Online PGM converter
Converting pictures and photos to pgm format is simple and free with our online converter.
How to convert a pgm file?
Step 1
Upload file
You can select the file you want to convert from your computer, Google Drive, Dropbox or simply drag and drop it onto the page.
Step 2
Select «to avs»
Choose avs or any of the other 200+ supported formats you'd like to convert to.
Step 3
Download your avs file
Please wait for the conversion to complete, then click on the download button to obtain your converted file in the avs format.
Best pgm converter tool
Convert avs Fast and easy
Simply drag and drop your avs files onto the webpage, and you'll be able to convert them to over 250 different file formats, all without having to register, provide an email address, or include a watermark.
Secure avs Conversion
As soon as you upload your avs files, we instantly delete them. Converted files are then deleted after 24 hours. Furthermore, we ensure that all file transfers are secure through advanced SSL encryption.
No Software Installation Required
You don't have to go through the hassle of installing any software. We handle all avs conversions in the cloud, which means that none of your computer's resources will be used in the process.
Portable Gray Map Image
| Extension | .pgm |
| Category | 🔵 images |
| Programs | 🔵 ACD Systems ACDSee 18 🔵 ACD System Canvas 15 🔵 Adobe Photoshop with plug-in 🔵 Corel PaintShop Pro X8 🔵 GIMP 🔵 Inkscape 🔵 Netpbm |
| Description | 🔵 PGM 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 details | 🔵 Portable 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. |
| Developer | 🔵 Jef Poskanzer |
| MIME type | 🔵 application/octet-stream |