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ReSmush.it vs Songlink / Odesli

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

APIReSmush.itNEW—Songlink / OdesliNEW—
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 limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ReSmush.it vs Songlink / Odesli: common questions

Which is more reliable, ReSmush.it or Songlink / Odesli?

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

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

Can I call ReSmush.it and Songlink / Odesli from the browser?

Neither sends browser-friendly CORS headers reliably, so call ReSmush.it and Songlink / Odesli 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 Songlink / Odesli free for commercial use?

ReSmush.it has unclear commercial terms, and Songlink / Odesli 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.