Home : File Types : SID File

.SID File Extension

File Type 1Steam Game Data Backup File

3.8 (48 Votes)
CategoryGame Files

What is a SID file?

Backup file created by Steam, an application used to download and manage Valve video games on desktop computers; contains compressed game data created by the Steam backup feature (steambackup.exe program); used to backup games to DVDs or other external media.

More Information

SID files are created with a .SIS file and a .SIM file, which provide metadata necessary to restore backup game data. SID files use the naming convention {game}_disk{X}_{Y}.sid, where "game" is the name of the backup game, "X" is the disk number, and "Y" is the backup file number on the disk.

NOTE: Steam backups do not include saved games, custom multiplayer maps, or configuration files. You must backup and restore those files manually.

Open over 300 file formats with File Viewer Plus.
Programs that open SID files
Valve Steam
Valve Steam
Updated 11/11/2011

File Type 2MrSID Image

3.4 (17 Votes)
CategoryRaster Image Files

.SID File Association 2

Image created using Multi-resolution Seamless Image Database (MrSID) compression, which was developed by Extensis for compressing large images; commonly used to partition and store large Geographic Information Systems (GIS) images.

More Information

NOTE: Extensis was formerly known as LizardTech.

Programs that open SID files
Updated 11/12/2018

File Type 3SID Audio File

3.0 (10 Votes)
CategoryAudio Files

.SID File Association 3

Audio file originally used by Commodore computer systems, but now more often used for playing the sounds on Commodore emulators and SID software players; often used for video game background music and can use mono or stereo audio formats; created for the MOS Technology 6502 processor, which can be emulated by newer desktop software to play the audio.

More Information

SID files may use the PSID format or the newer RSID (Real SID) format. While the PSID format is more compatible with general Commodore emulation software, the RSID format requires more complete emulation of the C64 hardware.

Programs that open SID files
Updated 5/5/2017

File Type 4ScanIt Document

2.0 (2 Votes)
CategoryRaster Image Files

.SID File Association 4

Document created and used by ScanIt, an application used to extract data from graphs; contains the graph image and its metadata; includes axes definitions, document windows, and other document specific options.

More Information

The SID file allows you to save your progress and continue it at a later time. The file can be saved to a variety of image formats, such as .JPEG, .PNG, .TIF, and .BMP.

Programs that open SID files
Updated 9/29/2015

About SID Files

Our goal is to help you understand what a file with a *.sid suffix is and how to open it.

All file types, file format descriptions, and software programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

If you would like to suggest any additions or updates to this page, please let us know.