Free tools

The same engine’s public face: test.sitetr.com scans any domain free, no account — 22 checks, one score, honest uncertainty included.

The domain scanner

Type a domain, get the full intelligence report. Every check shows its evidence, and where a check genuinely can’t know (DNS-over-HTTPS ambiguity, a quiet blocklist), it says so instead of guessing — the same evidence contract the paid engine follows.

The 22 checks

Scoring

Checks are weighted into a 0–100 score with a tier — Excellent, Strong, Moderate, Weak, Critical — and a missing HSTS and a missing sitemap don’t cost the same. Rescans are cheap, and the timeline keeps each domain’s scan history so improvement (or decay) is visible over time.

Share, badge, leaderboard

Every report has a share card for social, an embeddable badge you can put on your own site, a leaderboard of scanned domains, and a watch list you can join for domains you care about — notification delivery is still being wired up; the platform’s monitoring does the full job today.

More free tools

Small, unauthenticated utilities on the open API: a redirect chain checker, keyword density analyzer, sitemap fetcher, and a llms.txt generator. This site practices what the engine preaches — sitetr.com’s own llms.txt and llms-full.txt are maintained with the same tooling.