Flutter APK in Android Studio “Analyze APK” shows 16KB page size warning for libwebcrypto.so
07:30 24 Nov 2025

I recently updated my Flutter project to version 3.38.1.
Google Play now requires APKs and AABs to use a 16 KB page size for native libraries.

I have verified the alignment in:

zipalign -c -v -P 16 "build/app/outputs/flutter-apk/app-release.apk"

The output is:

Verification successful

However, when I open the APK using Android Studio → Build → Analyze APK, I still see this warning:

Warning: 16KB page size required
Affected file: libwebcrypto.so

enter image description here

🔧 My Android configuration

compileSdk = 36
minSdk = 27
targetSdk = 36

ndkVersion = "29.0.14206865"

id("com.android.application") version "8.12.2" apply false
id("org.jetbrains.kotlin.android") version "2.1.0" apply false

gradle-wrapper.properties

distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-all.zip

do I need to modify anything in Gradle, NDK, or packaging options to silence this warning or is it just Android studio bug?

android flutter 16kb-page-size