The GNU Image Manipulation Program (GIMP) writes these tags in its native XCF (eXperimental Computing Facilty) images.
Tag ID Tag Name Writable Values / Notes 'header' Header - --> GIMP Header Tags 0x0011 Compression no 0 = None
1 = RLE Encoding
2 = Zlib
3 = Fractal0x0013 Resolution - --> GIMP Resolution Tags 0x0014 Tattoo no 0x0015 Parasites - --> GIMP Parasite Tags 0x0016 Units no 1 = Inches
2 = mm
3 = Points
4 = Picas
Index1 Tag Name Writable Values / Notes 9 XCFVersion no 'file' = 0
'v001' = 1
'v002' = 214 ImageWidth no 18 ImageHeight no 22 ColorMode no 0 = RGB Color
1 = Grayscale
2 = Indexed Color
Index4 Tag Name Writable Values / Notes 0 XResolution no 1 YResolution no
Tag ID Tag Name Writable Values / Notes 'exif-data' ExifData - --> EXIF Tags 'gimp-comment' Comment no 'gimp-image-metadata' XML - --> XMP XML Tags 'gimp-metadata' XMP - --> XMP Tags 'icc-profile' ICC_Profile - --> ICC_Profile Tags 'icc-profile-name' ICCProfileName no 'iptc-data' IPTCData - --> IPTC Tags 'jpeg-exif-data' JPEGExifData - --> EXIF Tags