.SID File Extension

SID files exist as 4 different types. Please find information about each of them below.

Type 1: Steam Game Data Backup File

SID files store backup game data for Steam. Steam lets you download and manage Valve video games. The backup files use the naming format {game}_disk{X}_{Y}.sid. {Game} is the backup game name. {X} is ...

General Information

Title SID File Extension
Extension .sid
Full Form Steam Game Data Backup File
File Type Game Data File
Developer Valve Corporation
MIME Type application/octet-stream

File Function

Primary Function Store game data
Additional Functions Facilitate game restoration
Features Compressed, Archive

File Characteristics

Quality High (compressed)
Supports Layers N/A
Supports Transparency N/A
Editable No

Use Cases

Game Backup Yes
Game Restoration Yes
Data Transfer Yes

Security and Practices

Security Risks Tampering risk
Best Practices Verify files, Backup integrity

Historical/Version Information

Initial Release 2003
Latest Version N/A

Associated Types

Similar Extensions .gcf, .ncf, .acf, .vdf

Software Compatibility

Software Usage Policy OS Compatibility
Steam Free client Windows, Mac, Linux

Type 2: MrSID Image

MrSID is an image compression format developed by LizardTech. It stands for Multi-Resolution Seamless Image Database. SID files are commonly used in geographic information systems and satellite imager...

General Information

Title MrSID Image File Extension
Extension .sid
Full Form Multiresolution Seamless Image Database
File Type Raster Image File
Developer LizardTech
MIME Type image/x-mrsid-image

File Function

Primary Function Geospatial imagery storage
Additional Functions Compression, Viewing
Features Multi-resolution, Scalable, Lossless/lossy compression

File Characteristics

Quality High resolution
Supports Layers Yes
Supports Transparency No
Editable With software

Use Cases

GIS Yes
Mapping Yes
Aerial photography Yes
Satellite imagery Yes

Security and Practices

Security Risks Low
Best Practices Regular updates, Authorized access

Historical/Version Information

Initial Release Early 1990s
Latest Version Varies by software

Associated Types

Similar Extensions .mrsid, .jp2, .ecw, .tiff

Software Compatibility

Software Usage Policy OS Compatibility
LizardTech GeoViewer Free, Paid versions Windows, Mac
GDAL Free Cross-platform
ArcGIS Paid Windows

Type 3: SID Audio

The .sid file extension can be used to save MrSID image files. These files compress large images. They are used to store Large Geographic Information System (GIS) image files. We have not verified t...

General Information

Title SID File Extension
Extension .sid
Full Form Commodore 64 Music File
File Type Audio File
Developer Commodore International
MIME Type audio/prs.sid

File Function

Primary Function Store music
Additional Functions Emulate C64 sound
Features Chiptune, Retro gaming

File Characteristics

Quality Low fidelity
Supports Layers N/A
Supports Transparency N/A
Editable Yes, with tools

Use Cases

Chiptune Music Creation Yes
Retro Gaming Yes
Music Emulation Yes

Security and Practices

Security Risks Low risk
Best Practices Regular updates, Safe sources

Historical/Version Information

Initial Release 1982
Latest Version Depends on player

Associated Types

Similar Extensions .mus, .sng, .mod

Software Compatibility

Software Usage Policy OS Compatibility
Sidplay2 Free Windows, Mac, Linux
VICE Free Windows, Mac, Linux
JSidPlay2 Free Windows, Mac, Linux, Java

Type 4: ScanIt Document

General Information

Title .SID File Extension
Extension .sid
Full Form ScanIt Document
File Type Raster Image File
Developer LizardTech
MIME Type image/x-mrsid-image

File Function

Primary Function Store scanned images
Additional Functions Multi-resolution, Seamless viewing
Features Compression, Scalability

File Characteristics

Quality High-resolution
Supports Layers Yes
Supports Transparency No
Editable Limited

Use Cases

Geospatial Imaging Yes
Aerial Photography Yes
GIS Applications Yes

Security and Practices

Security Risks Low
Best Practices Regular updates, Access control

Historical/Version Information

Initial Release 1990s
Latest Version Varies by software

Associated Types

Similar Extensions .jpeg, .png, .tiff

Software Compatibility

Software Usage Policy OS Compatibility
LizardTech GeoViewer Free, Paid version Windows, Mac
GDAL Free Cross-platform
ERDAS IMAGINE Paid Windows