   PSD file format specifications (CS3)
  I am working on a program that will have the option to save graphics files to the Photoshop file format. The problem is that I can not find any file format specifications other than the one for the Photoshop 6 version. I want the one for one of the CS versions.Does anyone know where to find this document, if there is any available for the public, or do you know if there is a tiny library I can use to save my pixel data to the PSD file format?Thank you for your help!- Klarre   
  I could be wrong, but I would imagine that's a proprietary format for which they don't release the doc's openly.   ;Here's a summary.   ;  AFAIK, the PSD file format between 6 and CS1 didn't change at all. I think CS2 added 32 bit per channel support. While CS3 has enhanced HDR support, I don't believe it changed the file format.In any case, the only way I know of to get a current version of the PSD file format is to sign up to get the Adobe Photoshop Advanced SDK. I believe it's currently free, but you do have to sign an NDA. For a third party library, you can try ImageMagick; it supports PSD files, but I don't know what versions.   ;  Thanks Oluseyi for the link. Just what I wanted.Will check out ImageMagick which will probably be a good complement to Oluseyi link and my reversing skills.Thanks a lot guys! :)/Klarre   ;  The file format Oluseyi linked to isn't the most recent version of the PSD format. Ex: it doesn't support 32-bit per channel, and only shows the RLE compression.   