1. Put the symbol of the screenshot into a new layer, and set the blending mode of this layer to darken or overlay the positive film, or linearly deepen or darken, whichever is acceptable. So white becomes transparent. The black symbol is reserved. The layer blending mode is in the upper left corner of the layer group. Baidu can't upload pictures

2. Put the symbol of the screenshot on a new layer. You can use the magic wand tool to select white, and then press delete to delete white. The magic wand tool is located in the upper part of the left toolbar.