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API · /base45-api

Base45 API

healthy 3,079 Subscribers

Encode and decode Base45 (RFC 9285) — the compact binary-to-text encoding designed to pack densely into the alphanumeric mode of QR codes, best known as the carrier for the EU Digital COVID Certificate. The encode endpoint turns text (UTF-8) or raw bytes given as hex into a Base45 string; the decode endpoint turns a Base45 string back into bytes, returned as hex and — when the bytes are valid UTF-8 — as text. It uses the official 45-character alphabet (0-9, A-Z and a handful of symbols), packs two bytes into three characters (or one byte into two), and validates length and value ranges strictly so malformed input is rejected rather than silently mangled. Everything is computed locally and deterministically, so it is instant and private. Ideal for QR-code payloads, digital health and travel certificates, alphanumeric-mode encoders, and any binary data that must survive an uppercase-only channel. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is Base45 specifically; for base64, base32, hex, URL or HTML entity encoding use a general encoding API.

#base45 #rfc9285 #qr-code #encoding #binary-to-text #developer-tools
api.oanor.com/base45-api
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Machine-readable spec so AI agents can integrate this API.

/api/base45-api/openapi.json
/api/base45-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
3,079
active
Total calls
33
last 7 days
status Full status page → · 15 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 5,235 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 5,235 calls/month
  • 2 req/sec
  • Encode + decode
  • No credit card
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Starter

€6.75 /month

  • 14,750 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 14.75k calls/month
  • 8 req/sec
  • Text + hex bytes
  • Email support
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Pro

€26.65 /month

  • 198,500 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 198.5k calls/month
  • 20 req/sec
  • QR / health-cert pipelines
  • Priority support
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Mega

€64.65 /month

  • 1,035,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.035M calls/month
  • 50 req/sec
  • Platform scale
  • Dedicated SLA
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api.oanor.com/vcard-api

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

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Generate branded QR codes with a centre logo overlay, custom foreground and background colors, chosen size and error-correction level, as PNG or SVG. When a logo is supplied the error-correction level is raised automatically so the code stays scannable, and the logo is placed on a rounded white plate in the centre. Includes one-call helpers that build the correct payload for you: a Wi-Fi-join QR (SSID, password, encryption, hidden), a vCard contact QR (name, phone, email, organisation, title, URL, address) and a batch endpoint that returns up to 100 QR codes in a single request. Supply a logo by public URL, base64 or a raw binary body; receive results as base64 PNG/SVG JSON or, with raw=1, the raw image bytes. Pure server-side rendering (qrcode + sharp), no third-party upstream. Ideal for marketing and packaging, business cards and events, restaurant menus, Wi-Fi sharing and app onboarding.

api.oanor.com/qrlogo-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 Base45 API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Base45 API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Base45 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 Base45 API cost?
Base45 API has a free tier with 100 calls / month. Paid plans start at €6.75 / 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 Base45 API GDPR-compliant?
All requests to Base45 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/base45-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/base45-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/base45-api/SOME_PATH");
curl_setopt($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/base45-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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