Not all Web Browsers support WebP
- But since we are Mobile First, this is a don’t care
- We built the WebP reader into our Mobile SDK for iOS
- See our code and how to include a WebP reader for mobile.
- WebP compression changes for the Mapbox iOS SDK for rendering raster & vector map data — https://github.com/roblabs/mapbox-gl-native
iPhone App Size Study
Apple allows you to “choose whether you want to be asked for permission for downloads over 200 MB”. Data sampled October 2019
| iPhone App | App Size with WebP Rasters (MB) |
App Size with PNG Rasters (MB) |
|
|---|---|---|---|
| Mapbox Studio Preview | 15.1 | ||
| NGA M.A.G.E. | 20.7 | ||
| Offline Lower Colorado River | 78.0 | Native Offline✈️ | 101.6 |
| Offline Mount Whitney | 99.1 | Native Offline✈️ | 169.9 |
| Southwest Airlines 🗺? | 101.4 | ||
| Offline Joshua Tree National Park | 102.9 | Native Offline✈️ | |
| 108.2 | |||
| Offline Yosemite National Park | 146.7 | Native Offline✈️ | 236.7 |
| Whats App | 155.8 | ||
| Offline San Bernardino National Forest | 158.3 | Native Offline✈️ | 233.3 |
| Starbucks 🗺? | 159.4 | ||
| Schwab Mobile | 176.5 | ||
| Amazon Prime Video | 178.2 | ||
| United Airlines 🗺? | 194.9 | ||
| Delta Airlines 🗺? | 204.3 | ||
| Apple’s LTE cut off, Wi-Fi only after 200 MB | — | — | — |
| Bank of America | 413.4 | ||
| 442.9 |
🗺? - A good use case for Offline Maps for Mobile. Todo: Research their map strategy.