SID File

What are SID files and how to open them

Are you having problems opening a SID file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a SID file?

SID files have multiple uses, and Commodore 64 SID Music is one of them. Read more about the others further down the page.

Commodore 64 SID Music

These SID files contain music composed for the Commodore 64 SID (Sound Interface Device) sound chip.

The music was used in games and demoscene productions on the Commodore 64, a home computer popular in the 1980s and 1990s.

There are players and emulators for the PC that can play back these sound files on modern hardware.

How to open SID files

We have identified one SID opener that is compatible with this specific type of SID file.

Programs that open Commodore 64 SID Music files


Last updated: November 11, 2022

All known file formats using extension .SID

While Commodore 64 SID Music is a popular type of SID-file, we know of 4 different uses of the .SID file extension. Different software may use files with the same extension for different types of data.

Steam Game Backup File

Files that contain the .sid file extension are most commonly associated with game data backup files that have been created by an application called Steam.

These files contain compressed game data that is used to back up games to, e.g., CD or DVD.

SID opener for Windows

We have identified one SID opener that is compatible with this specific type of SID file.


LizardTech MrSID Photo

The .sid file extension can also be used to save MrSID image files. These files are developed by Lizard Technologies for compressing large images.

The SID image files are created using multi-resolution seamless image database technology. These files are commonly used to store Large Geographic Information System (GIS) image files.

While we have not verified the apps ourselves yet, our users have suggested 10 different SID openers which you will find listed below.

More file formats using the SID extension

Through our research of SID files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • Sonnet Input Data

Various apps that use files with this extension

These apps are known to open certain types of SID files. Remember, different programs may use SID files for different purposes, so you may need to try out a few of them to be able to open your specific file.

IrfanViewIrfanViewUser submitted
PRIMERPRIMERUser submitted
EasySense SoftwareEasySense SoftwareUser submitted
DAEMON ToolsDAEMON ToolsUser submitted
TatukGIS ViewerTatukGIS ViewerUser submitted
Geo ExpressGeo ExpressUser submitted
Brava! Reader ApplicationBrava! Reader ApplicationUser submitted
GeoRect ApplicationGeoRect ApplicationUser submitted
LizardTech.GeoViewer.UILizardTech.GeoViewer.UIUser submitted

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