ChartLyrics vs ReSmush.it

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
Authnonenone
CORSunknownyes
HTTPSnono
Card requirednono
Commercial useunclearunclear
Data licenseUnlicensed lyrics dataN/A — optimization service, not a dataset
Free tierWas: unlimitedFree; per-image size cap applies (see docs)
Rate limitUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

ChartLyrics vs ReSmush.it: common questions

Which is more reliable, ChartLyrics or ReSmush.it?

On our scheduled checks, ReSmush.it leads on measured uptime — ChartLyrics 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 ChartLyrics and ReSmush.it need an API key?

Neither needs a paid key — ChartLyrics 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 ChartLyrics and ReSmush.it from the browser?

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

ChartLyrics 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.