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Optimizing your Apps
for
Emerging Markets
#DevFestAhm
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Emerging Markets
Drive Growth
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Everyone is
Different
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1. Different Phones
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Small Screens
Slow Phones
Challenges
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Optimizations
Year Class
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Optimizations
Year Class Redesign
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Supporting Screen Sizes
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Optimizations
Year Class Redesign Asset Tinting
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Why Tint Assets?
• Need lesser Assets
• Less memory used
• Faster Iteration Times
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//Code
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6
23
3
5
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2. Different Networks
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71%
3G Penetration
7.5%
3G Penetration
Challenges
500 ms 280 ms
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Optimizations
Dynamic Network Quality
Detection
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//Code
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Adjust Behavior
• Increase/Decrease Compression
• More/Less Parallel Network Requests
• Pre-Fetch more content
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Optimizations
Dynamic Image
Compression
Pre Fetching Content
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3. Different Data Plans
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Challenges
Sales
Image Downloads Dominate Consumed Content
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Optimizations
Image Scaling
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Appropriate Image Size
• Thumbnail, Preview Image, Full Image
• Low-res devices might never need a full resolution
image
• Most times the thumbnail is enough
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Optimizations
Image Scaling Flat Design
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Optimizations
Image Scaling WebP
Flat Design
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JPEG WEBP PNG GIF
Lossy
Lossless
Transparency
Animation
Comparisons
90% of images sent to Facebook for Android are WebP format
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PNG
24 kb
WebP
10 kb
No Noticeable Change
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Compression
• Use Native WebP decoder on Android 4.2 and later
• Use libwebp and libpng to transcode back to JPEG
and PNG.
To avoid the transcoding cost, use JPG with mozjpeg
• Compatible with JPEG
• 5% size reducation
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4. Different Languages
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Challenges
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Questions?
@vinaygaba
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http://bit.do/vinaygabafeedback
@vinaygaba