Pruning Your App: Good Practices for Reducing App Size
summary
Converts large PNG assets to WebP and cuts binary size with a concrete case where a 1.66 MB PNG becomes 48 KB (≈3% of original) and a full-app asset conversion drops Xfinity download from 92.9 MB to 82.9 MB (≈10%); enables R8 with minifyEnabled true to shrink 150k methods to 45k and collapse three dex files to one (Google IO example: 18 MB → 6 MB); uses convert PNG to WEBP batch in Android Studio, use Play on demand delivery for a 5 MB AR module delivered only to compatible devices, and gates CI builds with a 130 MB APK threshold.
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chapters (7)
- 0:00Introduction and agenda
- 1:14Why reducing app size matters
- 6:54Using WEBP for image compression
- 13:20Code shrinkers like R8
- 21:02Google Play feature delivery
- 24:58Monitoring app size over time
- 30:18Tools and summary
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