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ConvertHub API vs SEO Score

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

APIConvertHub APINEW—SEO ScoreNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ConvertHub API vs SEO Score: common questions

Which is more reliable, ConvertHub API or SEO Score?

On our scheduled checks, SEO Score leads on measured uptime — ConvertHub API at —% versus SEO Score 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 ConvertHub API and SEO Score need an API key?

Both ask you to authenticate — ConvertHub API uses an API key and SEO Score uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call ConvertHub API and SEO Score from the browser?

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

Are ConvertHub API and SEO Score free for commercial use?

ConvertHub API has unclear commercial terms, and SEO Score 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.