Android app · Media

Photo Optimizer

Photo compression and optimization tool for reducing image size while preserving quality.

Get it on Google Play ↗ Source on GitHub ↗

An offline, privacy-first Android app for batch photo compression, EXIF metadata removal, and duplicate detection. Your photos never leave your device.

Package: com.michael.photo.optimizer · Min SDK: 24 · Target SDK: 36

Features

• Batch compression — WebP (lossy or lossless), JPEG, or PNG with quality slider or target max file size
• Before/after preview — draggable split slider to compare results before saving
• EXIF stripping — remove GPS, camera, and timestamp metadata in one tap or as a standalone pass
• Duplicate finder — group same-size files and compare content hashes, then review and delete redundant copies
• Flexible output — keep originals intact; write optimized copies beside them or to a separate folder
• Background processing — larger batches run via WorkManager
• Offline-first — no account, no cloud uploads; processing uses local Android storage APIs only

Screenshots

./gradlew generatePlayStoreAssets

Tech stack

• Kotlin · Jetpack Compose · Material 3
• Navigation Compose · ViewModel · DataStore Preferences
• WorkManager · ExifInterface
• Roborazzi + Robolectric for Play Store screenshot tests

Tests

# Unit tests (screenshot tests excluded by default)
./gradlew testDebugUnitTest

# Play Store screenshot generation
./gradlew generatePlayStoreAssets

Privacy

Photo Optimizer reads and writes photos only through storage permissions you grant. See the companion privacy policy site in PhotoOptimizer-pv (sibling repo) for Play Store compliance.