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.
EMF is a vector graphics file for Windows operating system applications. Most image editing applications recognize it. The format was developed in 2007 by Microsoft. This is an integral part of Windows and a version of the original Windows Metafile Format (WMF), extended and expanded. It only supports 16-bit data. Image color data is stored in RGB format. There is no support for CMYK data. EMF (i.e. Enhanced Windows Metafile) can be used as a graphical language for printer drivers. It is used, in particular, to store collections of graphic images of Microsoft Clip Gallery. WMF also found application when it is necessary to transfer information through the clipboard (clipboard). From the Windows operating system, writing and reading to a file of this format can be carried out quickly and without problems. An EMF file is opened using a variety of utilities. For this, for example, IrfanView, CorelDRAW, Inkscape and GIMP are suitable. EMF files, like WMF, have a list of entries. Each of them is a specific team for drawing. Arguments that were 16-bit in WMF became 32-bit in EMF. EMF has features that introduce new arguments.