[WebView][Local assets/ String] Customize font family, custom font

[cuong292]

Question

Is there a way to customize fonts when using InAppWebView? I'm looking for options to:

• Set custom font families for web content displayed in the WebView
• Override default system fonts with custom fonts
• Load and apply web fonts or local font files
• Control font rendering properties (size, weight, etc.)

Context

I'm working with InAppWebView in my Flutter application and need to ensure consistent typography across both native UI components and web content. The default font rendering doesn't match my app's design system.

What I've Tried

i tried to load the base64 font ad put it to the html like this, but it's only worked on IOS.

Environment

• InAppWebView version: 6.1.5
• Flutter version: stable
• Platform: iOS/Android