LanguagePAC
Atari STAD image format
File type: Graphics file
Files with pac extension can be found as old Atari ST graphic images in STAD format.
Found 9 different file type records with the same pac filename suffix.
What is pac file?
File type category:
Graphics file
Date updated: June 23, 2025
File extension pac was used for a special Atari ST graphic format called STAD.
This format contains a header followed by a single block of RLE-compressed image data. The header is seven bytes in size and contains only information necessary to decompress the image data.
The Atari STAD pictures are viewable in XnView photo editor and manager.
How to open pac file?
Use XnView to open *.pac Atari STAD images.
How to convert pac file?
Use XnView to transform *.pac files to other picture formats.
Suggested software to open pac file:
Associated software actions with the pac file
Programs for viewing pac files:
XnView MP (Multiplatform)
Software apps that print pac files:
XnView MP (Multiplatform)
CrossePAC archive
File type category:
Archive and compressed file
Date updated: November 28, 2022
File extension pac is also used in CrossePAC software for it's default archiver format.
The pac archives created by CrossePAC are specifically designed for portability across a wide range of hardware and software platforms.
CrossePAC supports making archives in any of three formats: Text, ASCII, or Binary.
How to open pac file?
Use CrossePAC to extract data from *.pac archive files.
How to convert pac file?
Perhaps can be converted to other alternative archive formats using CrossePAC.
Suggested software to open pac file:
Associated software actions with the pac file
Software applications that can open pac files:
CrossePAC (Microsoft Windows)
Software apps that create pac files:
CrossePAC (Microsoft Windows)
Software apps that extract pac files:
CrossePAC (Microsoft Windows)
Software applications that handle other tasks involving pac files:
CrossePAC (Microsoft Windows)
Desperados game archive
File type category:
Archive and compressed file
Game file
Date updated: July 11, 2024
The pac file extension is also related to Desperados, a real-time tactics computer game for Microsoft Windows operating system.
This type of .pac file stores game archive including sounds, music, models, maps, graphics etc.
How to open pac file?
Use Dragon UnPACKer to open *.pac Desperados game archive.
How to convert pac file?
Game archives are rarely converted, but sometimes can be extracted with modding tools.
Suggested software to open pac file:
Associated software actions with the pac file
Software applications that can open pac files:
Dragon UnPACKer (Microsoft Windows)
Software apps that extract pac files:
Dragon UnPACKer (Microsoft Windows)
Software applications that handle other tasks involving pac files:
Desperados: Wanted Dead or Alive (Microsoft Windows)
Kodak Photo-CD multi-resolution image
File type category:
Bitmap image file
Date updated: May 9, 2019
The pac file extension is used for a multi-resolution image format developed by Kodak as part of the Photo CD System.
The PAC format was developed by Kodak before JPEG format became official standard. It typically achieves lesser compression rates but has better quality of images.
The pac file can probably be opened in professional photo editing tools, or in Photo-CD program bundled to older Kodak digital cameras.
How to open pac file?
Use compatible tools to work with *.pac files.
How to convert pac file?
Probably can be exported to other formats.
LPAC lossless compressed audio
File type category:
Audio and sound file
Date updated: February 22, 2019
The pac file extension is associated with the LPAC compressed audio file format. LPAC is a codec (coder / decoder) for lossless compression of digital audio files.
The pac file stores audio compressed with LPAC codec.
Mime types:
audio/x-pac
How to open pac file?
Use Winamp to playback LPAC lossless compressed audio files.
How to convert pac file?
Probably can be exported to other formats.
Suggested software to open pac file:
Associated software actions with the pac file
Apps designed for playing pac files:
Winamp with LPAC plugin (Microsoft Windows)
Pacman data
File type category:
Game file
Date updated: December 3, 2018
The pac file extension was also supposedly used by computer game from Namco called Pac-man, originally developed for arcades and Atari 2600 gaming console, latter ported for many other systems.
How to open pac file?
You cannot open this type of *.pac files directly.
How to convert pac file?
This file type is not meant to be converted to anything else and it would be pointless to try to do so.
Suggested software to open pac file:
Associated software actions with the pac file
Software applications that handle other tasks involving pac files:
Pac-man (Microsoft MS-DOS)
Polistream video subtitle data
File type category:
Text file
Date updated: May 3, 2019
The pac file extension is also associated with Screen Subtitling Systems applications for DVD subtitling, Teletext subtitling etc., developed by Polistream.
The pac file contains subtitles stored in a Polistream native subtitle format.
How to open pac file?
Use Subtitle Editor to open *.pac Polistream video subtitle data files.
How to convert pac file?
Several subtitle programs support this format and may help you with conversion of the subtitles to another format.
Suggested software to open pac file:
Associated software actions with the pac file
Software applications that can open pac files:
Subtitle Edit (Microsoft Windows)
Swift Create (Microsoft Windows)
Software applications that can edit pac files:
Subtitle Edit (Microsoft Windows)
Swift Create (Microsoft Windows)
Software capable of saving pac files:
Subtitle Edit (Microsoft Windows)
Swift Create (Microsoft Windows)
Programs for viewing pac files:
Poliscript 3000 (Microsoft Windows)
Software apps that convert pac files:
Subtitle Edit (Microsoft Windows)
Software apps that import pac files:
WinCAPS (Microsoft Windows)
Software apps that export pac files:
WinCAPS (Microsoft Windows)
Proxy automatic configuration
File type category:
Internet related file
Settings, options, themes or skins file
Date updated: June 27, 2025
The pac file extension is associated with the Proxy automatic configuration file.
A proxy auto-config (PAC) file defines how web browsers and other user agents can automatically choose the appropriate proxy server (access method) for fetching a given URL.
The pac file contains a JavaScript function FindProxyForURL(url, host). This function returns a string with one or more access method specifications. These specifications cause the user agent to use a particular proxy server or to connect directly.
MIME types:
application/x-ns-proxy-autoconfig
Suggested software to open pac file:
Associated software actions with the pac file
Software apps that manage settings for pac files:
Microsoft Edge (Microsoft Windows)
Firefox (Microsoft Windows)
Opera browser (Microsoft Windows)
Google Chrome (Microsoft Windows)
Safari for Microsoft Windows (Microsoft Windows)
Safari (Apple macOS / Mac OS X)
Firefox for Mac (Apple macOS / Mac OS X)
Opera browser for Mac (Apple macOS / Mac OS X)
Google Chrome for Mac (Apple macOS / Mac OS X)
Firefox for Linux (Linux/Unix)
Opera browser for Linux (Linux/Unix)
Google Chrome for Linux (Linux/Unix)
SB Studio II package
File type category:
Audio and sound file
Date updated: November 10, 2024
The pac file extension is also associated with the now discontinued SB Studio II audio software. and used for its default audio format.
The pac file stores audio data in 8 or 16-bits mono sound format, also contains loops, names, collections etc.
How to open pac file?
Use Awave Studio to playback .pac SB Studio II package files.
How to convert pac file?
Although this file type is a little outdated, it should still be possible to convert it to some other audio file.
Suggested software to open pac file:
Associated software actions with the pac file
Apps designed for playing pac files:
Awave Studio (Microsoft Windows)