PSD

File Format
Name	PSD
Ontology	Electronic File Formats Graphics PSD
Extension(s)	.psd
PRONOM	x-fmt/92

PSD is the file format used by Adobe in its Photoshop program line. The format has gone through multiple versions, each being downwards (but not always upwards) compatible.

See Also

• PSB
• Photoshop Image Resources

Identification

PSD files begin with bytes '8' 'B' 'P' 'S' 0x00 0x01.

Specifications

• Adobe Photoshop File Formats Specification (current version)
  • Other versions (from archive.org): 2010-07, 2012-06, 2012-12, 2013-06
• PHOTOSDK.PDF - Adobe Photoshop 3.0.4 SDK
  • ADOBE.TXT - Photoshop 3.0.4 File Format
• PHOTOSHP.TXT - Adobe Photoshop 2.5 File Format

Resources

• Adobe Photoshop File Format Summary, from the Encyclopedia of Graphics File Formats
• Open-Source PSD import code from GIMP
• Photoshop you are a liar (video)