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Chocomilk API vs ReSmush.it

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

APIChocomilk APINEW—ReSmush.itNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedN/A — optimization service, not a dataset
Free tierFree — limits not publishedFree; per-image size cap applies (see docs)
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Chocomilk API vs ReSmush.it: common questions

Which is more reliable, Chocomilk API or ReSmush.it?

On our scheduled checks, ReSmush.it leads on measured uptime — Chocomilk API at —% versus ReSmush.it 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 Chocomilk API and ReSmush.it need an API key?

Neither needs a paid key — Chocomilk API is callable with no signup, and ReSmush.it is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Chocomilk API and ReSmush.it from the browser?

Neither sends browser-friendly CORS headers reliably, so call Chocomilk API and ReSmush.it from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Chocomilk API and ReSmush.it free for commercial use?

Chocomilk API has unclear commercial terms, and ReSmush.it 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.