What is TTFB by country
TTFB by country shows the Time to First Byte (TTFB) for your most visited countries. This lens is useful to find countries from which the traffic is experiencing backend or network delays that impact your overall TTFB metric.
The list includes only countries from which your website received traffic during the selected period and device type. Countries with no traffic won't appear.
Usual reasons for slower TTFB in certain countries include increased server distance, lack of CDN coverage, poor DNS resolution, or unstable network conditions on the user’s side.
By default, the widget shows only the top countries by traffic. Maximize the lens widget to see all countries.
TTFB is a foundational performance metric that shows how fast the server responds with the first byte of data after a request is made.
Healthy TTFB by country sample
Should you worry
A healthy TTFB by country lens looks all green. Some countries may be greener than others, but as long as there's no yellow or red, it’s considered healthy. The greener the country, the faster and more consistent the server response.
Unhealthy TTFB by country sample
In the example below, the TTFB by country reveals that Germany is where most of the users visit from and at the same time has the slowest real user TTFB values, whereas the rest of the countries are fast. This directly translates to higher bounce rate, higher exit rate, and lower conversion rate for Germany compared to the United States, United Kingdom, and Bulgaria.
Resolving unhealthy TTFB by country
Go-to action plan to resolve an unhealthy TTFB by country:
Ask Uxi to analyze your TTFB by country values and suggest improvements.
Use Filters to focus on the slow country in your TTFB by country, then look across the other TTFB lenses to find which ones show the worst backend delays with the most pageviews.
Simulate TTFB of the suspected lens to see if fixing it will resolve the TTFB by country. If yes, this is where the resolution focus should be.
Use an automated optimization tool like Navigation AI to improve your TTFB by country 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.