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SEO Score vs Serialif Color

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

APISEO ScoreNEW—Serialif ColorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

SEO Score vs Serialif Color: common questions

Which is more reliable, SEO Score or Serialif Color?

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

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

Can I call SEO Score and Serialif Color from the browser?

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

Are SEO Score and Serialif Color free for commercial use?

SEO Score has unclear commercial terms, and Serialif Color 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.