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Free Online Website Performance Tools

Instantly get a snapshot of your website availability and performance from nearly two dozen locations around the world. These are the only free online website performance test tools that give you global results from the end-user's perspective.

Web Servers

Availability and server performance information for your HTTP or HTTPS website.

Web Page Speed Test

Receive a detailed, element level waterfall chart from this browser- based website speed test.

Email Servers

Test POP3, IMAP or SMTP mail server performance and availability.

Email Blacklist Lookup

DNSBL lookup checks to see if your email server is listed in major spam blacklists.

Network Trace

A remote traceroute test tool that will help you troubleshoot network and connection issues.

DNS Trace

A DNS performance test that traverses the DNS tree starting at the root server level.

FTP Test

Check Test FTP server performance and verify file availability.

Streaming Media

A streaming video test tool that checks performance and availability of your streaming media files.

Ping Test

Test website availability from multiple locations around the world with this global ICMP pingtest.

Network Latency

An instant snapshot of Internet Latency from nearly two dozen points around the globe.

Try Free for 30 Days Get started in 60 seconds. No credit card, no commitment.
Start monitoring Sites, pages, apps & transactions

Dotcom-Monitor offers a full-suite of web performance monitoring tools. Monitor virtually any public-facing website, server, portal or device including IIS, Apache, Exchange, VoIP and more.

  • Receive real-time alerts when an issue is detected.
  • Use robust diagnostic tools to troubleshoot issues as they are uncovered.
  • Optimize the performance of your systems by identifying bottlenecks to improve user experience.

Learn more about automating your performance testing with website monitoring and load testing.