A journey to smaller apk size

Transcript

1. A JOURNEY TO SMALLER APK SIZE Dmytro Khmelenko Software Engineer 7 March 2018
2. ONCE UPON A TIME… Release APK size is 63 MB 2
3. ONCE UPON A TIME… Release APK size is 63 MB 3
4. 4 ANALYZE APK
5. ANALYZE APK 5
6. RESOURCES OPTIMIZATION 6 ✅ Shrink video files (- 10 MB)
7. 7 Overall bit rate : 3 235 kb/s Bits/(Pixel*Frame) : 0.549 Stream size : 4.77 MiB (94%) File size : 5.3 MB Overall bit rate : 735 kb/s Bits/(Pixel*Frame) : 0.108 Stream size : 963 KiB (81%) File size: : 1.2 MB
8. RESOURCES OPTIMIZATION 8 ✅ Shrink video files (- 10 MB) ✅ Shrink audio files (- 4 MB)
9. AUDIO FILES 9 Before: Bit rate : 256 kb/s Channel(s) : 2 channels Sampling rate : 44.1 kHz File size : 56.4 KB After: Bit rate : 32.0 kb/s Channel(s) : 1 channel Sampling rate : 16.0 kHz File size : 13.7 KB
10. RESOURCES OPTIMIZATION ✅ Shrink video files (- 10 MB) ✅ Shrink audio files (- 4 MB) ✅ Shrink and optimize drawables (- 25 MB) 10
11. 11 525 KB, .png 75 KB, .jpg
12. DRAWABLES OPTIMIZATION ✅ Remove unused drawables (Lint, ProGuard) ✅ Support only hdpi, xhdpi and xxhdpi ✅ Use .jpeg, when possible ✅ Use .webp instead of .png 12
13. DRAWABLES SIZE hdpi ~ 50 KB xhdpi ~ 100 KB xxhdpi ~ 150 KB 13
14. TIME TO REVIEW 14
15. TIME TO REVIEW 15
16. LEARNINGS Pay attention to resources Collaborate with designers 16
17. MEANWHILE 17
18. WE NEED TO STOP IT 18
19. IT WORKS 19
20. FURTHER STEPS • Multiple APK split by screen density • Multiple APK split by CPU architecture • Automatically check size for every new file 20
21. RESOURCES • https://developer.android.com/topic/performance/reduce-apk-size.html • https://developer.android.com/google/play/publishing/multiple-apks.html • https://gist.github.com/dkhmelenko/d74dbc6c9907c7a581bde0e1bee5c74b 21
22. QUESTIONS? @dkhmelenko