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API · /qr-api

QR Code API

healthy 4,793 Subscribers

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.

#qr #qr-code #barcode #generator #image #png #svg
api.oanor.com/qr-api
Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
116 ms
Server probes · 24h
Subscribers
4,793
active
Total calls
132
last 7 days
status Full status page → · 132 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 2,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 2,000 QR codes/month at 2 req/s
  • PNG + base64 output, sizing & quiet-zone margin
  • No credit card required
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Basic

€6.00 /month

  • 75,000 calls / month
  • 10 requests / second
  • Hard cap (429 above quota, no overage)
  • 75,000 QR codes/month at 10 req/s
  • SVG + PNG, custom fg/bg colors & error-correction level
  • Commercial use allowed
  • Email support
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Pro

€18.00 /month

  • 400,000 calls / month
  • 35 requests / second
  • Hard cap (429 above quota, no overage)
  • 400,000 QR codes/month at 35 req/s
  • All formats incl. raw embeddable image, full color & ECC control
  • Priority email support
  • Undercuts QuickChart Pro on price and quota
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Mega

€44.00 /month

  • 2,500,000 calls / month
  • 120 requests / second
  • Hard cap (429 above quota, no overage)
  • 2,500,000 QR codes/month at 120 req/s
  • Highest throughput for high-volume batch generation
  • 99.9% uptime SLA + priority support
  • Commercial use, all output formats
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Built by

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PremiumApi

Related APIs

Other APIs with overlapping tags.

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

Sudoku API

Generate, solve and validate Sudoku puzzles through a fast, fully-local API. Create fresh puzzles at four difficulty levels (easy, medium, hard, expert), each guaranteed to have exactly one solution, returned as both an 81-character string and a 9x9 grid alongside the full solution. Solve any valid puzzle with a backtracking engine that also reports whether the solution is unique, and validate a grid to detect rule conflicts and completeness. Inputs accept an 81-character string (0 or . for blanks) or a 9x9 array, by GET or JSON POST. Pure server-side compute with no third-party upstream, so responses are instant and the service is always available. Ideal for puzzle apps and games, newspapers and printables, tutors and training-data generation.

api.oanor.com/sudoku-api

Password API

A fast, fully-local password toolkit: generate cryptographically-secure random passwords (configurable length, character classes and exclude-similar), estimate password strength (entropy bits, a 0-4 score, character-class breakdown, common-password detection, an offline crack-time estimate and actionable feedback), and create memorable diceware-style passphrases. Built on Node crypto, no third-party upstream, and inputs are never logged — so responses are instant, private and always available. Ideal for signup and account flows, admin tools, password managers and security features.

api.oanor.com/password-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for QR Code API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call QR Code API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for QR Code 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 QR Code API cost?
QR Code API has a free tier with 100 calls / month. Paid plans start at €6.00 / 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 QR Code API GDPR-compliant?
All requests to QR Code 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/qr-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/qr-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/qr-api/SOME_PATH");
curl_setopt($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/qr-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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