A journey to smaller APK size

Slides for the talk at 360|AnDev conference.

Transcript

1. A JOURNEY TO SMALLER APK SIZE Dmytro Khmelenko Software Engineer 19-20 July 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. Analysis 4 EPISODE 1
5. 5 ANALYZE APK
6. ANALYZE APK 6
7. The developers strike back 7 EPISODE 2
8. RESOURCES OPTIMIZATION 8 ✅ Shrink video files (- 10 MB)
9. 9 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
10. RESOURCES OPTIMIZATION 10 ✅ Shrink video files (- 10 MB) ✅ Shrink audio files (- 4 MB)
11. AUDIO FILES 11 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
12. RESOURCES OPTIMIZATION ✅ Shrink video files (- 10 MB) ✅ Shrink audio files (- 4 MB) ✅ Shrink and optimize drawables (- 25 MB) 12
13. 13 525 KB, .png 75 KB, .jpg
14. DRAWABLES OPTIMIZATION ✅ Remove unused drawables (Lint, ProGuard) ✅ Support only hdpi, xhdpi and xxhdpi ✅ Use .jpeg, when possible ✅ Use .webp instead of .png 14
15. DRAWABLES SIZE hdpi ~ 50 KB xhdpi ~ 100 KB xxhdpi ~ 150 KB 15
16. Review 16 EPISODE 3
17. TIME TO REVIEW 17
18. TIME TO REVIEW 18
19. LEARNINGS Pay attention to resources Collaborate with designers 19
20. A new hope 20 EPISODE 4
21. FURTHER STEPS • Multiple APK split by screen density • Multiple APK split by CPU architecture • Automatically check size for every new file 21
23. APP BUNDLE 23 { "supportedAbis": ["x86_64", "x86", "armeabi-v7a"], "supportedLocales": ["en-US", "de-DE"], "screenDensity": 320, "sdkVersion": 24 }
24. APP BUNDLE 24 hdpi base-en.apk: 52 KB base-master.apk: 12.5 MB base-hdpi.apk: 2.3 MB
25. APP BUNDLE 25 base-master.apk
26. APP BUNDLE 26 base-hdpi.apk
27. APP BUNDLE 27 hdpi base-en.apk: 52 KB base-master.apk: 12.5 MB base-hdpi.apk: 2.3 MB xxhdpi base-en.apk: 52KB base-master.apk: 12.5 MB base-xxhdpi.apk: 6.3 MB xhdpi base-en.apk: 52 KB base-master.apk: 12.5 MB base-xhdpi.apk: 3.4 MB
28. APP BUNDLE 28 hdpi base-en.apk: 52 KB base-master.apk: 12.5 MB base-hdpi.apk: 2.3 MB xxhdpi base-en.apk: 52KB base-master.apk: 12.5 MB base-xxhdpi.apk: 6.3 MB xhdpi base-en.apk: 52 KB base-master.apk: 12.5 MB base-xhdpi.apk: 3.4 MB
29. APP BUNDLE 29 hdpi base-en.apk: 52 KB base-master.apk: 12.5 MB base-hdpi.apk: 2.3 MB xxhdpi base-en.apk: 52KB base-master.apk: 12.5 MB base-xxhdpi.apk: 6.3 MB xhdpi base-en.apk: 52 KB base-master.apk: 12.5 MB base-xhdpi.apk: 3.4 MB 14.9 MB 16.0 MB 18.9 MB
30. Random data 30 EPISODE 5
31. 31 REGISTRATIONS
32. The phantom menace 32 EPISODE 6
33. MEANWHILE 33
34. WE NEED TO STOP IT 34 bit.ly/2NvSafl
35. IT WORKS 35
36. RESOURCES • https://developer.android.com/topic/performance/reduce-apk-size.html • https://developer.android.com/guide/app-bundle • https://medium.com/@d.khmelenko/a-journey-to-a-smaller-apk-78155416f280 • https://medium.com/@d.khmelenko/android-app-bundle-6fd1e55c4c4b 36
37. THANK YOU! @dkhmelenko