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Image to Link vs staffSign

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

APIImage to LinkNEW—staffSignNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Image to Link vs staffSign: common questions

Which is more reliable, Image to Link or staffSign?

On our scheduled checks, staffSign leads on measured uptime — Image to Link at —% versus staffSign 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 Image to Link and staffSign need an API key?

Image to Link needs no key, while staffSign requires a free API key. If you want to start calling without signup, reach for Image to Link first.

Can I call Image to Link and staffSign from the browser?

Only Image to Link 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 Image to Link and staffSign free for commercial use?

Image to Link 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.