Time to First Byte TTFB

Volt Studios

What Is Time to First Byte TTFB

Time to First Byte (TTFB) refers to the time between the browser requesting a page and when it receives the first byte of information from the server. This time includes DNS lookup and establishing the connection using a TCP handshake and SSL handshake if the request is made over https.

TTFB is also known as “latency”. It’s important because it can be used to determine how quickly your site loads, which in turn affects how fast users will perceive it. If you’re experiencing high latency, you may want to investigate why this is occurring and what steps you can take to reduce it.

Time to first byte is important because if it takes too long for content to load, users will leave your site because they will not be able to see what you have to offer. It also affects how fast your website loads on mobile devices, which is a more prevalent place for people to visit websites today.

Let’s say you have two pages that are both downloading images from an external source, such as a public library or Google Drive. The first page takes 1 second to load while the second page takes 3 seconds to load. In terms of Time To First Byte (TTFB), the first page has an average TTFB of 4 seconds while the second page has an average TTFB of 9 seconds.