Time to Interactive
What is the Time to Interactive?
Time to Interactive (TTI) is one of the many metrics tracked by the Performance Scan on both desktop and mobile. Each metric captures a different aspect of your application's performance.
The resulting TTI is shown in milliseconds:
The TTI measures the time when the page starts loading to when its main sub-resources have loaded and is capable of reliably responding to user input quickly.
To calculate manually calculate the TTI, follow the link below at the bottom of this article.
When users try to interact with a page that looks interactive but isn't, they'll likely respond in one of two ways. Best-case scenario: they'll be annoyed that the page is slow to respond Worst-case scenario: they'll assume the page is broken and will likely leave. They may even lose confidence or trust in the value of your brand. To avoid this problem, make every effort to minimize the difference between FCP and TTI. In cases where a noticeable difference does not exist, make it clear through visual indicators that the components on your page are not yet active.