(Оффтоп)
И в чём юмор?
В произношении формата, видимо.
https://whatis.techtarget.com/fileforma ... op-default Цитата:
When an image is complete, Photoshop allows the user to flatten the layers and convert the flat image into a .JPG, .GIF, .TIFF or other non-proprietary file format so it can be shared. Once a PSD image has been flatten by conversion, however, it cannot be converted back to PSD and the user can no longer work with the image's layers. It is important, therefore, so always save the .PSD file and not overwrite it during conversion.
То есть догадка с неслитыми слоями наиболее правдоподобна.