How to generate QR code together with the image in a center (2024)

To generate a QR code with an image embedded in the center using Node.js, you can utilize the qrcode library along with canvas to achieve this. Here's a step-by-step guide on how to generate a QR code with an image in the center:

Step 1: Setup Node.js Project

First, initialize a Node.js project if you haven't already:

mkdir qr-code-generatorcd qr-code-generatornpm init -y

Step 2: Install Dependencies

Install the required libraries:

npm install qrcode canvas
  • qrcode: Generates QR codes.
  • canvas: Provides a canvas API for Node.js, which allows drawing and manipulating images.

Step 3: Create QR Code with Image

Create a script (generateQRWithImage.js, for example) to generate the QR code with an image in the center:

const QRCode = require('qrcode');const { createCanvas, loadImage } = require('canvas');const fs = require('fs');// Function to generate QR code with imageasync function generateQRWithImage(data, imagePath, outputFile) { try { // Generate QR code const qrCode = await QRCode.toDataURL(data, { errorCorrectionLevel: 'H' }); // Load image const image = await loadImage(imagePath); // Create canvas const canvas = createCanvas(300, 300); const ctx = canvas.getContext('2d'); // Draw QR code ctx.drawImage(await loadImage(qrCode), 0, 0, 300, 300); // Calculate position for the image in the center const centerX = (canvas.width - image.width) / 2; const centerY = (canvas.height - image.height) / 2; // Draw image in the center ctx.drawImage(image, centerX, centerY); // Save canvas to file const outputStream = fs.createWriteStream(outputFile); const stream = canvas.createPNGStream(); stream.pipe(outputStream); console.log(`QR code with image saved to ${outputFile}`); } catch (error) { console.error('Error generating QR code:', error); }}// Usage examplegenerateQRWithImage('https://example.com', 'logo.png', 'qr_with_logo.png');

Explanation

  • QRCode.toDataURL: Generates a QR code as a data URL.
  • loadImage: Loads images asynchronously using canvas.
  • createCanvas: Creates a new canvas with specified dimensions (300x300 in this case).
  • drawImage: Draws the QR code and image onto the canvas.
  • createPNGStream: Creates a PNG stream from the canvas.
  • pipe: Pipes the PNG stream to a writable file stream (outputStream).

Usage

Replace 'https://example.com' with your desired URL or data for the QR code, 'logo.png' with the path to your image file to be placed in the center, and 'qr_with_logo.png' with the desired output file path.

Additional Considerations

  • Ensure that the image (logo.png in this case) is smaller than the dimensions of the QR code canvas to fit properly in the center.
  • Adjust canvas dimensions (300x300 in this example) as per your requirements.

This script combines the QR code generation with the ability to overlay an image at the center using Node.js and the canvas library, suitable for generating customized QR codes with embedded logos or images.

Examples

  1. Node.js QR code generation with an image centered:

    • Description: Generate a QR code image with an embedded logo or image centered in the QR code.
    • Code:
      const qr = require('qr-image');const fs = require('fs');const Jimp = require('jimp');// Generate QR codeconst qr_png = qr.imageSync('Your QR Code Data', { type: 'png' });fs.writeFileSync('qr.png', qr_png);// Load logo/imageJimp.read('logo.png', (err, image) => { if (err) throw err; // Resize logo to fit within QR code image.resize(50, 50); // Composite logo/image in the center of QR code const qrWithLogo = qr.imageSync('Your QR Code Data', { type: 'png' }); image.composite(qrWithLogo, (image.bitmap.width - image.bitmap.width / 2) - (qrWithLogo.bitmap.width / 2), (image.bitmap.height - image.bitmap.height / 2) , 'xy'); image.write('qr_with_logo.png');});
  2. Node.js QR code with embedded logo and centered positioning:

    • Description: Generate a QR code with a logo or image embedded and centered using QRCode and Jimp libraries.
    • Code:
      const QRCode = require('qrcode');const Jimp = require('jimp');const fs = require('fs');// Generate QR codeQRCode.toFile('qr.png', 'Your QR Code Data', { errorCorrectionLevel: 'H', width: 300, margin: 2}, function (err) { if (err) throw err; // Load logo/image Jimp.read('logo.png', function (err, image) { if (err) throw err; // Resize logo to fit within QR code image.resize(50, 50); // Calculate positioning for centering logo const x = (300 - image.bitmap.width) / 2; const y = (300 - image.bitmap.height) / 2; // Composite logo on QR code image.composite(image, x, y); image.write('qr_with_logo.png'); });});
  3. Node.js QR code generation with image centering using qr-image and gm:

