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SEO Score vs Shotstack

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

APISEO ScoreNEW—ShotstackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnoyes
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

SEO Score vs Shotstack: common questions

Which is more reliable, SEO Score or Shotstack?

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

Both ask you to authenticate — SEO Score uses an API key and Shotstack 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 SEO Score and Shotstack from the browser?

Only Shotstack 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 SEO Score and Shotstack free for commercial use?

SEO Score has unclear commercial terms, and Shotstack 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.