PSB File Documentation

Overview

Feature Value
Format Name Photoshop Large Document Format
File Extension .psb
Developed by Adobe Systems
Description Designed to support images larger than 30,000 pixels in any dimension, with a maximum limit of 300,000 pixels.
Maximum File Size 4 Exabytes
Color Modes Supported Bitmap, Grayscale, Indexed Color, RGB, CMYK, Multichannel, Duotone, Lab Color
Layers Supports an extensive number of layers.
Layer Masks Supported
Adjustment Layers Supported
Transparency Supported
Alpha Channels Supported
Spot Colors Supported
MIME Type image/vnd.adobe.photoshop
Compression Supports both uncompressed and compressed formats.
Metadata Supports extensive metadata including EXIF, IPTC, XMP, and more.
Editable Text Layers Supported
Smart Objects Supported
3D Layers Supported
Video Layers Supported
Compatibility PSB files are compatible with Adobe Photoshop CS or higher.
Usage Used for large-format printing, detailed large-scale digital paintings, and extensive composite imagery.