The .ppm file extension is used for Portable PixMap format files and is intended to be an intermediate format that can be used in the development and conversion of other file formats. This format was specifically designed so that it could easily be exchanged between various platforms. It is very simple but not very storage efficient. Before the PPM format was introduced, Jef Poskanzer invented the PBM format in the year 1980 for transmission of monochrome bitmaps as ASCII text in email messages. He also developed a tool library for easy conversion of the PBM files to other graphical formats and vice versa. This library was called Pbmplus and was released in 1988. Later Poskanzer developed the PPM format along with the PGM format and the requisite tools that were added to Pbmplus.
The JP2 file extension, also known as JPEG2000, was created by the JPEG Committee in the year 2000. The JP2 succeeded the first JPEG Standard in 1992 which was cosine transform based. It features the use of a "wavelet-base", unlike its predecessor JPEG standards. This file format uses a different image compression method. The compression method involves altering certain sections of the image, in terms of quality reduction. This method of compression ensures smaller file sizes and optimal storage. The JP2 file format has made several improvements over the JPEG Standard since 1992. The JP2 files can make use of both the lossless and lossy compression techniques.
FreeFileConvert uses tuned encoding for PPM to JP2 conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload PPM files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized JP2 results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent JP2 audio with dependable progress tracking.
A .ppm extension file comprises of two parts which include the header and the image related data. The header, in turn, is distributed into three parts that are demarcated by line feeds. The first line comprises of the magical PPM identifier which can either be P3 for the ASCII version or P6 for the binary version, and the next line has the image's height and width displayed in ASCII characters and the last line indicates the maximum color value of the pixels. The image data formatting is dependent on the magical identifier, given in the first line of the header. Each pixel consists of 3 decimal values ranging from 0 to the specified maximum value written in ASCII characters. The 0 in the decimal values denotes that the color is not present or is turned off and the maximum value denotes that the color is at its maximum level. Conventionally the image data is stored in a left to right and top to bottom order with each pixel being stored as a byte. The usual RGB (Red ñ Green ñ Blue) order is followed to store the components.
JP2 files are compress bitmap images. They support ICC profiles, grid resolution information handling, lossy compression, and lossless compression. JP2 files are often viewed similar to JPEG files and are smaller than JPEG files in terms of file size. The JP2 file extension is a superior file format compared to the JPEG in terms of sophistication. JP2 files work with most modern image viewers and image editing applications. It may not be compatible with image editing programs or viewers released before 2014 since it was released recently.
Upload your image file in the PPM format from your device, Dropbox, or Google Drive.
Select JP2 as the output format and click Convert. Adjust optional settings if needed.
Download the converted image file. Each file stays available for up to 5 downloads.