{
 "id": "adobe-photoshop-large-document-format",
 "name": "Adobe Photoshop Large Document Format",
 "category": "image",
 "identifiers": {
  "extensions": [
   "psb"
  ],
  "mime": [
   "image/vnd.adobe.photoshop"
  ],
  "puid": [
   "fmt/996"
  ],
  "wikidata": [
   "Q1437034"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "384250530002000000000000",
    "notes": "Adobe Photoshop PSB"
   },
   {
    "offset": 0,
    "hex": "384250530002"
   }
  ],
  "signatures": [
   {
    "name": "Adobe Photoshop PSB",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "384250530002000000000000"
     }
    ]
   }
  ]
 },
 "status": "writable",
 "summary": "Adobe Photoshop is a raster graphics editor developed and published by Adobe Systems. The Large Document Format supports documents of up to 300,000 pixels in any dimension as opposed to the PSD limit of 30,000 pixels.",
 "tools": [
  {
   "name": "ImageMagick",
   "url": "https://imagemagick.org",
   "license": "ImageMagick License",
   "open_source": true,
   "reads": true,
   "writes": true
  },
  {
   "name": "Affinity Photo",
   "url": "https://affinity.serif.com/de/photo/",
   "reads": true,
   "writes": false
  },
  {
   "name": "Clip Studio Paint",
   "url": "https://www.clipstudio.net/th/",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "Converseen",
   "url": "https://converseen.fasterland.net/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 3.0",
   "open_source": true
  },
  {
   "name": "ExifTool",
   "url": "https://exiftool.org/",
   "reads": true,
   "writes": false,
   "license": "Artistic License / GNU General Public License, version 1.0 or later",
   "open_source": true
  },
  {
   "name": "MediaRich Server",
   "url": "https://equilibrium.com/mediarichserver/",
   "reads": true,
   "writes": false
  },
  {
   "name": "PhotoRec",
   "url": "http://www.cgsecurity.org/wiki/PhotoRec",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License",
   "open_source": true
  },
  {
   "name": "Q129793",
   "url": "https://www.adobe.com/products/photoshop.html",
   "reads": true,
   "writes": false,
   "license": "shareware"
  },
  {
   "name": "Q141647655",
   "url": "https://getartcraft.com/apps/photocraft",
   "reads": true,
   "writes": true,
   "license": "Apache Software License 2.0 / MIT License",
   "open_source": true
  },
  {
   "name": "SAI",
   "url": "https://www.systemax.jp/en/sai",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "Zoner Photo Studio",
   "url": "http://www.zoner.com",
   "reads": true,
   "writes": true
  }
 ],
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/PSB",
   "kind": "wiki"
  },
  {
   "name": "PRONOM fmt/996",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/996",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q1437034",
   "url": "https://www.wikidata.org/wiki/Q1437034",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "converters",
   "ffw",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "conversions": [
  {
   "to": "portable-network-graphics",
   "tool": "ImageMagick",
   "command": "convert in.psb out.png",
   "fidelity": "lossless",
   "losses": "Pixels kept; some metadata, colour profiles or layers may be dropped.",
   "url": "https://imagemagick.org"
  },
  {
   "to": "tagged-image-file-format",
   "tool": "ImageMagick",
   "command": "convert in.psb out.tif",
   "fidelity": "lossless",
   "losses": "Pixels kept; some metadata, colour profiles or layers may be dropped.",
   "url": "https://imagemagick.org"
  },
  {
   "to": "jpeg-file-interchange-format-1-02",
   "tool": "ImageMagick",
   "command": "convert in.psb out.jpg",
   "fidelity": "lossy",
   "losses": "Lossy compression.",
   "url": "https://imagemagick.org"
  },
  {
   "to": "webp",
   "tool": "ImageMagick",
   "command": "convert in.psb out.webp",
   "fidelity": "lossy",
   "losses": "Lossy compression.",
   "url": "https://imagemagick.org"
  },
  {
   "to": "gif",
   "tool": "ImageMagick",
   "command": "convert in.psb out.gif",
   "fidelity": "lossy",
   "losses": "Reduced to 256 colours.",
   "url": "https://imagemagick.org"
  }
 ],
 "aliases": [],
 "structure": [],
 "parsers": [],
 "samples": [],
 "claims": [],
 "verification": []
}