SAV File

What are SAV files and how to open them

Are you having problems opening a SAV file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your SAV files.

What is a SAV file?

SAV files have multiple uses, and Daemon Tools Pro Disk Image is one of them. Read more about the other uses further down the page.

Daemon Tools Pro Disk Image

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open SAV files

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

Programs that open Daemon Tools Pro Disk Image files

Last updated: August 13, 2026

All known file formats using extension .SAV

While Daemon Tools Pro Disk Image is a popular type of SAV-file, we know of 20 different uses of the .SAV file extension. Different software may use files with the same extension for different types of data.

Free Download Manager Data

Free Download Manager Data files with the .SAV extension store internal data used by the Free Download Manager (FDM) application to keep track of both past and present download operations. These files, such as Downloads.sav, History.sav, Downloads.his.sav, dlmgrsi.sav, hold information like download URLs, file names, destination paths, timestamps for when downloads started and ended, user credentials needed for downloads, proxy or protocol settings, and group or category names within FDM. They help FDM resume downloads, maintain history, and support the user's organization of downloads.

FDM writes these .SAV files automatically. For in-progress, stopped, scheduled, or completed downloads, it updates the relevant .SAV file with all the above metadata. When entries are deleted in FDM's interface (for example from history or groups), the corresponding data is removed from the .SAV file upon exiting the application. Some .SAV files keep only completed downloads by default; others log every state.

These files can be identified by a signature: they begin with the ASCII header "FDMDownloads" stored at byte offset zero.

SAV opener for Windows

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

Avatar Studio Save

We know that one SAV format is Avatar Studio Save. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

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

Denise Amiga Saved State

We know that one SAV format is Denise Amiga Saved State. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Denise C64 Saved State

We know that one SAV format is Denise C64 Saved State. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

DOSBox-X Save State

We know that one SAV format is DOSBox-X Save State. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

GTKWave Saved Session

We know that one SAV format is GTKWave Saved Session. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Half-Life Saved Game

We know that one SAV format is Half-Life Saved Game. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Interactive Data Language (IDL) Binary Save File

We know that one SAV format is Interactive Data Language (IDL) Binary Save File. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Music Box Music

We know that one SAV format is Music Box Music. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

No$GBA Nintendo Gameboy Advance Emulator Saved Session

The No$GBA Nintendo Gameboy Advance Emulator Saved Session format is a binary file used by the No$GBA emulator to store game saves ("battery saves" or "in-game saves") for Game Boy Advance (and similarly some Nintendo DS) games. It preserves the game's progress when saved at a point in the game, so that the same state can be resumed later under that emulator.

No$GBA writes these .SAV files automatically when a save event occurs in a supported game. The file typically sits in the emulator's "BATTERY" folder. Users may also export or import this battery save file into other tools or emulators, though compatibility depends on whether No$GBA stored the data raw or compressed. Other emulators (such as DeSmuME) can import or use these save files when they match expected format or size. Changing No$GBA's configuration (in NO$GBA.INI) between "Compressed" and "Raw" save formats affects how readable or portable the resulting .SAV is with these other tools.

Technical signature: at byte offset 0 the file begins with the ASCII string "NocashGbaBackupMediaSavDataFile" (31 bytes) followed by a byte 0x1A. That header is followed by fields including date/time of last save (day, month, year, hour, minute), a tag "SRAM", a field for compression method (0 for uncompressed, 1 for compressed), then size(s) for packed or unpacked regions and further data blocks. The data section may use a simple run-length-type encoding when compressed.

Programs that open these SAV files

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

NTRQ Module

Music Module composed using the NES NTRQ Music "Tracker".

OPTune Saved Recovery Info

We know that one SAV format is OPTune Saved Recovery Info. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

PASW Statistics Data

We know that one SAV format is PASW Statistics Data. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

SPSS For Windows Data

SPSS For Windows Data files use the .sav extension to store full statistical datasets produced by IBM SPSS Statistics (formerly SPSS Inc.). The file holds both the actual data - arranged as cases (rows) and variables (columns) - and a metadata dictionary that defines each variable's name, type (numeric or character), display format, optional labels, and any missing-value codes. This format is used when you save data in SPSS using commands like SAVE or via the Data Editor.

The metadata dictionary may include extended information such as variable labels (long textual descriptions of what each variable means), value labels (mapping from code values to human-readable categories), and optional documentation or other attributes embedded in the file. When opening a .sav file, SPSS reads these definitions first, so analyses and displays can correctly interpret and format each variable.

Internally, .sav files are binary and structured in three main sections: a header, a dictionary of variable descriptor records and optional label/extension/document records, followed by the data observations. The header begins with a signature string indicating the file format version and character encoding, followed by a fixed-length identification string showing SPSS version and operating system information.

The file signature at byte offset 0 consists of the ASCII sequence $FL2@(#) SPSS DATA FILE which identifies this exact SPSS .sav format.

Programs that open these SAV files

We have identified 2 SAV openers that are compatible with this specific type of SAV file.

Star Wars: Jedi Knight Save Game

We know that one SAV format is Star Wars: Jedi Knight Save Game. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Wataroo Save State

We know that one SAV format is Wataroo Save State. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Windows NT Registry Hive

We know that one SAV format is Windows NT Registry Hive. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Wolfenstein Save Game

We know that one SAV format is Wolfenstein Save Game. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

ZBoy Saved State

We know that one SAV format is ZBoy Saved State. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Various apps that use files with this extension

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

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about SAV file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.