Page Load Speed Test — DNS, TCP, TLS, TTFB timings

Page Load Speed Test Online

The 101IP Page Speed tool measures server response time across all connection phases: DNS resolution, TCP handshake, TLS negotiation, Time to First Byte (TTFB), and total page load time.

What the metrics mean

DNS — time to resolve the domain name to an IP address;
TCP — time to establish a TCP connection with the server;
TLS — time for TLS/SSL handshake (HTTPS only);
TTFB (Time To First Byte) — time from sending the request until the first byte of the response is received;
Total — full time to download the HTML page from the server.

Good benchmark values

Under 500 ms — fast;
500–1500 ms — acceptable, room for optimization;
Over 1500 ms — slow, needs attention.

Measurements are made from 101IP servers, so results reflect server response speed, not the time to load all assets (CSS, JS, images) in a user's browser.

Frequently Asked Questions

What is TTFB and how should I interpret it in a page speed test?

TTFB (Time To First Byte) is the time elapsed from sending a request to receiving the first byte of data from the server. It reflects the performance of your hosting and back-end logic. In this tool, values under 200 ms are excellent, 200–500 ms are acceptable, and anything higher indicates a need to optimize the server — for example, by enabling caching or tuning the web server configuration.
Why does my site show a high TLS Handshake time in the results?

A high TLS handshake time is often caused by outdated cipher suites or an overly long SSL certificate chain. The page speed tool captures this phase separately so you can optimize HTTPS performance. Enabling TLS 1.3, disabling legacy ciphers, and minimizing intermediate certificates can reduce handshake time by 30–50%.
Can the HTML page size affect load speed, and how do I check it?

Yes, the size of the HTML document directly affects how long it takes to transfer data from the server to the browser. This tool shows the page size in bytes after the response is received. If the HTML exceeds 100–200 KB, it may slow down overall load time, especially when TTFB is already high. Check whether large inline scripts or styles are embedded in the HTML, and enable Gzip or Brotli compression on the server.