Free Website Tools
Diagnose, check, and monitor your websites — no signup required.
Full Website Audit
Scan SSL, DNS, security headers, open ports, subdomains, email, and more — complete audit in 30 seconds.
SSL Certificate Checker
Check SSL/TLS certificate expiry, issuer, and chain validity for any domain.
DNS Lookup
Query A, AAAA, MX, NS, TXT, CNAME, SOA, and CAA records for any domain.
WHOIS & Domain Expiry
Look up registrar, registration date, expiry date, and days remaining.
Security Headers Checker
Scan 8 security headers (HSTS, CSP, X-Frame-Options, ...) and get an A-F grade.
HTTP Status Checker
Check HTTP status codes, response time, server headers, and redirect chains.
Ping / Latency Test
Ping any host and measure round-trip time, min/max latency, and packet loss.
Port Checker
Check if a TCP port is open or closed. Quick-select SSH, HTTP, MySQL, Redis, and more.
Broken Link Checker
Find broken links and their HTTP status codes across your site.
Mixed Content Checker
Detect insecure HTTP resources loading on your HTTPS pages.
Domain Expiry Checker
See a domain expiration date, days remaining, and registrar.
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