Website Speed Test
Analyze Performance
Measure page load time, response time, and core web vitals performance metrics for any website
Frequently Asked Questions
What does this Website Speed Test measure?
This tool measures the critical backend networking phases of a website load, including DNS Resolution, TCP Connection, TLS Handshake, Time to First Byte (TTFB), and the actual time it takes to download the raw HTML document.
What is Time to First Byte (TTFB)?
TTFB measures the time from when a user or client makes an HTTP request to when the first byte of the page is received by the client's browser. A slow TTFB usually indicates server-side performance issues or lack of caching.
What is considered a good Total Load Time?
For the raw HTML document (which this tool measures), a good total time is under 500ms. Keep in mind that browsers then have to download CSS, JavaScript, and images, so the faster the initial HTML document loads, the faster the whole page can begin rendering.
Why does the TLS Handshake take time?
TLS (Transport Layer Security) is the protocol that provides a secure (HTTPS) connection. Establishing this secure connection requires multiple back-and-forth messages between the server and client to exchange cryptographic keys, which adds a slight delay to the initial connection.
How can I improve my website's response time?
You can drastically improve response times by utilizing a CDN (Content Delivery Network) like Cloudflare, enabling server-side caching, optimizing your database queries, and upgrading your web hosting infrastructure.