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API · /barcodecheck-api

Barcode & Standard-Code Validator API

healthy 4,540 Subscribers

Validate and work with product and publication codes. Check the check digit of any EAN-8, UPC-A, EAN-13, GTIN-14, ISBN-10, ISBN-13 or ISSN code — the type is detected automatically and you get back whether it is valid plus the expected check digit. Compute the missing check digit for a partial code, and validate or convert ISBNs between the 10- and 13-digit forms. Hyphens and spaces are ignored, so you can paste codes straight from a label or catalogue. Pure local computation — no key, no third-party service, instant. Live. 4 endpoints. Built for retail and inventory systems, e-commerce catalogues, publishing, library tooling and data validation. Distinct from barcode image generation, payment-card (Luhn) and IBAN checks.

#barcode #gtin #ean #isbn #check-digit #developer-tools
api.oanor.com/barcodecheck-api
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Machine-readable spec so AI agents can integrate this API.

/api/barcodecheck-api/openapi.json
/api/barcodecheck-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
88 ms
Server probes · 24h
Subscribers
4,540
active
Total calls
56
last 7 days
status Full status page → · 20 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 1,500 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,500 calls/month
  • 2 req/sec
  • EAN/UPC/GTIN/ISBN/ISSN
  • No credit card
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Starter

€6.80 /month

  • 28,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 28k calls/month
  • 8 req/sec
  • Validate + compute + convert
  • Email support
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Pro

€26.40 /month

  • 182,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 182k calls/month
  • 20 req/sec
  • Catalogue / inventory validation
  • Priority support
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Mega

€62.40 /month

  • 930,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 930k calls/month
  • 50 req/sec
  • Platform scale
  • Dedicated SLA
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Built by

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PremiumApi

Related APIs

Other APIs with overlapping tags.

QR Code Reader API

Read (decode) a QR code from an image — the inverse of a QR generator. Pass an image URL (we fetch it) or a base64 image (a data-URI or raw base64) and get back the decoded text or URL, the QR version and the corner coordinates of the code within the image. PNG, JPEG, BMP, TIFF and GIF are supported (up to 10 MB); large images are downscaled automatically so decoding stays fast. Decoding runs locally (no third-party scan service) and nothing is stored. Every call is live. 2 endpoints. Built for scanning uploaded QR codes, processing screenshots and documents, ticket and coupon validation, and back-end automation. No upstream key.

api.oanor.com/qrdecode-api

Barcode API

Generate barcodes as PNG images — EAN-13, EAN-8, UPC-A/E, Code 128, Code 39, ITF-14, ISBN and 2D codes (QR, Data Matrix, PDF417, Aztec) — returned as base64 or a raw image, with adjustable size and human-readable text. Fully server-side. Perfect for retail, inventory, shipping labels, ticketing and asset tracking.

api.oanor.com/barcode-api

Food & Nutrition API

Look up packaged food products by barcode (EAN/UPC/GTIN) and get the product name, brand, ingredients, allergens, Nutri-Score, NOVA group, Eco-Score and per-100g nutrition facts — or search the catalogue by name. Backed by the Open Food Facts database. Ideal for nutrition trackers, diet and fitness apps, grocery and retail tools.

api.oanor.com/food-api

QR Code API

Generate QR codes on demand as a base64 PNG, an SVG, or a raw embeddable image. Customise size, quiet-zone margin, error-correction level and foreground/background colors. Encode URLs, text, Wi-Fi, vCards and more.

api.oanor.com/qr-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Barcode & Standard-Code Validator API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Barcode & Standard-Code Validator API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Barcode & Standard-Code Validator API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Barcode & Standard-Code Validator API cost?
Barcode & Standard-Code Validator API has a free tier with 100 calls / month. Paid plans start at €6.80 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Barcode & Standard-Code Validator API GDPR-compliant?
All requests to Barcode & Standard-Code Validator API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/barcodecheck-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/barcodecheck-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/barcodecheck-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/barcodecheck-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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