SFS Converter

Extract text from SFS files

Select File
Drop or upload your .SFS file

Online File Converter

✈

How to extract text from your SFS file

Click the "Select File" button above, and choose your SFS file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.

Convert SFS to another file type

To convert your SFS file to another format, you need 7-Zip or other Compressed software.

Convert a file to SFS

To convert other file formats to the "Linux Archive & Game Save" file type, you need software like 7-Zip or a similar tool.

About SFS files

The .sfs extension primarily refers to the SquashFS (Squash File System), a highly compressed, read-only file system for Linux. It is widely used in embedded systems (like routers), Live CD distributions (such as Puppy Linux), and Android system images to store large amounts of data efficiently. However, because it is a read-only Linux format, Windows and macOS users often struggle to open or extract these files without specialized command-line tools like unsquashfs or 7-Zip.

In a gaming context, .sfs is the standard save file format for Starfield (Steam version) and Kerbal Space Program. Starfield .sfs files are actually compressed binary archives containing the game state; users frequently need to convert these to JSON or Text to modify inventory, stats, or fix bugs. Similarly, KSP uses persistent.sfs, which is a plain text structure but can be unwieldy to edit manually without syntax highlighting.

Best Target Formats:

For Linux/System Use: Convert/Extract to a Folder or ISO to modify contents, then repack using mksquashfs.
For Starfield Modding: Convert to JSON using tools like StarfieldSaveTool to make the binary data human-readable and editable.
For Archiving: Keep as .SFS (it is already highly compressed) or wrap in ZIP for better Windows compatibility.

Convert.Guru analyzes your SFS file, detects the exact format, and lets you read the text inside.

Users also converted MP3, ZIP, RAR and XZ files.

FAQ

If you want to convert SFS file to MP3, WAV, AAC, FLAC, OGG, WMA, M4A, AIFF, OPUS, ALAC, APE or WV, you can use 7-Zip or similar software from the "Compressed Read-Only Filesystem" category. In the File menu, look for Save As… or Export….

To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to SFS, try 7-Zip or another comparable tool in the "Compressed Read-Only Filesystem" category.

The SFS Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our SFS converter.