Adoptium vs jsDelivr
Same instrument, two spec sheets — measured, not claimed.
Adoptium vs jsDelivr: common questions
Which is more reliable, Adoptium or jsDelivr?
On our scheduled checks, jsDelivr leads on measured uptime — Adoptium 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 Adoptium and jsDelivr need an API key?
Neither needs a paid key — Adoptium is callable with no signup, and jsDelivr is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Adoptium and jsDelivr from the browser?
Yes — both Adoptium and jsDelivr 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 Adoptium and jsDelivr free for commercial use?
Adoptium 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.