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Screenshotlayer vs Sirv

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

APIScreenshotlayerNEW—SirvNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
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

Screenshotlayer vs Sirv: common questions

Which is more reliable, Screenshotlayer or Sirv?

On our scheduled checks, Sirv leads on measured uptime — Screenshotlayer at —% versus Sirv 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 Screenshotlayer and Sirv need an API key?

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

Can I call Screenshotlayer and Sirv from the browser?

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

Are Screenshotlayer and Sirv free for commercial use?

Screenshotlayer has unclear commercial terms, and Sirv 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.