See what your site looks like from the outside
Paste a domain and we'll look at what a visitor, a search engine, and a mail server all see — certificate, security headers, DNS and email records, and the page itself. Takes about thirty seconds, no account needed.
We check what's publicly visible from our own servers: the certificate, response headers, DNS and email records, and the page's own HTML. We don't fetch anything the page links to, and this doesn't check the site against any particular standard.
Certificate & headers
TLS certificate health and the response headers that control how browsers treat the site.
DNS & email
Nameserver setup and the SPF/DMARC records that stop spoofed email from the domain.
Page & registration
Title, metadata, static accessibility checks, and the domain's own registration record.
Ten checks, one report
- Connectivity
- Whether the site answers over HTTP and HTTPS, and whether plain HTTP moves to a secure connection.
- SSL certificate
- The certificate presented on the secure connection — who issued it, how it's signed, and how long it has left.
- Security headers
- Response headers that control how browsers treat the site — HSTS, a content security policy, and a few others.
- DNS
- How the domain resolves, and whether it has more than one nameserver to fall back on.
- Email authentication
- SPF and DMARC records, which are what stop other people from sending email that claims to be from this domain.
- Search & metadata
- Title, description, canonical tag, and the other signals search engines read off the page.
- Performance
- One server-side timing measurement, from one location, just now — not a synthetic or real-user performance test.
- Accessibility
- Static checks over the page's raw HTML — landmarks, alt text, heading order. This reflects what's readable in the markup, not a full evaluation of how the page works for assistive technology.
- Links & resources
- What the page declares about its own links and scripts. We never fetch a linked page, so we can't say whether those links work.
- Domain registration
- Registration status and expiry from the domain's public registry record.