Remove alpha channel in an image

Question

I have an app icon for iOS but Apple doesn\'t allow alpha to be in the image. How to remove this alpha channel? I only have the png image with me I don\'t have the source fi

Answer 1

If you are using the Preview app, there's no need to export then re-export between jpg and png, just choose export and below the filetype (PNG) you will see an alpha checkbox, unset it and save.