How to open a .SFS file online
No extra software to download or install.
Pick your .SFS file
Drag it in or click to choose it. We read its contents list first, so it opens right away without unpacking everything.
Browse what's inside
See every file with its size, how much it's compressed and its date, and search by name across all the folders.
Preview or download
Click a file to preview text or images, or save just that one. Need everything? Download it all as a single ZIP.
About .SFS files
What a .SFS file is, and what's inside it.
An SFS file is a Squashfs compressed filesystem image used in Linux Live distributions, Android system partitions, and embedded device firmware. On Linux, mount it with sudo mount -t squashfs file.sfs /mnt -o loop, or extract with unsquashfs. On Windows, open it with 7-Zip 21.03 or later.
Programs that open .SFS files
| Full name | Squashfs Compressed Filesystem Image |
|---|---|
| Developer | Phillip Lougher (original); maintained as part of Linux kernel since 2009 |
| First released | 2002 (Squashfs 1.0 by Phillip Lougher) |
| Category | Archives |
| MIME type | application/octet-stream |
| Signature | 68 73 71 73 "hsqs" - little-endian host signature |
Related viewers
Found something inside the archive? Open it here.
Do I have to unpack the whole .SFS file?
No. The viewer reads its table of contents first and only unpacks a file when you click it. That works even with multi-gigabyte archives, because we read just the bytes we need.
Can I open password-protected archives?
Yes, for ZIP (ZipCrypto and AES) and 7Z. You'll be asked for the password,. We can't recover forgotten passwords.
Is my .SFS file uploaded anywhere?
No. The code that unpacks the file is downloaded once and then reused.
Why does a .docx or .apk open as an archive?
Because they are ZIP archives under the hood. Office documents, Android apps, Java programs and EPUB books all use ZIP as their container.
What about split archives (.001, .z01, .part1.rar)?
Multi-part archives need all their parts. Today you can open the first part to see the file list; joining parts is on our roadmap.
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