ACDSee is photo viewing, editing, and management software developed by ACD Systems. Early versions of the Photo Editor software could save a image with all editing intact using the APD extension. Later versions of Photo Editor and Ultimate software would save images and layers with the ACDC extension.
APD & ACDC image formats are in fact TIFF images extended with additional features.
- ↑ https://en.wikipedia.org/wiki/ACDSee
- ↑ https://support.acdsee.com/en/support/solutions/articles/60000474856-why-does-acdsee-launch-when-i-double-click-on-my-photo-editor-file-
- ↑ https://help.acdsystems.com/en/acdsee-ultimate-8/Content/1Topics/5_Process_mode/Editing/Layered%20Editor/IDDH_LAYERED_EDITOR.htm
- ↑ https://www.acdsee.com/en/support/file-formats