Exporting ABB with 2021.3 creates 2GB game size while 2019.4 is only 700mb

[sawyerbb]

I recently upgraded an old project to Unity 2021 and realized the size differences of the two versions exported.

ABB size in 2021.3 = 500MB
ABB size in 2019.4 = 270MB

Game size after unpacking ABB:
2021.3 = 2GB
2019.4 = 700MB

I would like to understand how both versions compile abb files. How did my game files expanded so much? Texture compression are the same in both projects

[LandonC]

I am facing similar issue. Bump

[LandonC]

What’s bothering more is the time needed to compress textures when switching between platforms. It was only about 20 mins when using older versions

[LandonC]

So, after deleting the Library folder and recompiling the entire project, my ABB file becomes 100 mb larger, shouldn’t the size be consistent?

[LandonC]

This is the cause. Versions 2020 and above no longer support sprite packing, instead it uses Sprite Atlas. Pack the sprites into the Sprite Atlas and the size will remain the same. Bummer, if only someone pointed out earlier.

Deprecating Sprite Packer Legacy

We are in the process of deprecating Sprite Packer Legacy(SpriteAtlas packing through option of PackingTags in the TextureImporter settings). However we are still allowing existing Assets to continue working with the following constraints : The Packing Tags box in Texture Importer is now read-only. Atlases based on Packing Tags are not automatically packed. Requires calling the script using IPreprocessBuildWithReport Editor Packer Settings only shows Disabled and SpriteAtlas options We strong…

Where is the "Packing tag"?

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