{
 "id": "radiance-rgbe-image-format",
 "name": "Radiance RGBE Image Format",
 "category": "image",
 "identifiers": {
  "extensions": [
   "hdr",
   "rgbe",
   "xyze",
   "pic",
   "rad"
  ],
  "mime": [
   "image/vnd.radiance"
  ],
  "puid": [
   "fmt/591"
  ],
  "wikidata": [
   "Q3928271"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "233f52414449414e43450a",
    "notes": "Radiance"
   }
  ],
  "signatures": [
   {
    "name": "Radiance",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "233f52414449414e43450a"
     }
    ]
   }
  ]
 },
 "status": "writable",
 "summary": "Radiance defined an image format for storing HDR images, now described as RGBE image format. RGBE stores pixels as one byte each for RGB (red, green, and blue) values with a one byte shared exponent. Thus it stores four bytes per pixel.",
 "tools": [
  {
   "name": "ImageMagick",
   "url": "https://imagemagick.org",
   "license": "ImageMagick License",
   "open_source": true,
   "reads": true,
   "writes": true
  },
  {
   "name": "ABViewer",
   "url": "https://cadsofttools.com/products/abviewer/",
   "reads": true,
   "writes": false
  },
  {
   "name": "Abydos",
   "url": "https://www.wikidata.org/wiki/Q133445760",
   "reads": true,
   "writes": false,
   "license": "GNU Lesser General Public License",
   "open_source": true
  },
  {
   "name": "Adobe After Effects",
   "url": "https://www.adobe.com/products/aftereffects",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "Affinity Photo",
   "url": "https://affinity.serif.com/de/photo/",
   "reads": true,
   "writes": true
  },
  {
   "name": "Axialis IconWorkshop",
   "url": "http://www.axialis.com/iconworkshop/",
   "reads": true,
   "writes": true
  },
  {
   "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": "Godot",
   "url": "https://godotengine.org/",
   "reads": true,
   "writes": false,
   "license": "MIT License",
   "open_source": true
  },
  {
   "name": "Q129793",
   "url": "https://www.adobe.com/products/photoshop.html",
   "reads": true,
   "writes": false,
   "license": "shareware"
  },
  {
   "name": "Q130252332",
   "url": "https://sorairolake.github.io/qrtool/",
   "reads": true,
   "writes": false,
   "license": "Apache Software License 2.0 / Creative Commons Attribution 4.0 International / MIT License",
   "open_source": true
  },
  {
   "name": "Q141647655",
   "url": "https://getartcraft.com/apps/photocraft",
   "reads": true,
   "writes": true,
   "license": "Apache Software License 2.0 / MIT License",
   "open_source": true
  },
  {
   "name": "Radiance",
   "url": "http://radsite.lbl.gov/radiance/HOME.html",
   "reads": true,
   "writes": true
  },
  {
   "name": "Zoner Photo Studio",
   "url": "http://www.zoner.com",
   "reads": true,
   "writes": true
  }
 ],
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/Radiance_HDR",
   "kind": "wiki"
  },
  {
   "name": "PRONOM fmt/591",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/591",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q3928271",
   "url": "https://www.wikidata.org/wiki/Q3928271",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "converters",
   "ffw",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "conversions": [
  {
   "to": "portable-network-graphics",
   "tool": "ImageMagick",
   "command": "convert in.hdr 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.hdr 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.hdr out.jpg",
   "fidelity": "lossy",
   "losses": "Lossy compression.",
   "url": "https://imagemagick.org"
  },
  {
   "to": "webp",
   "tool": "ImageMagick",
   "command": "convert in.hdr out.webp",
   "fidelity": "lossy",
   "losses": "Lossy compression.",
   "url": "https://imagemagick.org"
  },
  {
   "to": "gif",
   "tool": "ImageMagick",
   "command": "convert in.hdr out.gif",
   "fidelity": "lossy",
   "losses": "Reduced to 256 colours.",
   "url": "https://imagemagick.org"
  }
 ],
 "aliases": [],
 "structure": [],
 "parsers": [],
 "samples": [],
 "claims": [],
 "verification": []
}