passive security & quality audit for sites built with ai

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Terms of use

Last updated: September 2026. Plat.one is operated by Semalt LP — see About for company details.

Only scan what you're authorized to

By checking the consent box before a scan, you confirm you own the target site or are authorized by its owner to test it. We log the time a scan was requested. Don't use Plat.one to test sites you have no authorization for.

What the service is

Plat.one runs passive, non-destructive checks against publicly served content, plus one layer of headless-browser rendering to measure things like contrast and Core Web Vitals. It never logs in, submits forms, or writes anything to the target site. It's provided free, as a best-effort tool — see the FAQ on the homepage for exactly what is and isn't checked.

No warranty

Plat.one is provided "as is," without warranty of any kind. A clean scan result is not a security certification — it reflects only what these specific checks can detect from the outside, passively, at the time of the scan. We're not liable for actions taken (or not taken) based on a report, or for downtime, inaccuracy, or data loss.

Fair use

We reserve the right to rate-limit or block requests that look automated/abusive, and to remove report pages at our discretion (e.g. on a removal request — see Privacy policy).

Governing law

These terms are governed by the laws of England and Wales. Questions: see the Contact section on our About page.