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ReSmush.it vs Wallhaven

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

APIReSmush.itNEW—WallhavenNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseN/A — optimization service, not a datasetUnverified
Free tierFree; per-image size cap applies (see docs)Free tier — key may be required
Rate limitUnpublished45 req/window · 44 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

ReSmush.it vs Wallhaven: common questions

Which is more reliable, ReSmush.it or Wallhaven?

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

ReSmush.it needs no key, while Wallhaven requires a free API key. If you want to start calling without signup, reach for ReSmush.it first.

Can I call ReSmush.it and Wallhaven from the browser?

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

Are ReSmush.it and Wallhaven free for commercial use?

ReSmush.it has unclear commercial terms, and Wallhaven 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.