Tag Description Notes
AVS AVS X image file
BMP Microsoft Windows bitmap image file
BMP24 Microsoft Windows 24-bit bitmap image file
CGM Computer Graphics Metafile
CMYK Raw cyan, magenta, yellow, and black bytes use -size command line option to specify width and height
DCX ZSoft IBM PC multi-page Paintbrush file
DIB Microsoft Windows bitmap image file
EPS Adobe Encapsulated PostScript file requires Ghostscript
EPS2 Adobe Level II Encapsulated PostScript file requires Ghostscript
EPSF Adobe Encapsulated PostScript file requires Ghostscript
EPSI Adobe Encapsulated PostScript Interchange format requires Ghostscript
FAX Group 3
FIG TransFig image format requires TransFig
FITS Flexible Image Transport System
FPX FlashPix Format use -DHasFPX when compiling; requires FlashPIX SDK
GIF CompuServe graphics interchange format 8-bit color
GIF87 CompuServe graphics interchange format 8-bit color (version 87a)
GRADATION gradual passing from one shade to another specify the desired shading as the filename (e.g. gradation:red-blue).
GRANITE granite texture.
GRAY Raw gray bytes use -size command line option to specify width and height
HDF Hierarchical Data Format use -DHasHDF when compiling
HISTOGRAM Histogram of the image
HTML Hypertext Markup Language with a client-side image map
JBIG Joint Bi-level Image experts Group file interchange format use -DHasJBIG when compiling
JPEG Joint Photographic Experts Group JFIF format use -DHasJPEG when compiling
MAP colormap intensities and indices
MATTE Raw matte bytes use -size command line option to specify width and height
MIFF Magick image file format
MPEG Motion Picture Experts Group file interchange format use -DHasMPEG when compiling
MTV MTV Raytracing image format
NETSCAPE Netscape 216 color cube.
NULL NULL image useful for creating blank tiles with montage
PBM Portable bitmap format (black and white)
PCD Photo CD the maximum resolution written is 512x768 pixels
PCL Page Control Language write only
PCX ZSoft IBM PC Paintbrush file
PDF Portable Document Format requires Ghostscript
PGM Portable graymap format (gray scale)
PICT Apple Macintosh QuickDraw/PICT file
PLASMA plasma fractal image. Specify the base color as the filename (e.g. plasma:blue-yellow). Use fractal to initialize to a random value (e.g. plasma:fractal).
PNG Portable Network Graphics
PNM Portable anymap
PPM Portable pixmap format (color)
PS Adobe PostScript file requires Ghostscript
PS2 Adobe Level II PostScript file requires Ghostscript
P7 Xv's visual schnauzer format
RAD Radiance image file
RGB Raw red, green, and blue bytes use -size command line option to specify width and height
RGBA Raw red, green, blue, and matte bytes use -size command line option to specify width and height
RLA Alias/Wavefront image file read only
RLE Utah Run length encoded image file read only
SGI Irix RGB image file
SHTML Hypertext Markup Language with a client-side image map write only
SUN SUN Rasterfile
TEXT raw text file read only
TGA Truevision Targa image file
TIFF Tagged Image File Format use -DHasTIFF when compiling
TIFF24 24-bit Tagged Image File Format use -DHasTIFF when compiling
TILE tile image with a texture read only
UYVY 16bit/pixel interleaved YUV use -size command line option to specify width and height
VICAR read only
UIL X-Motif UIL table
VID Visual Image Directory
VIFF Khoros Visualization image file
X select image from X server screen
XC constant image of X server color use -size command line option to specify width and height
XBM X Windows system bitmap, black and white only
XPM X Windows system pixmap file (color)
XWD X Windows system window dump file (color)
YUV CCIR 601 4:1:1 file use -size command line option to specify width and height


Support for some of the image formats require additional programs or libraries. README mentions where to find the related materials.


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