JPM is a JPEG2000 bitmap category file format. The JPEG 2000 Part 6 standard defines that the .jpm extension refers to the JPEG 2000 Composite Image File Format. The JPEG2000 graphic format is a new standard that appeared in 2000 as an update to the JPEG format. He uses a type of technology called wavelet compression, which provides the best ratio of size and quality. The JPM format (i.e., the JPEG 2000 Multi-layer Image Format, ISO 15444-6) was developed for documents that have multiple pages and can be processed as a multi-page photo converter. The purpose of the JPEG 2000 Part 6 composite image format is to work primarily with documents and facsimile images. Compared to regular JPEG 2000 images, a .jpm file is a composite image with many layers. This file can have many pages. Moreover, each such page can have several raster objects. Moreover, in different encodings (JPEG, JPEG 2000, JBIG). They are located in a certain way and make up a single whole. JPM files are used as “digital originals” that store scanned copies of documents and other images and / or texts.
XCF is a file format from the raster graphics category developed by GIMP. The specified extension is considered the standard image format specifically for the GIMP graphics editor. In its characteristics, XCF is very similar to the PSD raster graphics format, which is native to Photoshop. XCF files do not support the function of saving the "history of cancellations", however, for other characteristics, they are highly praised by experts. So, they retain channels, transparency, layers, guides. Data compression in this format is lossless. The name of the format is associated with the organization of experimental computing (eXperimental Computing Facility) of the University of California, Berkeley.