Из PNM в BGP

PNM is a raster image category format. This is a bitmap bitmap created in Portable Any Map format. As you know, this format was intended from the very beginning to process some types of portable monochrome black and white images (PBM), color images (PPM) and grayscale images with shades of gray (PGM). Allows the inclusion of raster graphics data in the .PBM, .PGM or .PPM format. Such formats can provide an intermediate representation of data during the conversion of raster graphic files by different platforms. Separate applications support these three formats directly because they are defined as the PNM format. Able to be stored using binary data or ASCII text. PNM is the common format for the Netpbm package. It contains intermediate files that are used when it comes to converting several open source programs called Portable Bitmap. The PPM format was developed by J. Poskanzer. This is the easiest format for storing graphics. PNM files store one image. They do not apply compression. To view and process a bitmap image in PNM format, you can use programs such as GIMP, ImageMagick, Newera Graphics Converter Pro, XnViewMP. The same programs are able to convert images of this format.

BPG is a new graphic format developed by French programmer Fabrice Bellard, known as the creator of the popular programs FFmpeg, QEMU, LZEXE. The main task of the new format is to become a replacement, first of all, for the super popular JPEG image format. According to the developer, such a replacement is necessary where the file size or quality is of great importance. BPG (full name Better Portable Graphics) has a high compression ratio, which, when equal to JPEG quality, allows you to make files much smaller. Moreover, compression is possible without loss. Since the BPG format also supports animation, this gives rise to forecasts that this particular format can successfully compete and eventually replace the animated GIF on the Internet, since it surpasses it in all respects. So, GIF-animation of similar quality will have a much larger size. The BPG format is based on a subset of the HEVC open video compression technology. Mozilla research has shown that HEVC coding demonstrates clear superiority over other technologies. However, the HEVC standard does not have perfect patent purity, and therefore many browsers so far refrain from supporting BPG. Therefore, to download images by most web browsers, you need to use a special Javascript decoder.