Quick Start

https://www.barcodegen.net

Authorization: Bearer YOUR_API_KEY

GET /api/barcode/Code128/ABC-123

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://www.barcodegen.net/api/barcode/Code128/ABC-123"

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://www.barcodegen.net/api/barcode/Code128/ABC-123?format=png" \
  --output barcode.png

GET /api/barcode/{format}/{data}

# SVG (free and paid plans)
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://www.barcodegen.net/api/barcode/EAN13/5901234123457"

# PNG (paid plans only)
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://www.barcodegen.net/api/barcode/EAN13/5901234123457?format=png" \
  --output barcode.png

# JPG (paid plans only)
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://www.barcodegen.net/api/barcode/QRCODE/https://example.com?format=jpg" \
  --output barcode.jpg

HTTP/1.1 200 OK
Content-Type: image/svg+xml
Cache-Control: public, max-age=31536000, immutable
X-Credits-Cost: 1
X-Credits-Remaining: 499

{
  "error": "Invalid barcode value for format \"EAN13\": 123"
}

{
  "error": "Format \"png\" is available on paid plans only. Upgrade at https://www.barcodegen.net/pricing",
  "upgrade_url": "https://www.barcodegen.net/pricing"
}

// app/api/barcode/[...slug]/route.ts (proxy)
export async function GET(
  req: Request,
  { params }: { params: { slug: string[] } }
) {
  const [format, data] = params.slug;
  const outputFormat = new URL(req.url).searchParams.get('format') ?? 'svg';

  const upstream = await fetch(
    `https://www.barcodegen.net/api/barcode/${format}/${encodeURIComponent(data)}?format=${outputFormat}`,
    { headers: { Authorization: `Bearer ${process.env.BARCODE_API_KEY}` } }
  );

  const body = await upstream.arrayBuffer();
  return new Response(body, {
    headers: {
      'Content-Type': upstream.headers.get('Content-Type') ?? 'image/svg+xml',
      'Cache-Control': 'public, max-age=31536000, immutable',
    },
  });
}

<!-- SVG via proxy (free plan) -->
<img src="/api/barcode/Code128/ABC-123" alt="Barcode ABC-123" />

<!-- PNG via proxy (paid plan) -->
<img src="/api/barcode/Code128/ABC-123?format=png" alt="Barcode ABC-123" />

Cache-Control: public, max-age=31536000, immutable

const response = await fetch(
  'https://www.barcodegen.net/api/barcode/Code128/ABC-123',
  { headers: { Authorization: 'Bearer YOUR_API_KEY' } }
);

if (!response.ok) {
  const { error } = await response.json();
  throw new Error(error);
}

const svg = await response.text();
const remaining = response.headers.get('X-Credits-Remaining');

console.log(`Credits remaining: ${remaining}`);
document.getElementById('barcode').innerHTML = svg;

const response = await fetch(
  'https://www.barcodegen.net/api/barcode/Code128/ABC-123?format=png',
  { headers: { Authorization: 'Bearer YOUR_API_KEY' } }
);

if (!response.ok) {
  const { error } = await response.json();
  throw new Error(error);
}

const blob = await response.blob();
const url = URL.createObjectURL(blob);

const a = document.createElement('a');
a.href = url;
a.download = 'barcode.png';
a.click();

import requests

resp = requests.get(
    'https://www.barcodegen.net/api/barcode/EAN13/5901234123457',
    headers={'Authorization': 'Bearer YOUR_API_KEY'},
)
resp.raise_for_status()

with open('barcode.svg', 'w') as f:
    f.write(resp.text)

print('Credits remaining:', resp.headers['X-Credits-Remaining'])

# PNG output (paid plans)
resp = requests.get(
    'https://www.barcodegen.net/api/barcode/EAN13/5901234123457',
    params={'format': 'png'},
    headers={'Authorization': 'Bearer YOUR_API_KEY'},
)
resp.raise_for_status()

with open('barcode.png', 'wb') as f:
    f.write(resp.content)

$ch = curl_init('https://www.barcodegen.net/api/barcode/QRCODE/https://example.com');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Authorization: Bearer YOUR_API_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$svg = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

if ($status === 200) {
    file_put_contents('barcode.svg', $svg);
}