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jsDelivr vs languagelayer

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

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

jsDelivr vs languagelayer: common questions

Which is more reliable, jsDelivr or languagelayer?

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

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

Can I call jsDelivr and languagelayer from the browser?

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

Are jsDelivr and languagelayer free for commercial use?

jsDelivr has unclear commercial terms, and languagelayer 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.