Monitor your websites with cutting-edge HTTP/3 detection, detailed TTFB breakdowns, Brotli compression tracking, and instant alerts when performance degrades.
Automatically detect and track HTTP/3 (QUIC), HTTP/2, and HTTP/1.1 protocols. Get notified when your site unexpectedly downgrades.
Fastest protocol with 0-RTT connection resumption. Built on UDP for reduced latency and better performance on mobile networks.
Binary protocol with multiplexing and header compression. Significantly faster than HTTP/1.1 for modern websites.
Legacy protocol still used by many servers. If your site falls back to HTTP/1.1, you'll know immediately.
Time to First Byte (TTFB) is crucial for user experience and SEO. We break down every millisecond so you know exactly where your time is spent.
Total TTFB: 181ms — Excellent!
Track Brotli and Gzip compression. Get instant alerts if your compression stops working — catching misconfigurations before users notice.
~20% smaller than Gzip
Brotli provides the best compression ratios for text-based content.
We verify your server is sending Content-Encoding: br headers.
Universal compatibility
Gzip is supported everywhere. If you don't have Brotli, Gzip is the minimum you should have. We alert you if neither is working.
Get notified instantly when something degrades. We establish a baseline and alert you on any unexpected changes.
Instant alert when your site becomes unreachable or returns errors.
Alert when HTTP/3 falls back to HTTP/2 or HTTP/1.1 unexpectedly.
Alert when Brotli or Gzip compression stops working on your site.
7-day warning before your SSL certificate expires.
More frequent checks means faster detection of issues.
Hourly checks
5-minute checks
1-minute checks
1-minute checks
Free tier includes 1 website with hourly checks. No credit card required.