Support Why do some image files not have thumbnails in File Station? File Management - File Sharing Applied Models: All NAS Series Answer: Some image files may not use standard formats, and the Media Library will be unable to generate a thumbnail. Release date: 2014-10-28 Was it helpful? Yes. No. Thank you for your feedback. Thank you for your feedback. If you have any question, please contact firstname.lastname@example.org 17% of people think it helps.