When I import .png texture into the engine, the icon in the Asset Browser may have interference in the background. How do I fix it? Example on screenshot. All images have invisible background. Imgur: The magic of the Internet
Use tga instead of png.
Or ignore it. It will look fine when you use it as an icon.
How can I save invisible background in TGA? It always becomes colored after saving in Photoshop.
You’d need to save transparency as a separate channel. Btw, you can use psd files with UE4, perhaps this will simplify the workflow.