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Microlink.io vs RestoSignals

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

APIMicrolink.ioDEAD0RestoSignalsREACHABLE100
Uptime · 30d
Uptime · 90d0.0%100%
Uptime · 30d0.0%100%
P50 · ms—748
P95 · ms—748
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseN/A — returns metadata extracted from the URL you pass
Free tierFree tier — no key required (Pro plans need a key)
Rate limitFree tier is rate-limited per day (see pricing)
In directory since2026-07-052026-10-19
operationalpartialdownno data

Microlink.io vs RestoSignals: common questions

Which is more reliable, Microlink.io or RestoSignals?

On our scheduled checks, RestoSignals leads on measured uptime — Microlink.io at 0.0% versus RestoSignals at 100% 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 Microlink.io and RestoSignals need an API key?

Microlink.io needs no key, while RestoSignals requires a free API key. If you want to start calling without signup, reach for Microlink.io first.

Can I call Microlink.io and RestoSignals from the browser?

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

Are Microlink.io and RestoSignals free for commercial use?

Microlink.io has unclear commercial terms, and RestoSignals 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.