Optimize APK size
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Best practises how to reduce Android application install size & improve your app install conversation rate. Video can be found here youtu.be/ksgW-VHH-Qo
Optimize APK size
- 1. Kirill Rozov Android Developer Optimize APK size GDG Minsk
- 2. medium.com/googleplaydev/shrinking-apks-growing-installs-5d3fcba23ce2 Average downloaded APK size
- 3. 64 MB
- 4. What for? DownloadAPKsize 0 5 10 15 20 25 Size from Google Play for Xiaomi Mi A1 Android 8.0
- 5. Why its problem? Support low-end devices Low space on device memory How long time it will take to download app I need it right now!!! No Wi-Fi Cellular data costs
- 6. Effect Lower install conversion rate Google Play Featuring problems Google Play Security Checks problems Problems with Instant App (4Mb limits)
- 10. Size related to app APK size Initial download size On-device install size Update download size
- 11. Size related to app APK size Initial download size On-device install size Update download size
- 13. Image Optimizers
- 14. PNGQuant ImageMagick PNGGauntlet PNGOut PNGCrush OptiPNG CryoPNG PNG Compressor Yahoo Smush.it PNGOptimizer PunyPNG TinyPNG PNGWolf Advpng De鍖Opt De鍖u鍖 Hu鍖mix TruePNG PNGng-s9 zop鍖iPNG
- 15. ImageOptim
- 18. Optimization results 228 Images Save: 28% Average: 36% Max saving: 98.6% 6.5 MB
- 19. Android PNG Cruncher android { buildTypes { release { // Disable PNG optimisation crunchPngs false } } }
- 21. Use WebP
- 22. PNG vs WebP PNG, 958 KB WebP 100%, 286 KB-70%
- 23. PNG vs WebP PNG, 958 KB WebP 75%, 29 KB-97%
- 24. Vector graphics
- 25. Vector graphics xxxhdpi 3.6 KB xxhdpi xhdpi hdpi mdpi 2.5 KB 1.6 KB 1.1 KB 0.7 KB PNG, 100x100dp, 8 bit
- 26. Vector graphics Size, bytes Optimized PNG, 5 鍖les SVG VectorDrawable Android Shape RAW 10,023 359 416 232 In APK 10,023 - 371 241
- 29. Multiple APKs
- 30. Multiple APKs android { splits { // Configures multiple APKs based on screen density density { enable true // Specifies a list of screen densities Gradle // should not create multiple APKs for exclude "ldpi", "xxhdpi", "xxxhdpi" // Specifies a list of compatible screen size // settings for the manifest compatibleScreens 'small', 'normal', 'large', 'xlarge' } } }
- 31. Reuse graphics
- 35. Optimize images Use image optimizer Use WebP Use vector graphics Use multiple APKs for di鍖erent screen Reuse similar images Skip images for low densities
- 37. Fonts
- 41. Resource shrinker android { buildTypes { release { minifyEnabled true shrinkResources true } } }
- 42. Resource con鍖gurations android { defaultConfig { resConfigs ru, en, es, fr, ge } }
- 43. Resource con鍖gurations android { defaultConfig { resConfig auto// Only for localization languages } }
- 44. Resource con鍖gurations android { defaultConfig { resConfigs ru, en, es, fr, ge resConfigs mdpi, hdpi, xhdpi, xxhdpi resConfigs normal, large, xlarge } }
- 45. Resource Optimizations Downloadable fonts Remove unused resources Reuse resources Use recommended media formats AAC for audio, H264 AVC for Video and etc. Update strings over-the-air
- 46. localise.so
- 48. D8 dex compiler
- 49. DX compilation timeTime(s) 0 5 10 15 20 DX D8 * Tested with benchmark project here
- 50. .dex 鍖le sizeFilesize,MB 0 10 20 30 40 50 DX D8 * Tested with benchmark project here
- 52. Code optimizations tools Java bytecode ProGuard DexGuard R8 dex Facebook ReDex
- 53. Input JARs Optimised code Optimize Shrunk code Shrink Obfuscated code Obfuscate Output JARs Preverify
- 54. ProGuard Result Plaid App Results No optimization Optimization Optimization + obfuscation .dex size 2.6 Mb 1.2 Mb 0.9 Mb Classes number 4827 2747 2715 Method references 42664 22319 18922 medium.com/google-developers/practical-proguard-rules-examples-5640a3907dc9
- 56. External libraries usage Remove unused Android Support Library parts Try to dont add libraries for 1 class/method usage Re鍖ection based libraries cant be properly optimised and shrinked Dont add debug libraries to a release builds Facebook Stetho LeakCanary etc.
- 57. Native libraries
- 58. Remove unused ABIs android { defaultConfig { ndk { abiFilters armeabi-v7a, arm64-v8a, x86 } } }
- 59. Multiple APKs for ABIs android { splits { // Configures multiple APKs based on ABI abi { enable true // Resets the list of ABIs // that Gradle should create APKs for to none reset() // Specifies a list of ABIs // that Gradle should create APKs for include armeabi, armeabi-v7a, arm64-v8a } } }
- 60. Code Optimisations Use D8 compiler instead of DX Code optimizations & shrinker tools Be careful about using external libraries Remove support of unused ABIs Use multiple APKs for ABIs
- 62. APK Structure
- 63. Packaging options android { packagingOptions { exclude "/okhttp3/**" exclude "/com/google/api/**" exclude "/kotlin/**" exclude "/com/applovin/**.java" exclude "/META-INF/*.version" exclude "/META-INF/**.pro" exclude "/META-INF/services/**" exclude "**/*.kotlin_module" exclude "**/*.properties" exclude "**/*.xml" } }
- 64. Google Play
- 65. Features Special compression format File-by-File updates Multiple APKs
- 66. Google Play Multiple APKs OpenGL texture compression formats Screen sizes and densities Device feature sets Platform versions CPU architectures Special APK for Android Go Edition
- 67. Google Play App Signing More about App Signing youtu.be/5tdGAP927dk