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Fake JSON API vs Gyazo

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

APIFake JSON APINEW—GyazoNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Fake JSON API vs Gyazo: common questions

Which is more reliable, Fake JSON API or Gyazo?

On our scheduled checks, Gyazo leads on measured uptime — Fake JSON API at —% versus Gyazo 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 Fake JSON API and Gyazo need an API key?

Fake JSON API needs no key, while Gyazo requires a free API key. If you want to start calling without signup, reach for Fake JSON API first.

Can I call Fake JSON API and Gyazo from the browser?

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

Are Fake JSON API and Gyazo free for commercial use?

Fake JSON API has unclear commercial terms, and Gyazo 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.