What is the definition of a PSD file type?

A PSD file type, or Photoshop Document, is a proprietary file format developed by Adobe Systems for use in Adobe Photoshop. It is designed to store all the information of a Photoshop project, which includes not just the image data but also layers, masks, transparency, text, and other adjustments. This comprehensive support means that a PSD file retains all the editing capabilities of Photoshop, allowing users to make changes without degrading the quality of the image or losing any details.

This flexibility and full feature support make the PSD format particularly valuable for designers and photographers who need to revisit and modify their work. For instance, layers can be individually manipulated, making it easy to change the design without starting from scratch. The ability to use all Photoshop features in a PSD file significantly enhances its utility in professional workflows.

In contrast, other options, such as those describing a simplified graphic design format or low-resolution image format, do not capture the extensive capabilities of a PSD file. Additionally, while animated graphics may use different formats, they do not align with the primary function of a PSD file, which is meant for static image manipulation and editing. Thus, the answer highlighting the complete feature support of PSD files accurately reflects their purpose and usage in graphic design and photo editing.