The file extension .pac is used by a number of different programs and systems including the following: Atari (Inforgrames) Stad, Digital Strategies CrossePac, Lossless Parallel Adaptive Compression (LPAC), Netscape Browser, Screen Subtitling Systems, Sound Blaster Studio II and Spellbound Desperados: Wanted Dead/Alive game. Many of these .pac file extensions stand for "package".
Atari uses the .pac file extension as a Stad bitmap graphic image format. This is a black-and-white image format, using a high-resolution of 640x400 pixels. The header is seven bytes using Run Length Encoding (RLE) compression.
Mac OS systems that open and run the file extension .pac include the Lemkesoft GraphicConverter and XnView.
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Microsoft Windows systems that open and run the .pac file extension include the XnView.
This XnView software is a graphics image viewing and conversion program with numerous functions including filter application (average, blur and emboss) and slide show support. The Microsoft Windows version supports 44 languages. It also works with other common graphic formats like .gif and .tif.
The Digital Strategies company uses the .pac file extension, calling it a CrossePac compressed archive file. Digital Strategies sells technology solutions (applications) for businesses, in order to improve their computers, data storage and order tracking.
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More Info Regarding File Extension Pac
The LPAC system was developed by Tilman Liebchen in order to create a codec (coder/decoder) for "lossless" compressed audio. The term, "lossless" refers to the audio file retaining all of its original quality before and after compresson/decompression. This "lossless" format can achieve compression ranges from 1.5 to 4, depending on the type of music compressed. It differs from "lossy" compression/decompression formats like MP3 and RealAudio which have higher compression ratios than "lossless" but lose quality during the compression/decompression procedure.
LPAC's ExactAudioCopy freeware application works with the file extension .pac on many different platforms including Microsoft Windows, Linux and Solaris. The Winamp media player plug-in can also play the file extension .pac. The LPAC archiver works with Windows systems. The MIME type is "audi/x-pac".
Netscape also uses the .pac file extension for its Browser, calling it a Proxy Auto-Config file. Mozilla Firefox and Opera are related to Netscape and use this "proxy.pac" file to read location information (URL, host name and domain).
Sophos Web Appliance software deals with downloading, file management and virus disinfection. It can manage the .pac file extension.
The MIME type is "application/x-ns-proxy-autoconfig".
Screen Subtitling Systems has a Win 2020 Polistream video data format labelled .pac file extension. This company is involved in subtitling, captioning, monitoring and broadcasting for videos, films and movies.
Sound Blaster Studio II uses a .pac file extension in its SB Studio song + sound package. This tracker-style music program has 20 audio formats channels, 256 sheets and 255 samples. Its song format, .pac file extension, stands for "package" which stores sound, audio and music data in block format. It also includes a CD player for your favorite music selections. It has Musical Instrument Digital Interface (MIDI) support, which allows for electronic musical instruments to synchronize with one another.
This SB Studio can be purchased or used as shareware and runs on Microsoft Windows. It plays the file extension .pac and related file extensions like .iff, .mod, .raw, .sou and .wav.
FMJ-Software Awave Studio also opens and runs the file extension .pac.
The Spellbound Desperados: Wanted Dead Alive game uses the .pac file extension as a game archive. This game is a Wild West action game with tactics and strategy. It uses an innovative function called "Quick Actions", where the player can plan moves in advance. This game was distributed by Atari (Inforgrames). It was a very popular seller.
In order for Microsoft Internet Information Services (IIS) to read this file extension .pac, the MIME type must be listed in the maps. In order to do this, select the HTTP header tab to add the .pac file extension MIME type.
Problems can occur due to confusion between the .pac file extension and other "packages" which don't use the .pac file extension.
