Is there an option to pack textures using AssetBundles using Unity's image compression?

I have some 2K Textures in my Project Folder, but am compressing them within Unity.

When I am packing them in an AssetBundle however, they remain without compression. Do I have to compress them manually using Image Editor software before packing or is there an option I’m missing in Unity?

In unity when you select you texture you can choose, trueColor, compressed, 16bit or crunched.

You may choose compressed. Don’t forget to choose the MaxSize at 2048.