How to reduce the android app build size!

Unity Engine
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How to reduce the android app build size!

right now without any data the empty unity project getting 18mb output file .How to reduce that size around 5mb?

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bump

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you can build an apk per processor architecture (e.g: ARM and x86 APKs).

This removes around ~ 8 - 10 mb from the build.

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any other answers?

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If you have ‘using System;’ in some script, it adds 1mb(?) (not tested, but have heard so…)

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right now i can able to reduce only 10 mb as liortal said .by changing to arm7. but i dont think using system will reduce size.empy scene without script is 19mb right now

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if u change arm 7 only target format for processor then u get 19-9 mb so =10 total .for a empty project

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i dont know how to reduce more than that .if any other know let me know.empty scene should take that much size.want to reduce that

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The engine + mono takes a few good mb’s… u cannot drop below that. even for an empty scene (no content).
You can try to use il2cpp on Android, i haven’t used it so i am not sure what is the current size for those builds.

In il2cpp i believe that they apply stripping for engine code, so that may reduce the unused parts and reduce the overall size.

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Unity build size begins from ~15 mb and Unreal Engine 4 begins from ~50mb.
This is for engine internal dll and files. For example splash screen image.
After 15 mb, you can manage your build size with these tips:

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ok thanks for all !

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Bumped across this while try to reduce the size of a very simple game, currently consuming 24 MB.

Thanks… that explains a lot… But 15MB for mobile platform is a lot I believe, where size matters a lot. Still way better than UE4 I guess.

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When i run my app size of apk will 21 MB. even i enabled proguard. i use android studio to run project. in project files src folder has 8.62 MB size and lib folder size is 400 KB size. so how i reduce size of .apk file. Actually .apk file is 8 mb before some days with same images but after paypal integration my app size will increases to 21 mb. size of build folder is 127 MB.

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I am using Unity 22018.1.7, however, but I remember reading in the release notes, that, iirc, the latest version allow us to chose which default packages to include in the build. I am not sure if they mean what I think they mean, but I believe we can remove the unneeded Unity modules now. Has anyone tested this?

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I tired it. Should just work :slight_smile:

3897073--331675--upload_2018-11-16_13-54-31.png
3897073--331675--upload_2018-11-16_13-54-31.png722×772 35.7 KB

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That’s really great. What was the final size?
Also, I noticed that you are using 2019.1 Alpha, not the latest f release. But, it is there in 2018.2+, right?

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Yes I think it’s present in 2018.2 and later.

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Great.

Too sad I tried 2018.2 yesterday, but my project doesn’t seem compatible.
Mostly due to the use of TextMeshPro. T_T

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For anyone stumble upon this post later, disable unity build-in package did not help reduce file size. It gonna be stripped if you not using it anyway so there is no point disable it.

And the smallest size I can get with 2018.2 unity default scene with Camera is 6.25MB

You have to use stripping engine code with:

  • Scripting runtime version: .Net 3.5
  • Script Backend: ILL2CPP
  • Api compatibility level: .Net 2.0 Subset
    For Texture: Use Unity Atlas or sprite packer to reduce texture size
    For Scene: use asset bundle does help compress Scene Size in build
    For Music: lower it from wav to 192kbs MP3
2 Likes
Reducing build size for a UI game
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Thanks @NoDumbQuestion
Worth noting

BTW, doesn’t Unity automatically use Atlas for all textures?

What do you mean by this?