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OCR.Space vs staffSign

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

APIOCR.SpaceDEAD0staffSignDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OCR.Space vs staffSign: common questions

Which is more reliable, OCR.Space or staffSign?

Both are neck-and-neck — OCR.Space and staffSign each measure 0.0% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Do OCR.Space and staffSign need an API key?

Both ask you to authenticate — OCR.Space uses an API key and staffSign uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

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

Only OCR.Space is browser-friendly — it returns CORS headers over HTTPS. staffSign needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are OCR.Space and staffSign free for commercial use?

OCR.Space has unclear commercial terms, and staffSign 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.