Batch Generate QR Codes

import csv
import qrcode
from pathlib import Path

output_dir = Path("qr_codes")
output_dir.mkdir(exist_ok=True)

# Read URLs from CSV (columns: id, name, url)
with open("attendees.csv") as f:
    reader = csv.DictReader(f)
    count = 0
    for row in reader:
        qr = qrcode.QRCode(
            version=1,
            error_correction=qrcode.constants.ERROR_CORRECT_H,
            box_size=10,
            border=4,
        )
        qr.add_data(row["url"])
        qr.make(fit=True)
        img = qr.make_image(fill_color="black", back_color="white")
        filename = f"{row['id']}_{row['name'].replace(' ', '_')}.png"
        img.save(output_dir / filename)
        count += 1

print(f"Generated {count} QR codes in {output_dir}/")

# For SVG output, use qrcode[pil] with svg factory
import qrcode.image.svg
factory = qrcode.image.svg.SvgPathImage
qr = qrcode.make("https://example.com", image_factory=factory)
qr.save("output.svg")

const QRCode = require('qrcode');
const fs = require('fs');
const path = require('path');

const outputDir = './qr_codes';
fs.mkdirSync(outputDir, { recursive: true });

// Read URLs from a text file
const urls = fs.readFileSync('urls.txt', 'utf-8')
  .split('\n')
  .filter(Boolean);

async function generateAll() {
  for (let i = 0; i < urls.length; i++) {
    const filename = path.join(outputDir, `qr_${String(i + 1).padStart(3, '0')}.png`);
    await QRCode.toFile(filename, urls[i], {
      width: 400,
      margin: 2,
      errorCorrectionLevel: 'H',
    });
  }
  console.log(`Generated ${urls.length} QR codes`);
}

generateAll();

// For SVG output
// await QRCode.toString(url, { type: 'svg' });