Not always — some flagged items, like a missing security header, are best practice improvements rather than urgent problems. Use the notes and recommendations to prioritize what matters most for your site.
Free Website Health Tool
Domain Health Checker
Run a full health check on any domain — DNS, SSL on both the bare and www domain, server & security headers, page size, blacklist status, and basic SEO — summarized into one clear health score.
- ✔ DNS & SSL check
- ✔ Security headers audit
- ✔ Blacklist & page size check
- ✔ Basic SEO check
One Report, Every Signal That Matters
A healthy website isn't just "up" — it needs valid SSL on both the bare domain and www, sensible security headers, a reasonable page weight, a clean IP reputation, and basic on-page SEO in place. Checking each of these separately across different tools is slow, so this combines them into a single scored report.
This is a lightweight diagnostic check, not a substitute for a full security audit or professional performance review — but it will surface the most common, highest-impact issues in seconds.
How It Works
1. Enter a Domain
Type the domain and run the check — no login required.
2. We Check Everything
DNS, SSL, headers, page size, blacklists, and SEO basics, all in one pass.
3. Get a Health Score
See an overall grade plus a breakdown of exactly what needs attention.
4. Fix What's Flagged
Follow the tailored recommendations to resolve issues we found.
This runs a real check from our server — connecting to your domain over HTTPS/HTTP,
reading its SSL certificate, headers, and homepage, and querying public DNS blacklists
for its IP. The page reloads to show results. Nothing checked here is stored.
Website Health
What We Check & Why
SSL on Both Hosts
Many sites secure the bare domain but forget www — or vice versa, breaking half their traffic.
Security Headers
Missing headers like HSTS or CSP leave a site more exposed to common attacks.
Page Size & Speed
Heavy pages and slow servers directly hurt both visitor experience and SEO.
Blacklist Status
A blacklisted IP can silently block emails and tank deliverability without warning.
FAQsDomain Health Checker
Is a low score always something to worry about?
Why check SSL on both the bare domain and www?
Browsers treat example.com and www.example.com as different hosts. If only one has a valid certificate, visitors reaching the other version will see a security warning.
What do the blacklist results mean?
These are public DNS-based blacklists (DNSBLs) mail servers and security tools commonly check. Being listed can cause outgoing email to be rejected or marked as spam, even if the website itself is unaffected.
Is my domain data uploaded anywhere?
The check runs from our server since it needs to connect to your domain directly (SSL handshake, HTTP request, DNS/blacklist queries). Results are shown to you and are not stored.