Upsonar - Website Monitor

Check website availability, SSL certificates & domain expiry across 9 global locations. Fast, privacy-focused monitoring.

Upsonar - Website Monitor Check website availability, SSL certificates, and domain expiry across 9 global locations. Essential for web developers, site owners, and IT professionals ensuring worldwide accessibility and security. Key Features: • HTTP availability checks from 9 geographically diverse points • External dependency analysis - detect broken CDNs, scripts, fonts • SSL certificate monitoring - check expiry dates and validity • Domain WHOIS lookup - monitor domain expiration • Real response time measurements in milliseconds • Clean, modern interface with expandable details • One-click check for your current tab • Remembers your preferred regions and check type • Privacy-focused: No personal data stored Three Check Types: 1. HTTP Check - Verify website and its external dependencies (CDNs, scripts, stylesheets) across multiple regions 2. SSL Check - Monitor SSL certificate expiry, issuer, security score, and cipher suites 3. Domain Check - Track domain registration expiry, registrar, and nameservers Why Choose Upsonar? ✓ True global perspective - check from 9 worldwide locations ✓ Dependency monitoring - catch issues when third-party CDNs or scripts fail ✓ Never miss SSL certificate renewal deadlines ✓ Stay ahead of domain expiration issues ✓ Identify region-specific problems quickly ✓ Privacy-first: All checks are real-time, nothing stored How It Works: 1. Enter your website URL or use the current tab 2. Choose check type: HTTP, SSL, or Domain 3. For HTTP checks, select up to 9 worldwide regions 4. Click "Check" and get instant results 5. Expand any result for detailed information Privacy & Security: • No personal data stored • Checks performed from 9 diverse geographical points • All data processed in real-time, not saved after your session Want 24/7 monitoring with alerts? Visit upsonar.io - free tier available! Powered by Upsonar (upsonar.io)