Option to select/copy all transformed code?

I could not find any option to select all of the transformed code. All I have to do is press CTRL+A, but this selects also the source/original text in the window. One has to drag the source code from top to bottom; not very user-friendly when the code is too long.

I really think there should be a button to do this, like what [SVGOMG](https://jakearchibald.github.io/svgomg/) does.