Opening a PEI File

The PEI file type is primarily associated with 7-Zip.

PEI	File extension: PEI
	File type:	compressed game archive file

What is a PEI file?

PEI files mostly belong to 7-Zip.

PEI files serve two distinct roles. In one case, they are compressed archive files using the ZIP format. These files bundle game data—such as textures, models, and scripts—for use in Predator: Hunting Grounds. You can open these packages with archive tools like 7-Zip. For more on how these game packages work, visit the Unreal Engine website.

In another case, a PEI file is an embroidery design file. It stores stitch sequences and layout details for embroidery projects. Such files are handled by specialized editing software, like the Polysoft Packet Editor. Additional details are available at the PE Explorer website.

Usage tips:

If the file is a game package, try renaming it to .zip and use an archive manager to extract its contents.

If it is an embroidery file, open it with software that supports embroidery design formats.

FilExt.com note: The abbreviation PEI may stand for different terms in each context—possibly a Predator Engine Image in gaming or a Polysoft Editor Image for embroidery.

How do you open PEI files?

You need a suitable software like 7-Zip to open a PEI 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 PEI file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a PEI file directly in the browser:. Just drag the file onto this browser window and drop it.

Online PEI Text Viewer

Choose your .pei file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert PEI files:

7-Zip
See the previous paragraphs to learn more about the main application. PEI files are often referred to as 7-Zip compresseds because this type of file is primarily created or used by this software.
Performer Software (Encrypted Image) by Performer Software
This file is associated with images delivered from wedding photographer. You load the images into the presentation viewer and clients can compare one image to another based on thumbnails they choose. The format is used by various programs created by Performer Software. This file format is classified as Graphic.

PEI file format:

If you can determine the file format, the associated program can also be determined. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. If there are problems opening a file, you must first determine the file format used. Our examination of the PEI files comes to the following conclusion:

The PEI file extension is not common and includes different formats for the applicable programs. But the following two file formats are common:

60% of all PEI files use the ZIP format, so several files are compressed and saved in one PEI file. A PEI file includes 3 to 130 files. If you want to see the included files and images, simply rename the file extension to .zip and double-click it. The files are 4 MB to 51 GB in size, with a median of 5 GB. A common filename is data01.pei or data03.pei.
6% of all PEI files start with the magic bytes 0F 00 00 00, which are always the first bytes of this file format. These are binary files, so they do not contain words or text. Most of these files are 68 bytes to 70 bytes in size.

All other PEI files (34%) have no uniform format. Drag & drop your file here to see the file format and a preview of your PEI file!

Technical Data for PEI File Extension

File classification:

Compressed

Related files:

emb, dst, pes, exe, pdf, zip, rejg, rpgmvp, nic, pak, 7z, rar

a pei compressed game archive file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with PEI files

Associate the PEI file extension with the correct application.
Update your software that should actually open compressed game archive files. Because only the current version supports the latest PEI file format. Search, therefore, e.g. on the manufacturer website after an available 7-Zip update.
To make sure that your PEI file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
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