Convert PPM to JPG - online and free
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PPM (Image)
| File extension | .ppm |
| Category | Image File |
| Description | The portable pixmap format (PPM) is an image format designed to be easily exchanged between platforms which is used by Netpbm - an open-source package of graphics programs and a programming library, used mainly in the Unix world. The format is a lowest common denominator color image file format and is highly inefficient, containing a lot of information the human eye can’t even discern. The precursor to the PPM format was the PBM format which was invented by Jef Poskanzer in the 1980s as a format that allowed monochrome bitmaps to be transmitted within an email message as plain ASCII text, allowing it to survive any changes in text formatting. By the end of 1988, Poskanzer had developed the PGM and PPM formats along with their associated tools and added them to Pbmplus. The final release of Pbmplus was December 10, 1991. |
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| Technical Details | A PPM file consists of a sequence of one or more PPM images. There are no data, delimiters, or padding before, after, or between images. Each PPM image consists of the following:
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| Developed by | Jef Poskanzer |
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JPG (Image)
| File extension | .jpg |
| Category | Image File |
| Description | JPG's are often used for web sites and email as they are generally smaller file sizes as they are lossy meaning that some image quality is lost when the JPG is compressed and saved. The resultant 'lossy' file means that quality can never be recovered. The JPG format is often used in digital camera memory cards. The JPG file is a great format as it often manages to compress files to 1/10 of the size of the original file which is especially good for saving on bandwidth. |
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| Technical Details | JPG is a graphical file format for editing still images, it offers a symmetrical compression technique which is processor intensive and time consiming in both compression and decompression. JPEG is a joint standard of the International Telecommunications Union (ITU-T T.81) and the International Organization for Standardization (ISO 10918-1). JPEG involves a lossy compression mechanism using discrete cosine transform (DCT). Compression rates of 100:1 can be achieved, although the loss is noticeable at that level. Compression rates of 10:1 or 20:1 yield little degradation in image quality. |
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| Developed by | The JPEG Committee |
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Convert PPM file
Using Zamzar, it is possible to convert PPM files to a variety of other formats
- ppm to ai (Adobe Illustrator Artwork)
- ppm to bmp (Windows bitmap)
- ppm to eps (Encapsulated PostScript)
- ppm to gif (Compuserve graphics interchange)
- ppm to jpg (JPEG compliant image)
- ppm to pcx (Paintbrush Bitmap Image)
- ppm to pdf (Portable Document Format)
- ppm to png (Portable Network Graphic)
- ppm to tga (Truevision Targa Graphic)
- ppm to tiff (Tagged image file format)
- ppm to wbmp (Wireless Bitmap File Format)
- ppm to webp (Lossily compressed image file)