp: HttpResponse
    var resp = http.QuickRequestParams("GET","https://api.qrserver.com/v1/create-qr-code/",queryParams);
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

    // Did it succeed?
    if (resp.StatusCode !== 200) {
        // The response body, if anything, would not be the image data, but would likely be the error text (or HTML, or whatever...)
        console.log(resp.BodyStr);
        console.log("Response status = " + resp.StatusCode);
        console.log("Failed.");

        return;
    }

    // Success if we get here..
    // Save the binary body as the PNG file, or you can get the bytes of the PNG..
    success = resp.SaveBodyBinary("c:/temp/qa_output/qr_code.png");

    // Or get the bytes:
    var bd = new chilkat.BinData();
    resp.GetBodyBd(bd);
    // Use the bytes in bd...
    // See the online reference documentation for the function to access the bytes directly.

    console.log("Success.");

}

chilkatExample();