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Screenshotlayer vs Sunor

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

APIScreenshotlayerNEW—SunorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
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 Sunor: common questions

Which is more reliable, Screenshotlayer or Sunor?

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

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

Can I call Screenshotlayer and Sunor from the browser?

Neither sends browser-friendly CORS headers reliably, so call Screenshotlayer and Sunor from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Screenshotlayer and Sunor free for commercial use?

Screenshotlayer has unclear commercial terms, and Sunor 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.