Validate the schema.org JSON-LD of any URL or pasted markup and get coded issues, rich-result checks, a grade and a score.

Find a site's Web App Manifest and get a JSON report with coded issues, an A+ to F grade and a Chrome installability verdict with blockers.

Validate a domain's security.txt for Contact, Expires, syntax and expiry, with coded issues as JSON. ads.txt is checked too.

Check the cookies a URL sets for missing Secure, HttpOnly and SameSite flags and RFC violations, with coded issues and a grade.

Check any URL's Cache-Control, Expires and ETag headers and get a cacheability verdict, freshness lifetime and misconfiguration list as JSON.

Paste raw email headers and get the delivery path plus SPF, DKIM and DMARC results as clean JSON.

Audit any domain's robots.txt and sitemap.xml in one call: crawl rules, sitemap URL counts and detected issues as clean JSON.

Check any URL's CORS policy in one call: simple request and preflight headers, plus detected misconfigurations as clean JSON.

Check any website's HTTP security headers and get an instant A+ to F grade with a 100-point score.

Look up DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, PTR) for any domain via Cloudflare DNS-over-HTTPS — verify SPF/DKIM/DMARC in one call.

RDAP/WHOIS lookup for any IPv4 or IPv6 address — registry, network range, organization and country as clean JSON.

Validate email syntax, MX records, and disposable domains via a single fast, cached API endpoint.

Extract summary, decisions, and action items from meeting transcripts using AI. Supports Korean and English input.

Extract title, description, image, and favicon from any URL in one fast, cached API call.

Look up domain registration details (registrar, dates, name servers) via RDAP, the official successor to WHOIS.