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Microlink.io vs Shields

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

APIMicrolink.ioNEW—ShieldsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseN/A — returns metadata extracted from the URL you passUnverified
Free tierFree tier — no key required (Pro plans need a key)Free — limits not published
Rate limitFree tier is rate-limited per day (see pricing)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Microlink.io vs Shields: common questions

Which is more reliable, Microlink.io or Shields?

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

Neither needs a paid key — Microlink.io is callable with no signup, and Shields is callable with no signup. Both are quick to prototype with; rate limits still apply.

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

Yes — both Microlink.io and Shields send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Microlink.io and Shields free for commercial use?

Microlink.io has unclear commercial terms, and Shields 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.