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CDNJS vs Gcore CDN

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

APICDNJSNEW—Gcore CDNNEW—
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 — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CDNJS vs Gcore CDN: common questions

Which is more reliable, CDNJS or Gcore CDN?

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

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

Can I call CDNJS and Gcore CDN from the browser?

Yes — both CDNJS and Gcore CDN 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 Gcore CDN free for commercial use?

CDNJS has unclear commercial terms, and Gcore CDN 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.