Domain Authority Checker
Scan any domain for SEO trust signals — HTTPS, on-page tags, robots.txt, Open PageRank, and Wayback history.
Server-assisted scan — uses public data sources
Scan a domain
Enter a domain or homepage URL to estimate authority from public signals.
Public signals only
Open PageRank, robots.txt, sitemap hints, and homepage on-page SEO — no proprietary Moz/Ahrefs APIs.
Actionable breakdown
See which signals help or hurt your estimated score with per-factor detail.
Competitor research
Compare domains before outreach, guest posts, or link building.
About Domain Authority Checker
Domain authority estimates how likely a site is to rank based on trust and quality signals. FileShot combines Open PageRank data with on-page checks (title, meta description, H1), technical SEO (HTTPS, robots.txt, sitemap), and archive history.
This is an educational estimate — not a replacement for professional SEO suites. Use it to spot quick wins and benchmark competitors.
Frequently asked questions
Is this the same as Moz DA?
No. This score blends public signals; Moz uses its own link index.
Do I need an API key?
No. Scans use free public endpoints.
Does a scan use quota?
Yes — one scan per daily tool use.