We are retiring the First Input Delay (FID) and Time to Interactive (TTI) metrics from Calibre.
Here's what you need to know:
- First Input Delay has been removed from Google's CrUX dataset, Calibre has removed FID from CrUX Dashboard and Pages reports.
- Time to Interactive was removed from Google Lighthouse in version 10. Calibre has removed TTI from Snapshot Overview. TTI will still be collected during synthetic tests, though it is no longer a recommended metric.
Going forward, we recommend using Interaction to Next Paint (INP) as a replacement for First Input Delay and Total Blocking Time (TBT) as a replacement for Time to Interactive.