File Extension Database

Open P21 File

The P21 files have several associated uses, of a different nature, namely:


The P21 format and extension files belong to LKSoft's JSDAI. This type of P21 file is mainly associated with STEP-file, a format used to save 3D models and for the representation and / or exchange of product data in the industrial automation sector.

JSDAI is an Application Programming Interface (API) for reading, writing and runtime manipulation of object oriented data defined by an EXPRESS based data model.

Its raw content is 3D models, represented as standard ASCII ISO 10303-21 text, which defines the physical properties of 3D models. The data of a 3D model in a P21 file consists of several sections including a header, a description of the file, an outline, data.

This data is used primarily for industrial automation systems and integration purposes.


QuickPar, a tool for data verification and recovery on Windows operating systems, uses P21 files to store volume PAR recovery part 21.

QuickPar creates parity volumes using the Reed Solomon algorithm. This makes the P21 file a backup type file.

To open and operate on a P21 file, you must make sure of the file type, and then have one of the following software installed:

How Can I Open P21 File on Windows

How Can I Open P21 File on Mac OS

How Can I Open P21 File on Android

If you downloaded a P21 file on Android device you can open it by following steps below:

How to Open P21 File on iPhone or iPad

To open P21 File on iOS device follow steps below:

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P21 file article translations

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