WHAT DO YOU WANT TO INSPECT?
WEB INSPECTOR · LAB/002
SEE WHAT THE INTERNET
SEES IN YOUR WEBSITE.
DNS · TLS · SECURITY · ACCESSIBILITY · PRIVACY
Paste a URL and we show you how the Internet sees it: DNS, TLS certificate, HTTP response, security headers and, with a real browser, accessibility, cookies and third parties. With evidence and a public methodology, no magic scores.
Low-impact Public Scan: normal requests, like a browser would make. No intrusive testing.
MAIL INSPECTOR · LAB/003
SEE HOW THE INTERNET
SEES YOUR EMAIL.
test-••••••@mailcheck.node249.orgSPF · DKIM · DMARC · ALIGNMENT · PTR · TLS
Send an email to a temporary address and we will show you how the Internet receives it. Coming soon.
GIVE US SOMETHING. WE SHOW YOU WHAT THE INTERNET SEES.
LEARN
- TLS certificates & HTTPSWhat a TLS certificate is, why it expires and how to check your HTTPS is configured correctly.
- Redirect HTTP to HTTPSWhy your site should always redirect http:// to https:// and how to avoid mixed content.
- HSTS (Strict-Transport-Security)What HSTS is, which max-age to use and how to enable it without breaking your site.
- Content-Security-Policy (CSP)What a CSP is, why unsafe-inline weakens it and how to start with a restrictive policy.
- Security headersThe basic HTTP security headers: nosniff, Referrer-Policy, Permissions-Policy and hiding the server version.
- Web accessibilityWhat automated accessibility tests (axe-core) detect, what they do not, and the most common mistakes.
- Cookies & consentWhich cookies and trackers a website loads before consent and why it matters.
- Third-party requestsWhich external services your website contacts when loading, why you should know them and how to reduce them.
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