I made it for myself, but maybe someone will need it. "Converts" textures so that new textures open in Texture_Viewer_1.1.
Drag and drop to .exe or pass the file path as the first argument. It only takes the file as an argument, because in order to convert all the textures from the folder I use .bat.
Upd. There was a download link here, but it was removed from this post, because for some reason antiviruses falsely identified the program as a virus and Google Drive blocked the file for download.
P.S. The program edits the file (replaces) rather than creating a modified copy. So, be careful if this is the only copy of the texture, without backups.