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JPG to PGM converter

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OnlineConvertFree converts your images for free. Convert your jpg to pgm online with no software to install.

How to convert jpg to pgm?

How to convert pgm to jpg?

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Step 1

Upload jpg-file

Select jpg file, which you want to convert, from your computer, Google Drive, Dropbox or drag and drop it on the page.
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Step 2

Convert jpg to pgm

Select pgm or any other format, which you want to convert.
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Step 3

Download your pgm-file

Wait till your conversion process will be completed and click download converted pgm file.

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Just drop your jpg files on the page to convert pgm or you can convert it to more than 250 different file formats without registration, giving an email or watermark.
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Joint Photographic Experts Group JFIF format

File extension.jpg
File categoryimages
Programs
Microsoft Windows Photo Gallery Viewer
Adobe Photoshop
Adobe Suite
Apple Preview
Corel Paint Shop Pro
Most web browsers
DescriptionJPG – is a popular graphic format characterized by a high image compression rate, which leads to a decrease in image quality. It uses the technology of encoding smooth color renditions, providing the ability to frequently reduce the amount of data during the image's recording. Because of the small size, it is requested by the owners of websites, allowing you to save the traffic effectively. It is also frequently used in memory cards of digital video cameras. The JPG algorithm is optimally suitable for compressing photographs and pictures in which realistic scenes with little contrast of colors are present. It is not recommended to use this format for compression of drawings and various kinds of graphics. A strong contrast between several near located pixels provokes the appearance of visible artifacts.
Technical detailsThe procedure for compressing the digital images in JPG format is carried out in several stages. First, the photo is transformed into a color space YCbCr, and then it is divided into squares to determine the upper range of the color spectrum. Finally, the colors and brightness are coded. JPEG uses a "lossy" compression system and discrete cosine transform technology. The format acts simultaneously as the standard of ISO and the International Telecommunication Union. The file compression ratio is in the range from 10:1 to 100:1. In this case, the reduction in image quality can vary from insignificant to substantial.
DeveloperThe JPEG Committee
MIME type
image/jpeg

Portable Gray Map Image

File extension.pgm
File categoryimages
Programs
ACD Systems ACDSee 18
ACD System Canvas 15
Adobe Photoshop with plug-in
Corel PaintShop Pro X8
GIMP
Inkscape
Netpbm
DescriptionPGM file format was developed alongside the open-source Netpbm package of graphics program. Developed by Jef Poskanzer in 1988, PGM was a format for storing grayscale images and supporting bitmap. The PGM file format is forward compatible with recent graphics editing software like Corel PaintShop Pro X4, ACDSee Photo Manager 14, and ACD Systems Canvas 15. Being a plain text format, PGM can be edited using any available text editor, and thus survives the quintessential changes that image files undergo when transmitted via email. PGM files come in two types, only differentiated by magic numbers – P2 and P5, which helps graphics editor software identify the data encryption standard.
Technical detailsPortable Gray Map Images can be stored away with each pixel taking up memory space of either 8 or 16 bits. There are two major sections in the plain text string of a PGM file – the header and image data. The header starts with the magic number, followed by characters indicating image width, image height, maximum grayscale shade value – never exceeding 65.536, all sandwiched by whitespaces. Though used mainly on the UNIX-based operating system, being open-source has earned the PGM file compatibility with macOS and Windows.
DeveloperJef Poskanzer
MIME type
application/octet-stream

FAQ

❓ How can I convert jpg to pgm?
Firstly, select a jpg to pgm file you want to convert or drag and drop it. Secondly, select a format you want to convert your file to. Then click convert and wait until your file is converted
⏳ How long should I wait to convert jpg to pgm?
Images conversion usually takes a few seconds. You will convert jpg to pgm very quickly.
🛡️ Is it secure to convert jpg to pgm on OnlineConvertFree?
Sure! We delete your uploaded and converted files, so nobody has access to your information. All types of conversion on OnlineConvertFree (including jpg to pgm) is 100% safe.
📱 Can I convert jpg to pgm without software installation?
Absolutely! OnlineConvertFree doesn’t require installation. You can convert any files (including jpg to pgm) online on your computer or mobile.