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QRCode / 2d Barcode api with both server side and client side support using canvas
The qrcode npm package is a library for generating QR codes. It can be used to create QR codes in various formats such as images or canvas for web applications, and it supports a range of customization options.
Generating QR Code as Data URL
This feature allows you to generate a QR code as a data URL, which can be used directly in image tags or CSS backgrounds.
const QRCode = require('qrcode');
QRCode.toDataURL('https://www.example.com', function (err, url) {
console.log(url);
});
Generating QR Code as PNG Image File
This feature allows you to generate a QR code and save it as a PNG image file on the filesystem.
const QRCode = require('qrcode');
QRCode.toFile('path/to/output.png', 'https://www.example.com', function (err) {
if (err) throw err;
console.log('QR Code saved as image file!');
});
Generating QR Code as UTF8 String
This feature allows you to generate a QR code as a UTF8 string, which can be printed to the terminal or used in text-based formats.
const QRCode = require('qrcode');
QRCode.toString('https://www.example.com', { type: 'terminal' }, function (err, string) {
if (err) throw err;
console.log(string);
});
The qrcode-svg package generates QR codes in SVG format. It offers a different output format compared to qrcode and might be preferred when working with vector graphics.
The qr-image package is another alternative for generating QR codes. It can create QR codes in PNG, SVG, EPS, and PDF formats. It provides a different API and additional output formats compared to qrcode.
FAQs
QRCode / 2d Barcode api with both server side and client side support using canvas
The npm package qrcode receives a total of 2,314,278 weekly downloads. As such, qrcode popularity was classified as popular.
We found that qrcode demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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