PNJ file format description

Many people often share .pnj files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .pnj files. To address this issue, we have created this page to offer assistance and guidance on handling .pnj files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .pnj files.

Our aim is to simplify the process and promote seamless use of the .pnj file format.

1 filename extension(s) found in our database.

.pnj - MNG Portable Network JPEG Format Image

The PNJ graphic files are related to MNG. The PNJ file is a MNG Portable Network JPEG Format Image. Multiple-image Network Graphics (MNG) is a graphics file format for animated images. PNJ is a MNG sub-format for encapsulating JPEG images.

Graphic files
- / -
MNG Portable Network JPEG Format Image related extensions:
Atari ST DeskPic Image
Epson RAW Image
Olympus Microscope OIR Image
ADEX Corporation Bitmap
Computer Graphics Metafile
AtariTools-800 Player Data

Naturally, other applications may also use the .pnj file extension. Even harmful programs can create .pnj files. Be especially cautious with .pnj files coming from an unknown source!

Can't open a .pnj file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .pnj file extension is often given incorrectly!

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

nj, npj, pbj, phj, pj, pjn, pmj, pn, pnh, pni, pnk, pnm, pnu, pny

Is it possible that the filename extension is misspelled?

There is a possibility that the .pnj filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .pnj:

Pinecone Source Code
Project64 Saved State File
Navicat for MySQL Batch Job
Peernet Label Designer Data
Adobe Project ROME Plug-in Archive
Spectrum Projection Metadata

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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