How to decrease React-Native android App Size

Question

For my react native android app, size of codes I have written is only 12KB

But package generated is of size 7.9MB. How can i decrease that.

As per Documentation for react native, I have already enbabled proguard on file app_root/android/app/proguard-rules.pro but size of didn't decrease

...
android {
    ...
    buildTypes {
        release {
            ...
            minifyEnabled true
        }
    }
}
...

Is there a solution available for this?

what about `minifyEnabled false` – IntelliJ Amiya Mar 11 '16 at 13:16 — IntelliJ Amiya, Mar 11 '16 at 13:16
false was there by default, that doesnt work – Praveen Prasad Mar 11 '16 at 15:05 — Praveen Prasad, Mar 11 '16 at 15:05
now the size is 30mb and for separate architectures 9mb – Vinil Prabhu Jul 17 '19 at 04:38 — Vinil Prabhu, Jul 17 '19 at 04:38

ashutosh kumar · Answer 1 · 2016-05-30T11:56:25.290

6

React Native app APKs include JSCore binaries for x86 and ARM. If you don't need x86 you could reduce the size to 3-4 MB.

1)In your app/build.gradle set

def enableSeparateBuildPerCPUArchitecture = true

2)remove x86 from abiFilters

this helped me in reducing size from 7.8 mb to 4.5MB

edited May 30 '16 at 11:56

answered May 30 '16 at 11:45

ashutosh kumar

207
3
4

2

How to remove x86 from abiFilters? – Guy Jul 25 '16 at 05:48
I think the line `abiFilters "armeabi-v7a", "x86"` in `android.defaultConfig.ndk`in the same file should simply be changed to `abiFilters "armeabi-v7a` – oldwizard Feb 09 '17 at 09:49

score 3 · Answer 2 · answered Apr 24 '18 at 12:26

Android devices support two major device artitectures armebi and x86. By default RN builds the native librariers for both these artitectures into the same apk.

Open up android/app/build.gradle :

Set def enableProguardInReleaseBuilds = true,

this would enable Progaurd to compress the Java Bytecode. This reduces the app size by a lil bit

And,

Set def enableSeparateBuildPerCPUArchitecture = true .

And check in android/app/build/outputs/apk/ - you will receive two apk files for armebi and x86 with approx half size of original apk.

Nice Answer. But one question... Is there an overview which devices support x86 and which armebi. — suther, Jul 10 '18 at 15:32

BlaShadow · Answer 3 · 2019-07-28T11:59:10.883

There are a couple of techniques in order to reduce your APK size:

Split your app by architecture, you can split your APK by a list of well-known architectures: armeabi-v7a, x86, arm64-v8a, x86_64

if you're distributing your application, using the play store it's a good idea to do it with the Android app bundle.
Enabling prodguard will result in a lower size of the APK.
Optimize your image assets, and if there's a chance try using SVG assets as much a possible.

There have been a change in the size of the resulted APK in React-Native 0.62 by enabling the new JavaScript engine which reduce the size of the native libs almost 40% Hermes Engine

These stats below are from Hermes engine and also mention the APK size reduction.

I will be grateful if you give my some document and resource about your last sentence...(RN.62) — Iman Salehi, Jul 28 '19 at 05:40

score 0 · Answer 4 · edited Apr 19 '22 at 14:06

0

release {
    signingConfig signingConfigs.debug
    minifyEnabled enableProguardInReleaseBuilds
    proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
    shrinkResources true
    ndk { 
        abiFilters "x86", "armeabi-v7a" //this will help you to shrink your app size in release build
    }
}

edited Apr 19 '22 at 14:06

FortyTwo

2,414
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answered Apr 19 '22 at 10:29

Rajan Somani

1
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How to decrease React-Native android App Size

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