Building Omni Browser: Resolving Mobile Performance Bottlenecks

April 15, 2026

Shrinking the Footprint

In mobile environments, performance and installation size are tightly coupled. Devices running low storage speeds experience significant delays when loading large binary codebases. When optimizing Omni Browser, our goal was to bring the APK size below 5MB.

Identifying Bottlenecks

Using analyzer tools, we found three main sources of bloat:

1. Unused Code Paths: Large standard libraries with unused classes.
2. Heavy Vectors & Raster Assets: Uncompressed launcher and utility icons.
3. Redundant Network Classes: Duplicate networking protocols across third-party extensions.

Optimization Strategy

We adjusted the compilation parameters in the build script and introduced aggressive code shrinking:

// build.gradle.kts optimizations
android {
buildTypes {
release {
isMinifyEnabled = true
isShrinkResources = true
proguardFiles(
getDefaultProguardFile('proguard-android-optimize.txt'),
'proguard-rules.pro'
)
}
}
}

By combining Gradle shrinking with clean SVG vector rendering, we successfully reduced resource overhead and improved startup performance by over 40%.