build_slim 0.4.0

A CLI tool and library to analyze and reduce the size of Flutter APK, AAB, and IPA build artifacts using best-practice optimizations.

example/README.md

build_slim example

This folder demonstrates how to use build_slim in a Flutter project.

1. Add the package

flutter pub add --dev build_slim

Or activate it globally:

dart pub global activate build_slim

2. Analyze your project

dart run build_slim optimize --analyze-only

This prints a list of findings without modifying files or starting a build.

3. Build an optimized APK

dart run build_slim optimize --target apk --tree-shake-icons --obfuscate

The tool will:

1. Analyze your project.
2. Patch Android Gradle settings safely (with .bak backups).
3. Inject --tree-shake-icons, --obfuscate, and --split-debug-info.
4. Run flutter build apk.
5. Print a before/after summary.

4. Compare artifacts

If you already have two builds, compare them with:

build_slim report \
  --before ./build/app/outputs/flutter-apk/app-before.apk \
  --after ./build/app/outputs/flutter-apk/app-after.apk \
  --format html \
  --output ./size_diff.html