Interesting detail, > Despite some use in other programs, the use of XCF as a data interchange format is not recommended by the developers of GIMP, since the f

Interesting detail, > Despite some use in other programs, the use of XCF as a data interchange format is not recommended by the developers of GIMP, since the format reflects GIMP's internal data structures and there may be minor format changes in future versions. Instead, a collaborative effort between the developers of GIMP and Krita is underway to design a standardised raster file format called OpenRaster (modelled on the OpenDocument format) for future use in both applications, and likely in others also.