What is TTFB by user type
TTFB by user type shows the Time to First Byte (TTFB) value across different user types (e.g., First-time visitor, Returning visitor). This lens helps you identify which user types are experiencing longer wait times before the page begins loading.
The list includes only user types that generated traffic to your website during the selected period.
First-time visitors often get slower TTFB due to missing CDN-level caching or needing to go through fresh backend processing. Returning visitors may benefit from cached resources or session-based optimizations that reduce wait times.
TTFB is the time it takes for the browser to receive the first byte of response from your server or CDN — and it’s critical to the overall loading experience.
Healthy TTFB by user type sample
Should you worry
A healthy TTFB by user type lens looks all green. Some user types may be greener than others, but as long as there's no yellow or red, it’s considered healthy. The greener the user type, the faster the server response.
Unhealthy TTFB by user type sample
In the example below, TTFB by user type shows that first-time visitors are experiencing significantly slower server response times. This may result in longer total page load times, reduced engagement, and higher exit rates.
Resolving unhealthy TTFB by user type
Go-to action plan to resolve an unhealthy TTFB by user type:
Ask Uxi to analyze your TTFB by user type values and suggest improvements.
Use Filters to focus on the slow user type in your TTFB by user type, then check across the other TTFB lenses for regions or pages with the worst performance.
Simulate TTFB of the suspected lens to see if fixing it will resolve the TTFB by user type. If yes, this is where the resolution focus should be.
Use an automated optimization tool like Navigation AI to improve your TTFB by user type values.
Once you’ve improved TTFB, set an alert to be the first to know if it starts worsening again.
Try it yourself
Discover how your website performs with real user data.