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JSONPlaceholder vs UUID Generator

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

APIJSONPlaceholderHEALTHY95UUID GeneratorHEALTHY98
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms401220
P95 · ms1096837
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limit1000 req/window · 999 remaining · resets 178350937860 req/window · 59 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

JSONPlaceholder vs UUID Generator: common questions

Which is more reliable, JSONPlaceholder or UUID Generator?

Both are neck-and-neck — JSONPlaceholder and UUID Generator each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, JSONPlaceholder or UUID Generator?

UUID Generator has the lower median latency in our checks — JSONPlaceholder responds in 401 ms versus UUID Generator at 220 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do JSONPlaceholder and UUID Generator need an API key?

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

Can I call JSONPlaceholder and UUID Generator from the browser?

Yes — both JSONPlaceholder and UUID Generator 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 JSONPlaceholder and UUID Generator free for commercial use?

JSONPlaceholder has unclear commercial terms, and UUID Generator 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.