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Adoptium vs OCR.Space

Same instrument, two spec sheets — measured, not claimed.

APIAdoptiumNEW—OCR.SpaceREACHABLE—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Adoptium vs OCR.Space: common questions

Which is more reliable, Adoptium or OCR.Space?

On our scheduled checks, OCR.Space leads on measured uptime — Adoptium at —% versus OCR.Space at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Adoptium and OCR.Space need an API key?

Adoptium needs no key, while OCR.Space requires a free API key. If you want to start calling without signup, reach for Adoptium first.

Can I call Adoptium and OCR.Space from the browser?

Yes — both Adoptium and OCR.Space send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Adoptium and OCR.Space free for commercial use?

Adoptium has unclear commercial terms, and OCR.Space has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.