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CDNJS vs Spoo.me

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

APICDNJSNEW—Spoo.meNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open, no keyFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CDNJS vs Spoo.me: common questions

Which is more reliable, CDNJS or Spoo.me?

On our scheduled checks, Spoo.me leads on measured uptime — CDNJS at —% versus Spoo.me 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 CDNJS and Spoo.me need an API key?

Neither needs a paid key — CDNJS is callable with no signup, and Spoo.me is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call CDNJS and Spoo.me from the browser?

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

Are CDNJS and Spoo.me free for commercial use?

CDNJS has unclear commercial terms, and Spoo.me 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.