The format CR2 (Canon raw version 2) was developed in 2004 by Canon Inc. with the purpose of storing digital images. The main difference between CR2 and more common formats like JPG or PNG is that CR2 does not offer ready to view pictures. Raw formats like CR2 are advantageous mainly because CR2 enables the user to post process the image easier than ready to view without worrying about the quality loss. CR2 files are based on the TIFF (Tagged Image file) file specification. CR2 format as well as other raw images, can be viewed using programs like Adobe Photoshop, Paint Shop Pro, digiKam etc.
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.
FreeFileConvert uses tuned encoding for CR2 to PPM conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload CR2 files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized PPM 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 PPM audio with dependable progress tracking.
CR2 format is the upgraded version of CRW, it offers the best quality to size ratio. What makes it so different from other formats is the fact that all the colours are recorded either in 12 or 14 bits and lossless compression is being used. The primary benefit of using CR2 format is that it allows professional photographers and designers the ability to modify pictures without any drawbacks, unlike some other file formats.
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.
Upload your image file in the CR2 format from your device, Dropbox, or Google Drive.
Select PPM 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.