Catch website tag changes before they go unnoticed

Small, evidence-first monitoring for site owners. See what changed, what we checked, and what we could not verify.

What the monitor does

One ownership-verified hostname and up to 10 manually entered URLs.
Daily checks of HTTP status, canonical, meta robots, X-Robots-Tag and observed hreflang declarations.
Potential changes are checked again at least 10 minutes later before a change email is queued.
30-day check history with raw and resolved evidence. Unknown is not proof a tag was removed.

We read server HTML and HTTP headers. We do not render JavaScript, crawl XML sitemaps, track rankings, guarantee indexing, or diagnose the entire website. Redirects across hostnames or protocols are not followed. Checks honor robots rules and resource limits.

Sign-in preparation only

This domain currently supports invited email sign-in only. Site setup and checks are not enabled here. Do not upload a verification file for this environment.