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