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API · /ocr-api

OCR API

healthy 4,652 Subscribers

Extract text from images with optical character recognition in eight languages (English, German, French, Spanish, Italian, Portuguese, Dutch and Turkish). Get the full recognised text with an average confidence score and word and line counts, or word-level results where every word carries its own confidence and bounding box for layout-aware processing. Supply an image by public URL, base64 or a raw binary request body; large images are downscaled automatically before recognition to keep responses fast, and a warm engine keeps latency low after start-up. Pure server-side computation (Tesseract, no third-party upstream, no per-call cloud cost). Ideal for digitising documents and receipts, reading text from photos and screenshots, accessibility, and data-entry automation.

#ocr #image-to-text #text-recognition #document #tesseract #extraction #dev-tools
api.oanor.com/ocr-api
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Machine-readable spec so AI agents can integrate this API.

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

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

OCR API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
78 ms
Server probes · 24h
Subscribers
4,652
active
Total calls
57
last 7 days
status Full status page → · 9 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 2,000 calls / month
  • 1 requests / second
  • Hard cap (429 above quota, no overage)
  • 2,000 calls/month, 1 req/s
  • Text recognition in 8 languages with word boxes
  • No credit card
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Basic

€12.50 /month

  • 40,000 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 40,000 requests/month, 3 req/s
  • Full text + word-level confidence & bounding boxes
  • Commercial use included
  • Email support
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Pro

€34.00 /month

  • 250,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 250,000 requests/month, 8 req/s
  • High throughput for document & receipt pipelines
  • Priority email support
  • Commercial use allowed
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Mega

€89.00 /month

  • 1,200,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,200,000 requests/month, 20 req/s
  • Highest throughput for production digitisation at scale
  • Priority support
  • Commercial use allowed
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api.oanor.com/pdftext-api

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Generate PDF documents from text on the fly — with an optional bold title, page size (A4, Letter or Legal) and font size. Returns a base64 PDF or a raw downloadable file. Great for invoices, reports, receipts and tickets.

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Coffee Brewing API

Coffee brewing maths as an API, computed locally and deterministically. The ratio endpoint works out a brew recipe from any two of the coffee dose, the water and the brew ratio — water = coffee × ratio — and reports the third value, the ratio as 1:N, the number of cups and whether the recipe sits around the SCA "golden ratio" of about 1:16–1:17. The espresso endpoint does the same for espresso from any two of the dose, the yield and the brew ratio (yield = dose × brew ratio), labelling the shot ristretto, normale or lungo. The extraction endpoint computes the extraction yield, EY% = (beverage mass × TDS%) ÷ dose, from the dose, the brewed beverage mass (or the water, estimating the mass the grounds retain) and the measured total dissolved solids, then classifies the brew as under-extracted, ideal or over-extracted and weak through very strong against the SCA brewing control chart. Masses are in grams, water in grams or millilitres. Everything is computed locally and deterministically, so it is instant and private. Ideal for specialty-coffee, café, brewing-scale and recipe app developers, pour-over and espresso tools, and barista training. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is coffee brewing maths; for cooking-unit conversions use a cooking API and for caffeine intake use a caffeine API.

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Quiz & Trivia API

A ready-to-use trivia engine with more than 44,000 multiple-choice questions across 20 categories — animals, brain teasers, celebrities, entertainment, kids, general knowledge, geography, history, hobbies, humanities, literature, movies, music, people, religion, science & technology, sports, television, video games and world. Pull a random question or a batch (optionally filtered by category, with the answer hidden for gameplay and the options shuffled), fetch a specific question by id, verify a submitted answer, search questions by keyword, and list every category with its question count. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side data (no third-party upstream), so responses are instant and always available. Ideal for quiz and trivia games, pub-quiz and party apps, learning tools, chatbots and Discord/Slack bots.

api.oanor.com/quiz-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for OCR API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call OCR API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for OCR 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 OCR API cost?
OCR API has a free tier with 100 calls / month. Paid plans start at €12.50 / 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 OCR API GDPR-compliant?
All requests to OCR 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/ocr-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/ocr-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/ocr-api/SOME_PATH");
curl_setopt($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/ocr-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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