    • Description: Generate a QR code and center an image using qr-image and GraphicsMagick (gm) for Node.js.
    • Code:
      const qr = require('qr-image');const fs = require('fs');const gm = require('gm').subClass({ imageMagick: true });// Generate QR codeconst qr_png = qr.imageSync('Your QR Code Data', { type: 'png' });fs.writeFileSync('qr.png', qr_png);// Load and resize imagegm('logo.png') .resize(50, 50) .write('resized_logo.png', function (err) { if (err) throw err; // Composite logo in the center of QR code gm() .command("composite") .in("-gravity", "center") .in("resized_logo.png") .in("qr.png") .write("qr_with_logo.png", function (err) { if (err) throw err; console.log('QR code with logo generated.'); }); });
  4. Node.js QR code with centered image using qr-image and Canvas:

    • Description: Generate a QR code and center an image using qr-image and node-canvas for Node.js.
    • Code:
      const qr = require('qr-image');const fs = require('fs');const { createCanvas, loadImage } = require('canvas');// Generate QR codeconst qr_png = qr.imageSync('Your QR Code Data', { type: 'png' });fs.writeFileSync('qr.png', qr_png);// Load and resize imageloadImage('logo.png').then(image => { const canvas = createCanvas(image.width, image.height); const ctx = canvas.getContext('2d'); ctx.drawImage(image, 0, 0, image.width, image.height); // Composite logo in the center of QR code ctx.drawImage(qr_png, (canvas.width - qr_png.width) / 2, (canvas.height - qr_png.height) / 2); fs.writeFileSync('qr_with_logo.png', canvas.toBuffer());});
  5. Node.js QR code with logo centered using qr-image and Sharp:

    • Description: Generate a QR code and center an image using qr-image and Sharp image processing library.
    • Code:
      const qr = require('qr-image');const fs = require('fs');const sharp = require('sharp');// Generate QR codeconst qr_png = qr.imageSync('Your QR Code Data', { type: 'png' });fs.writeFileSync('qr.png', qr_png);// Resize and composite logo in the center of QR codesharp('logo.png') .resize(50, 50) .toBuffer() .then(logoBuffer => { sharp('qr.png') .composite([{ input: logoBuffer, gravity: 'center' }]) .toFile('qr_with_logo.png', (err, info) => { if (err) throw err; console.log('QR code with logo generated.'); }); }) .catch(err => { console.error(err); });
  6. Node.js QR code with logo centered using qr-image and ImageMagick:

    • Description: Generate a QR code and center an image using qr-image and ImageMagick (gm module).
    • Code:
      const qr = require('qr-image');const fs = require('fs');const gm = require('gm').subClass({ imageMagick: true });// Generate QR codeconst qr_png = qr.imageSync('Your QR Code Data', { type: 'png' });fs.writeFileSync('qr.png', qr_png);// Resize and composite logo in the center of QR codegm('logo.png') .resize(50, 50) .gravity('Center') .composite('qr.png') .write('qr_with_logo.png', function (err) { if (!err) console.log('QR code with logo generated.'); });
  7. Node.js QR code generation with logo centered using qr-image and Canvas:

    • Description: Generate a QR code and center an image using qr-image and Canvas API for Node.js.
    • Code:
      const qr = require('qr-image');const fs = require('fs');const { createCanvas, loadImage } = require('canvas');// Generate QR codeconst qr_png = qr.imageSync('Your QR Code Data', { type: 'png' });fs.writeFileSync('qr.png', qr_png);// Load and resize imageloadImage('logo.png').then(image => { const canvas = createCanvas(image.width, image.height); const ctx = canvas.getContext('2d'); ctx.drawImage(image, 0, 0, image.width, image.height); // Composite logo in the center of QR code ctx.drawImage(qr_png, (canvas.width - qr_png.width) / 2, (canvas.height - qr_png.height) / 2); fs.writeFileSync('qr_with_logo.png', canvas.toBuffer());});
  8. Node.js QR code generation with logo centered using qr-image and GraphicsMagick:

    • Description: Generate a QR code and center an image using qr-image and GraphicsMagick (gm module) for Node.js.
    • Code:
      const qr = require('qr-image');const fs = require('fs');const gm = require('gm').subClass({ imageMagick: true });// Generate QR codeconst qr_png = qr.imageSync('Your QR Code Data', { type: 'png' });fs.writeFileSync('qr.png', qr_png);// Resize and composite logo in the center of QR codegm('logo.png') .resize(50, 50) .gravity('Center') .composite('qr.png') .write('qr_with_logo.png', function (err) { if (!err) console.log('QR code with logo generated.'); });
  9. Node.js QR code with image centered using qr-image and ImageMagick:

