Pre-caching in Flutter and Flutter Web

Pre-caching helps avoid jank, loading flashes, font swaps, and delayed first renders.

The key rule:

Pre-cache only what the user will likely see in the next 1 to 2 screens.

Do not pre-cache the whole app. That can slow startup and waste memory.

1. Google Fonts

Runtime Google Fonts preloading

Use GoogleFonts.pendingFonts() to load the font variants before showing text.