README.md

libqpsd

PSD (Photoshop Document) & PSB (Photoshop Big) Plugin for Qt/C++ (Qt4/Qt5/Qt6)

This project is based on the Adobe Photoshop File Formats Specification

Support

If you like libqpsd or if it is useful to you, show your support by sponsoring my projects.

FEATURES

Supported Formats

• PSD
• PSB

Supported Compressions

• Raw
• RLE
• Zip without Prediction
• Zip with Prediction

Supported Color Modes

• Bitmap
• Grayscale
• Indexed
• RGB
• CMYK
• Multichannel
• Duotone
• Lab

Supported Depths

• 1-bit (Bitmap)
• 8-bits
• 16-bits (Note: 16-bit depth is scaled down to 8-bits)
• 32-bits (Tonemapping Algorithm, needed help!)

CONTRIBUTE

• If you have an existing PSD/PSB file with different color mode or compression. Feel free to send me an email. I need samples with zip-compressed layers (zip w/ or w/o prediction).
• If you want to contribute to the code, just fork the project and pull requests.

AUTHOR

• Ronie Martinez

CONTRIBUTORS

• Yuezhao Huang
• Markus Diem
• stepanp
• Eli Schwartz
• username asgohtals contributed PSB files for testing:
  • berlin-cmyk.psb
  • berlin-quadtone.psb
  • wall-small-Lab.psb

LIST OF SOFTWARE USING libqpsd

• nomacs
• EzViewer
• PhotoQt
• Seer
• for applications not included in the list, shoot me an email

REFERENCES

• Adobe Photoshop File Formats Specification
• RGB/XYZ Matrices
• ADOBE® PHOTOSHOP Help and tutorials
• Adobe® RGB (1998) Color Image Encoding