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CDNJS vs Sheetsu

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

APICDNJSNEW—SheetsuNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open, no keyFree tier — key may be required
Rate limitUnpublished90 req/window · 89 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

CDNJS vs Sheetsu: common questions

Which is more reliable, CDNJS or Sheetsu?

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

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

Can I call CDNJS and Sheetsu from the browser?

Yes — both CDNJS and Sheetsu send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are CDNJS and Sheetsu free for commercial use?

CDNJS has unclear commercial terms, and Sheetsu 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.