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