Quick checks for the things that quietly break sites.
Paste a domain. Get an answer. No login, no SDK, nothing to install. We notice things from the outside, the way browsers and crawlers do.
SSL & Domain Expiry Checker
LiveInspect a domain’s certificate over a live TLS handshake and read its registration from RDAP in one page — validity, expiry, chain trust, hostname match, SAN coverage on the cert side; registrar, registration expiry, nameservers, status locks on the domain side. Two clocks, one page.
Check a domainEmail DNS checker
LiveMX, SPF, DKIM, DMARC — plus MTA-STS, TLS-RPT, BIMI — in one observational report. Explains what each record actually does, in plain English.
Check a domainDNS record checker
SoonA, AAAA, CNAME, MX, TXT. Multi-region × multi-resolver consistency — catches drift the registrar quietly introduced.
Security header checker
SoonCSP, HSTS, X-Frame-Options, Referrer-Policy, Permissions-Policy. Reads the whole response, not just the homepage.
More tools follow the same shape. Each one is a single page that takes a domain and returns an answer in HTML, machine-readable Markdown, and JSON.