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Kroki vs SEO Score

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

APIKrokiNEW—SEO ScoreNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Kroki vs SEO Score: common questions

Which is more reliable, Kroki or SEO Score?

On our scheduled checks, SEO Score leads on measured uptime — Kroki 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 Kroki and SEO Score need an API key?

Kroki needs no key, while SEO Score requires a free API key. If you want to start calling without signup, reach for Kroki first.

Can I call Kroki and SEO Score from the browser?

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

Are Kroki and SEO Score free for commercial use?

Kroki 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.