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Cutt.ly vs jsDelivr

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

APICutt.lyNEW—jsDelivrNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree, no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Cutt.ly vs jsDelivr: common questions

Which is more reliable, Cutt.ly or jsDelivr?

On our scheduled checks, jsDelivr leads on measured uptime — Cutt.ly at —% versus jsDelivr 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 Cutt.ly and jsDelivr need an API key?

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

Can I call Cutt.ly and jsDelivr from the browser?

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

Are Cutt.ly and jsDelivr free for commercial use?

Cutt.ly has unclear commercial terms, and jsDelivr 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.