PSD (Photoshop document)
Also known as: Photoshop document, .psd file, photoshop file
PSD (Photoshop Document) is Adobe Photoshop’s native file format. It preserves a full editable project — layers, masks, text, smart objects, and effects — which makes it powerful for editing but much larger than a flattened JPEG or PNG export.
- Photoshop’s native layered project format
- Preserves layers, masks, text, and effects
- Much larger than a flattened JPEG or PNG export
What a PSD stores
A PSD is a working file, not a finished image. It keeps every layer, mask, adjustment, and editable text intact so you can return and change anything later. That editability is why designers archive PSDs.
All of that structure has a storage cost. A PSD with many high-resolution layers can be far larger than the flat JPEG or PNG you export from it, and a folder of project files can quietly take up a lot of disk space.
Keeping vs exporting
Keep the PSD only while a project is live or likely to be revised. Once a design is final, export the version you actually use — usually a JPEG or PNG — and archive or delete the heavy source file to save space.
Large PSDs are also a common cause of bloated cloud storage and backups, since editors and sync apps often hold multiple saved versions.