photopeaOpen and edit PSD, XCF, Sketch (Photoshop, Gimp and Sketch) or any other image files. Inspect PSD and Sketch files. Convert Sketch to PSD. Apply photo effects and filters. A perfect alternative to Photoshop or Gimp.
https://www.photopea.com/[https://photopea.com]
And there are many youtube videos that will explain/teach you how to use it.