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Image to Link vs serpstack

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

APIImage to LinkNEW—serpstackNEW—
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 — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Image to Link vs serpstack: common questions

Which is more reliable, Image to Link or serpstack?

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

Image to Link needs no key, while serpstack 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 serpstack from the browser?

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

Are Image to Link and serpstack free for commercial use?

Image to Link has unclear commercial terms, and serpstack 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.