ReSmush.it vs The Color API

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
Authnonenone
CORSyesyes
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseN/A — optimization service, not a datasetUnverified
Free tierFree; per-image size cap applies (see docs)Free — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ReSmush.it vs The Color API: common questions

Which is more reliable, ReSmush.it or The Color API?

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

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

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

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

Are ReSmush.it and The Color API free for commercial use?

ReSmush.it has unclear commercial terms, and The Color API 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.