Tool guide
Website Security Check
A website security check should give you a useful first look at the public signals browsers see before someone uses your site.
What This Check Covers
Start with the basics that can be checked from the outside: security headers, HTTPS certificate health, redirect behavior, and public DNS records.
These checks will not inspect your codebase or database, but they can catch common production issues that affect trust, loading, and browser protections.
What To Fix First
Fix broken HTTPS, expired certificates, and redirect loops before tightening headers. A secure policy is only useful when users can reliably reach the right page.
After that, review missing security headers and add the lower-risk baseline before rolling out strict CSP or HSTS preload.
When To Recheck
Recheck after changing your CDN, hosting provider, DNS records, SSL certificate, framework middleware, or deployment platform.
For important public sites, a quick check after major releases can catch delivery issues before customers report them.
Common questions
Is this a complete website security audit?
No. It is a public-facing baseline check. A full audit also reviews application code, authentication, infrastructure, dependencies, and access controls.
What can be checked without logging in?
Public headers, redirects, SSL certificate details, DNS records, compression, and protocol support can usually be checked from the outside.
Should I check staging or production?
Check production when you want the real browser-facing result. Staging is useful before release, but it may not share the same CDN or DNS setup.
What is the fastest first check?
Use Domain Check first, then open the focused tool for anything that needs a closer look.