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CDNJS vs Screenshotbase

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

APICDNJSHEALTHY98ScreenshotbaseDEAD0
Uptime · 30d
Uptime · 90d100%0.0%
Uptime · 30d100%0.0%
P50 · ms155—
P95 · ms936—
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open, no keyFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CDNJS vs Screenshotbase: common questions

Which is more reliable, CDNJS or Screenshotbase?

On our scheduled checks, CDNJS leads on measured uptime — CDNJS at 100% versus Screenshotbase at 0.0% 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 CDNJS and Screenshotbase need an API key?

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

Can I call CDNJS and Screenshotbase from the browser?

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

Are CDNJS and Screenshotbase free for commercial use?

CDNJS has unclear commercial terms, and Screenshotbase 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.