When you see the Photos can’t open this file because the format is unsupported or the file is corrupted, you can fix it in the following ways. Make sure the file format is supported Check if the ...

If you can't seem to save your file as JPEG or PNG in Photoshop, these fixes should do the trick.

He is complaining that when he tries to open JPEG files in preview the app complains that the files are locked and he can't open them. Preview opens locked JPEG files fine on my Mac.

Although it can't open PDF files, OpenOffice can save valid PDF files that you can later edit in Adobe Acrobat. Furthermore, OpenOffice Draw can open JPG files and export them as PDF files natively.