>> PR1 file

PR1 file format description

Many people share .pr1 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .pr1 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .pr1 files.

3 filename extension(s) found in our database.

.pr1 - CheckMark Payroll Employees Data

The PR1 data files are related to CheckMark Payroll. PR1 file is a CheckMark Payroll Employees Data. CheckMark Payroll is a complete solution designed for do-it-yourself payrolls.

CheckMark Payroll
Data files
- / -
CheckMark Payroll Employees Data related extensions:
Active Safety System Communication Log
Active Safety System Internal Log
UFED Physical Analyzer Data
V-Ray Material Data
CEN EN 13032 Photometric Data
WinNonlin Workbook Object

.pr1 - Packrat 4.0 Data

The PR1 data files are related to Packrat 4.0. PR1 file is a Packrat 4.0 Data. Polaris Packrat is a task and personal information manager software for Microsoft Windows. The Packrat 4.0 seems to be no longer supported.

Packrat 4.0
Data files
- / -
Packrat 4.0 Data related extensions:
iOS Device Identification Data
Su3De Data
Vector CAD Template
Moray 3D Model
GTXRaster CAD Data
Nintendo DS Particles Data

.prx - KNX ETS v2 Project

The PRX project files are related to KNX ETS. PRX file is a KNX ETS v2 Project. ETS stands for Engineering Tool Software; a manufacturer independent configuration software tool to design and configure intelligent home and building control installations with the KNX system

Project files
- / -
pr1, pr2
KNX ETS v2 Project related extensions:
Unreal Enigine Project
KNX ETS v3 Project
Roxio VideoWave 3D Movie Project
Visual Studio JavaScript Project
NI Multisim 14 Project
NI Multisim 13 Project

Naturally, other applications may also use the .pr1 file extension. Even harmful programs can create .pr1 files. Be especially cautious with .pr1 files coming from an unknown source!

Can't open a .pr1 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 .pr1 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

p1, pd1, pf1, pg1, pr, prl, prq, prw, pt1, rp1

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

InstallShield Prerequisites
Artlantis Shader Preview
GP-Pro EX Project
E-Sword v8 Prayer Request
Atari ST Graphics Processor Image
Squeak Project

Operating systems currently supports the following operating systems:

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

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If you have useful information about the .pr1 file format, then write to us!