File Extension Database

Open P21 File

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

JSDAI

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

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

We researched and learned that the best way to open P21 file is to find a P21 file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a P21 file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open P21 file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as P21 file opener then try to search online for "P21 viewer", "application to open P21 file" or "open P21 file" queries in the search engine you like.
Install the application you found and check if it can open P21 file

How Can I Open P21 File on Mac OS

We recommend to find a P21 file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a P21 file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with P21 file.
If you know the Mac OS application which can work as P21 file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open P21 file in it.
If you don't know the application which can open P21 file then try to search for "P21 viewer", "application to open P21 file" or "read P21 file" queries in the online search engine you like.
Install the application you found and check if it can read P21 file

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:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded P21 file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "P21".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "P21 viewer", "P21 file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open P21 File on iPhone or iPad

To open P21 File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the P21 file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "P21". This way you can find apps which can open P21 files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "P21 viewer" or "P21 file" online in your favorite search engine.

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