What it does
When someone runs the free checker or monitors a page, SchemaSignal fetches that one public URL, much as a browser would. It reads the HTML (and sometimes the page after scripts run) to extract JSON-LD, the title, meta description and social tags. It does not crawl links, submit forms or log in.
What we keep
We store the extracted findings, not the raw HTML. Free-check reports are temporary: tied to a browser session, they expire after 24 hours and are deleted during routine cleanup, with successful results cached for at most 15 minutes. See our privacy policy.
Opt out with robots.txt
The public free checker identifies itself as SchemaSignalBot/1.0. Regular monitoring by signed-in account holders is separate, and this robots.txt opt-out applies to the public free checker only. To disallow the free checker:
User-agent: SchemaSignalBot Disallow: /
Its full user agent is SchemaSignalBot/1.0.
Contact
To report a problem or ask us to stop checking a site, email hello@twentysignals.co.uk with the affected address.