Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .pa4

1 extension(s) and 1 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .pa4 file?
  • Which program can create the .pa4 file?
  • Where can you find a description of the .pa4 format?
  • What can convert .pa4 files to a different format?
  • Which MIME-type is associated with the .pa4 extension?
Vector NTI Protein Archive .pa4 file icon

Vector NTI Protein Archive

PA4 file is a Vector NTI Protein Archive. Vector NTI is a commercial bioinformatics software package.
Detailed description not available
Category: Data files
Application: Vector NTI
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Vector NTI DNA Data
Vector NTI DNA Archive
Vector NTI BLAST Archive
Vector NTI Assembly Project
Turbo Pascal for DOS Source Code .pa3 file icon

Turbo Pascal for DOS Source Code

PA3 file is a Turbo Pascal for DOS Source Code. Turbo Pascal is a software development system for the Pascal programming language running on CP/M, CP/M-86, and DOS, developed by Borland.
Detailed description not available
Category: Development files
Application: Turbo Pascal
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
pa4, pa5
Related extensions:
Pascal/Delphi Source Code
Turbo Pascal Unit
Turbo Pascal Help
Turbo Pascal Tour Data
Turbo Pascal Compressed Kepler Data
Turbo Pascal for DOS KOE Data
Turbo Pascal 7 Unit
Turbo Pascal Protected Mode Unit
Turbo Pascal Windows Unit

Other types of files may also use the .pa4 file extension. If you have helpful information about .pa4 extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Kids&Us Storybook Audio File
Perforce P4 Data
Python for Android Script
Print Artist Project
PowerArchiver Encrypted Archive
Parity Archive V2
PC Stitch Pattern

The .pa4 filename extension is often given incorrectly!

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

p4 (1), pat (1), pae (1), p4a (1), ap4 (1), par (1), pa (1)

Can't open a .pa4 file?

If you want to open a .pa4 file on your computer, you just need to have the appropriate program installed. If the .pa4 association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.pa4

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 from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android