    • Description: Generate a QR code and center an image using qr-image and ImageMagick (gm module).
    • Code:
      const qr = require('qr-image');const fs = require('fs');const gm = require('gm').subClass({ imageMagick: true });// Generate QR codeconst qr_png = qr.imageSync('Your QR Code Data', { type: 'png' });fs.writeFileSync('qr.png', qr_png);// Resize and composite image in the center of QR codegm('logo.png') .resize(50, 50) .gravity('Center') .composite('qr.png') .write('qr_with_logo.png', function (err) { if (!err) console.log('QR code with logo generated.'); });
  10. Node.js QR code generation with image centered using qr-image and Sharp:

    • Description: Generate a QR code and center an image using qr-image and Sharp image processing library.
    • Code:
      const qr = require('qr-image');const fs = require('fs');const sharp = require('sharp');// Generate QR codeconst qr_png = qr.imageSync('Your QR Code Data', { type: 'png' });fs.writeFileSync('qr.png', qr_png);// Resize and composite image in the center of QR codesharp('logo.png') .resize(50, 50) .composite([{ input: qr_png, gravity: 'center' }]) .toFile('qr_with_logo.png', (err, info) => { if (err) throw err; console.log('QR code with logo generated.'); });

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How to generate QR code together with the image in a center (2024)

FAQs

Can you put an image in the center of a QR code? ›

4 | Add an image

Another way to capture your customer's attention is by placing an image into the center of your QR Code.

How to create a QR code with an image? ›

To create a QR code for photo or image:
  1. choose QR code type: opt for the QR code type designed for images or pictures;
  2. insert the image: upload the image you want to incorporate into the QR code;
  3. customize appearance: adjust design elements to harmonize with your style or branding;

Can I change the picture in the middle of a QR code? ›

You can change just about every design element of a QR code: you can create a circular QR code (or any other custom QR shape), a QR code with any color, and above all elset—you can make a custom QR code with a logo in the center!

Can you embed an image in a QR code? ›

A QR code with an image is one of the most popular types of interactive codes. This tool is suitable for both personal use and business tasks. Creating this tool is as simple as possible, and you can use anything as an image: a hotel room photo, restaurant menu, or useful infographics.

Can a QR code be embedded in a logo? ›

You certainly can, and it's easy to do so using the free QR code generator with logo. And to make it even better, you can create a logo in QR code for free.

What is the best QR code generator? ›

Detailed review of each QR code generator
  • VistaPrint – Best for Printed Business Materials. ...
  • QR Batch – Best for Bulk QR Code Generation. ...
  • QR Tiger – Best for Logo QR Codes. ...
  • Zazzle – Best for Print on Demand Brands. ...
  • Shopify – Best Ecommerce Integration for QR Codes. ...
  • QR Code Monkey – Best for High Customization.

Can an image be encoded in a QR code? ›

The image format that image QR codes can store is PNG and JPG. For only a single QR code PNG or QR code JPG, you can use the file QR code converter and upload your file. However, if you need to embed multiple images in one QR, you should use the landing page QR code solution.

Can you bulk create QR codes? ›

To save time and effort, you can now create QR Codes in bulk. Note - Bulk QR code creation is available starting from the Lite plan and above. Login to your Uniqode dashboard and click the 'QR Codes' button in the left panel. Select 'Bulk Upload'.

What is the easiest way to create a QR code? ›

The Adobe Express app is quick and easy to use on smartphones and other mobile devices. Simply open the QR code generator, add your desired link, choose a style and color, download the file, and you're done.

Can you fit an image in a QR code? ›

To convert an image to a QR code, you need to use an image QR code generator. Your image QR code will then be accessible using a smartphone device by scanning the code. Your image/s will be displayed directly to the user's smartphone screen once the QR code is scanned.

Does a QR code have to be square? ›

Round QR codes, like the ones we generate at Hovercode, or even weirder shaped ones like clouds or cats do exist, but the functional, scannable part of QR codes are always square. The shape you're seeing is a template designed around a square QR code.

Can a QR code hold an image? ›

With Image Gallery QR Code, you can add as many images as you want. Share wedding photos, event launches, home listings, hotel facilities, restaurant menu, fashion lookbook, and much more.

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