Free DevOps & SEO Tools
Powerful online tools to help you analyze, debug, and monitor your web infrastructure.
SSL Certificate Checker
Check SSL certificate validity, expiration, and security configuration for any domain.
DNS Lookup
Query DNS records for any domain: A, AAAA, MX, TXT, NS, CNAME, and more.
HTTP Headers Analyzer
Analyze HTTP response headers for security, caching, and best practices.
Website Status Checker
Check if a website is up or down and measure response time.
SLA Calculator
Calculate allowed downtime based on your SLA percentage target.
Subdomain Finder
Discover subdomains using certificate transparency logs and other sources.
Online Ping Test
Test network connectivity and measure latency to any host.
Online Port Scanner
Check if specific ports are open on any host.
WHOIS Lookup
Query domain registration information and ownership details.
Uptime Calculator
Calculate uptime percentage from downtime incidents.
Email Security Checker
Comprehensive email authentication analysis: SPF, DKIM, DMARC, MTA-STS, BIMI, and 50+ blacklists.
Need continuous monitoring?
Our free tools are great for one-time checks. For 24/7 monitoring with alerts, try WizStatus.