Opening PSN Files

The PSN file type is primarily associated with CATIA V5.

PSN	File extension: PSN
	File type:	session file

What is a PSN file?

PSN files mostly belong to CATIA V5. The PSN file is a CATIA V5 session file that stores product structure information during an active design session. It captures a snapshot of the product’s assembly and hierarchy at a given moment in the CATIA environment.
Usage Details:

File Content: Contains temporary design and structure data used to maintain session context.

Functionality: Allows CATIA V5 to resume work with accurate product data and connections between parts.

Accessibility: Can only be opened and viewed using CATIA V5 or compatible software.

FilExt.com tip: If you work with these sessions, it is best to use CATIA V5 as it reads the file structure correctly and updates it during your design process.

How to open a PSN file

You need a suitable software like CATIA V5 to open a PSN file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your PSN file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a PSN file directly in the browser:. Just drag the file onto this browser window and drop it.

Online PSN Text Viewer

Choose your .psn file to analyze

or drag and drop it here

Online File Viewer

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PSN file extension format:

To find out what program is needed to open PSN files, you need to determine the file format. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Below is our analysis of the PSN files:

PSN is rarely used as a file extension and includes different formats for different programs. However, the following two file formats are common:

• 25% of all PSN files are associated with PMD 85 emulator snapshot. Most of these files are 72 bytes to 700 KB in size. Several words can almost always be found in the files, e.g. FILE_DESCRIPTION, FILE_NAME, HEADER;, ISO-10303-21;, tmp_psn and VPM graph session.
• 10% of all PSN files start with the magic bytes {PP;, which are always the first bytes of this file format. These files contain text and words, not binary data. PSN files are between 390 bytes and 650 bytes in size. The following keywords are characteristic: SK_Happy and {PP;SK}. The file name 0beat.psn is typical for these files.

All other PSN files (65%) have different formats, the following 3 formats exist: DOC. The category is desktop. If you want to find out what your PSN file contains, drag and drop it onto this page.