The presented optimizations may have some small side effects for memory usage and performance, both positive and negative. Runtime memory footprint is mostly out of scope for this series of articles. I will try to highlight these trade-offs and provide an explanation wherever applicable, but ultimately it’s up to you, the developer, to choose a mix of techniques that make sense for your app and your users. In other cases, contrary to intuition, keeping files uncompressed in your APK can reduce the final amount of disk space taken on the device. Sometimes, sacrificing initial download size will speed up subsequent updates. Of course, considering the various requirements and constraints we all have to work with, it’s difficult to choose a one-size-fits-all solution. And who knows, these might be your next thousands or million users, so let’s try to make that APK smaller! It will benefit everyone. Some devices don’t have the internal storage capacity (disk space) to let users install all the applications they need, which means they have to think twice before installing or updating any software. There are places in the world where users have to pay for every megabyte of data they download and Wi-Fi hotspots are not readily available on every corner. If you’re a developer with a high end phone on an all-you-can-eat data plan you might be wondering if it’s worth spending your time on optimizing for APK size… Remember, not all devices have the same storage, memory or network connectivity. What is the memory footprint (in terms of RAM used) of running your application?.How big is the download size for an update to your app for existing users?.How much network data does the user have to pay for to download and install your app?.How much space does your app take up when installed on a user’s device?.It’s the most straightforward answer and it’s technically correct, but perhaps I should be asking better questions. If I ask a bunch of developers what their app’s size is, I’m pretty sure most will look at the APK file generated by Android Studio and tell me how much disk space it takes up on their computer. Update 1: We no longer recommend using Zopfli for compressing your APK
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