What is a SNA file?
A .SNA file is a data storage file. It has multiple different uses. The most common use is a Drive Snapshot Primary Backup File. The developer Tom Ehlert creates this format for the Drive Snapshot software. It stores a complete image of a computer hard drive.
Other software also uses the .SNA extension. It can be an emulator snapshot save file for NO$GBA or Sinclair ZX Spectrum emulators. It can also be a compressed diagnostic data archive for Snap-on ShopStream software, which uses a standard ZIP container.
How to open SNA files?
To open a Drive Snapshot Primary Backup File, you usually need the original backup software. You can mount the disk image in Windows to view the internal files. For emulator game files, you must load the file inside the specific emulator that created it.
Because .SNA has multiple possible meanings, we recommend viewer.online/sna to identify the actual format of your file. viewer.online/sna analyzes .SNA files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Best practices and troubleshooting
Backup .SNA files are often very large. Do not interrupt the transfer process when you move these files to an external drive. If your file is a diagnostic archive, you can rename the file extension to .ZIP and extract it with standard archive tools. If you need to change the file format, we recommend convert.guru to safely convert your files. For example, you can convert ZX Spectrum memory snapshots to .Z80 formats, or diagnostic archives to standard .ZIP files.
Software and tools
You can manage these files with specific desktop software. Common tools include Drive Snapshot, Acronis True Image, WinZip, and the NO$GBA emulator.
Summary
viewer.online/sna directly opens and previews .SNA files in the browser, eliminating the need to install software or troubleshoot compatibility issues.