{
    "mode": "info",
    "parameter": "ilbmtoppm",
    "section": "",
    "url": "https://www.chedong.com/phpMan.php/info/ilbmtoppm/json",
    "generated": "2026-07-05T13:09:04Z",
    "synopsis": "ilbmtoppm [-verbose] [-ignore<chunkID>] [-isham|-isehb] [-adjustcolors]\n[ILBMfile]",
    "sections": {
        "NAME": {
            "content": "ilbmtoppm - convert an ILBM file into a portable pixmap\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "ilbmtoppm [-verbose] [-ignore<chunkID>] [-isham|-isehb] [-adjustcolors]\n[ILBMfile]\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "Reads an IFF ILBM file as input.  Produces a portable pixmap as output.\nSupported ILBM types are:\n\nNormal ILBMs with 1-16 planes.\n\nAmiga ExtraHalfbrite (EHB)\n\nAmiga HAM with 3-16 planes.\n\n24 bit.\n\nMultiplatte (normal or HAM) pictures.\n\nColor map (BMHD + CMAP chunk only, nPlanes = 0).\n\nUnofficial direct color.\n1-16 planes for each color component.\n\nChunks used:\nBMHD, CMAP, CAMG (only HAM & EHB flags used), PCHG, BODY unoffi-\ncial DCOL chunk to identify direct color ILBM\n\nChunks ignored:\nGRAB, DEST, SPRT, CRNG, CCRT, CLUT, DPPV, DRNG, EPSF\n\nOther chunks (ignored but displayed in verbose mode):\nNAME, AUTH, (c), ANNO, DPI\n\nUnknown chunks are skipped.\n",
            "subsections": []
        },
        "OPTIONS": {
            "content": "",
            "subsections": [
                {
                    "name": "-verbose",
                    "content": "Give some information about the ILBM file.\n"
                },
                {
                    "name": "-ignore <chunkID>",
                    "content": "Skip a chunk.  <chunkID> is the 4-letter IFF chunk identifier of\nthe chunk to be skipped.\n\n-isham | -isehb\nTreat  the  input file as a HAM or ExtraHalfbrite picture, even\nif these flags or not set in the CAMG chunk (or if there  is  no\nCAMG chunk).\n"
                },
                {
                    "name": "-adjustcolors",
                    "content": "If  all  colors  in the CMAP have a value of less then 16, ilbm-\ntoppm assumes a 4-bit colormap and gives a warning.   With  this\noption the colormap is scaled to 8 bits.\n"
                }
            ]
        },
        "BUGS": {
            "content": "The  multipalette PCHG BigLineChanges and Huffman decompression code is\nuntested.\n",
            "subsections": []
        },
        "REFERENCES": {
            "content": "Amiga ROM Kernel Reference Manual - Devices (3rd Ed.)\nAddison Wesley, ISBN 0-201-56775-X\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "ppm(5), ppmtoilbm(1)\n",
            "subsections": []
        },
        "AUTHORS": {
            "content": "Copyright (C) 1989 by Jef Poskanzer.\nModified October 1993 by Ingo Wilken (Ingo.Wilken@informatik.uni-olden-\nburg.de)\n\n04 October 1993                   ilbmtoppm(1)",
            "subsections": []
        }
    },
    "summary": "ilbmtoppm - convert an ILBM file into a portable pixmap",
    "flags": [
        {
            "flag": "",
            "long": null,
            "arg": null,
            "description": "Give some information about the ILBM file."
        },
        {
            "flag": "",
            "long": null,
            "arg": null,
            "description": "Skip a chunk. <chunkID> is the 4-letter IFF chunk identifier of the chunk to be skipped. -isham | -isehb Treat the input file as a HAM or ExtraHalfbrite picture, even if these flags or not set in the CAMG chunk (or if there is no CAMG chunk)."
        },
        {
            "flag": "",
            "long": null,
            "arg": null,
            "description": "If all colors in the CMAP have a value of less then 16, ilbm- toppm assumes a 4-bit colormap and gives a warning. With this option the colormap is scaled to 8 bits."
        }
    ],
    "examples": [],
    "see_also": [
        {
            "name": "ppm",
            "section": "5",
            "url": "https://www.chedong.com/phpMan.php/man/ppm/5/json"
        },
        {
            "name": "ppmtoilbm",
            "section": "1",
            "url": "https://www.chedong.com/phpMan.php/man/ppmtoilbm/1/json"
        }
    ]
}