What does this free HTTP status checker test?

This tool tests the HTTP response code (e.g. 200 OK, 301 Redirect, 404 Not Found, 500 Server Error), measures server round-trip latency in milliseconds, verifies TLS/SSL certificate encryption, and estimates remaining days before SSL expiration.

How do I export results to Google Sheets?

After running a diagnostic check, click the 'Export to Google Sheets (.csv)' button. You will receive a clean CSV diagnostic log and access to the official SheetsDuty Google Sheet Starter Template.

Can I automate these checks every minute?

Yes! With the SheetsDuty Google Workspace Add-on, you can automate these checks every minute for up to 40 URLs in your spreadsheet with real-time email alerts.

Free HTTP Status & Website SSL Expiration Checker

Free HTTP Status & SSL Expiration Checker

Diagnose any website endpoint in real time. Inspect HTTP response status codes, measure millisecond server latency, verify SSL certificate health, and export reports directly to Google Sheets in 1 click.

Quick test:

Executing Global Diagnostic Scan...

Checking HTTP headers, response latency & TLS certificate parameters

🌐 https://example.com

200 OK

Response Time

118 ms

SSL Security

Valid (TLS 1.3)

Protocol

HTTP/2

Content Type

text/html

🔒 SSL Certificate Expiration Status

74 Days Remaining

⚡ Automate 24/7 Monitoring with SheetsDuty

Manual vs Automated

Why Single Checks Aren't Enough

Websites crash at 3 AM. Don't rely on manual tests when you can automate 24/7 surveillance in Google Sheets.

❌ Manual Web Checking

⚠️ You only know your site is down when you remember to test it or a customer complains.

⚠️ SSL certificates expire silently without automated warning alerts.

⚠️ Transient latency spikes and error blips go unrecorded.

⚡ Automated SheetsDuty Monitoring

✅ Continuous 1-minute background health checks run 24/7 automatically.

✅ Instant multi-email notifications arrive the moment a target fails.

✅ Complete incident audit logs and latency trends stored forever in your Google Sheet.

Tool FAQ

Frequently Asked Questions

The tool measures full HTTP round-trip latency including DNS resolution, TCP handshake, TLS negotiation, and initial server time-to-first-byte (TTFB).

If an SSL certificate has fewer than 15 days remaining, the status indicator turns red. When using the SheetsDuty Google Workspace Add-on, you receive proactive alert notifications before expiration occurs.

SheetsDuty provides a 100% Free Tier for up to 5 monitors. Paid plans start at just $9/month for Pro Solo and $24/month for Pro Team (40 monitors and 5 seats).

Your Diagnostic Report is Ready!

Why Single Checks Aren't Enough

Frequently Asked Questions

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