Free Tools
Free tools for checking your website.
Practical utilities for SSL certificates, DNS records, HTTP responses, response time, and uptime figures. Each tool is marked with its current status.
The tools
Tools marked “Coming soon” or “Planned” cannot be used yet.
- SecurityAvailable
SSL Certificate Checker
Inspect certificate expiration, issuer, and other relevant TLS certificate information.Open the tool - DNSAvailable
DNS Lookup
Look up public DNS records and understand how a domain resolves.Open the tool - HTTPAvailable
HTTP Status Checker
Check the HTTP status returned by a URL.Open the tool - HTTPAvailable
Response Time Checker
Measure how long an HTTP request takes.Open the tool - HTTPAvailable
HTTP Headers Checker
Inspect HTTP response headers for diagnostic information.Open the tool - AvailabilityAvailable
Uptime Calculator
Convert uptime percentages into allowed downtime over common reporting periods.Open the tool
Questions the tools are meant to answer.
- When does my certificate expire?SSL Certificate Checker
- Where does my domain point?DNS Lookup
- What status does this URL return?HTTP Status Checker
- How long does a request take?Response Time Checker
- What headers does the server send?HTTP Headers Checker
- How much downtime does 99.9% allow?Uptime Calculator
One-time checks and continuous monitoring.
A one-time check
A manual check at one moment. It answers “what is the situation right now?” and nothing about the hours before or after.
Continuous monitoring
Repeated checks that record every result and can send an alert. UptimeWire monitors each website URL you add for uptime, SSL certificate, domain expiration, and DNS resolution.
A passing one-time check does not show that a website stayed available between checks.
Need to know when your website goes down?
A one-time check shows a single moment. UptimeWire keeps checking and alerts you. Every website includes uptime, SSL certificate, domain expiration, and DNS resolution checks.