Performance
TTFB & Latency Compare
Measure how fast a website responds. Compare two sites side by side to see which loads faster.
How to use
- Browser test measures from your connection
- Server test measures from Chicago
- Compare to spot the issue source
From Your Browser
Measures time until the first response data arrives. Includes your connection, Wi‑Fi, and everything between you and the target.
Enter two URLs and run the test to see latency from your browser.
From Chicago Server
Server-side measurement showing DNS, connect, TTFB and total time as seen from Chicago. Helps distinguish origin issues from client-side problems.
Enter a URL and run the test to see server-side timings.
Notes
- Browser test uses fetch—some cross‑origin targets may block or behave oddly.
- Server test uses cURL from Chicago. It may be rate‑limited by some sites.
- Use both modes together to narrow down whether issues are local, network‑path, or origin related.