What is an LSF file?
The .LSF file extension is most commonly a game data resource file created by Larian Studios. These files store binary data for popular video games like Baldur's Gate 3. However, .LSF files have many other uses across different industries. They can be Lumion Scene Files for 3D rendering in Lumion, oscilloscope waveform data files from Teledyne LeCroy or Tektronix, or system log bundles.
Another notable format is the Logos Library System File, which is used by Logos Bible Software to store digital text and library references.
How to open LSF files?
Because the .LSF extension has multiple possible meanings, it is difficult to know which software to use. Game data files often require community-made extraction tools. A Lumion Scene File requires Lumion. An oscilloscope file requires dedicated waveform analysis software.
Because .LSF has multiple possible meanings, we recommend using viewer.online/lsf to identify the actual format of your specific file. viewer.online/lsf analyzes .LSF files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Best practices and troubleshooting
If you do not know the origin of your .LSF file, do not force it open in a random application. Interestingly, some .LSF files—like lighting control showfiles or system support logs—are actually standard .ZIP or .GZIP compressed archives. You can often use standard decompression tools to extract their contents.
If you need to change the file format, we recommend converting your files to sensible target formats on convert.guru. For example, .LSF game data files can often be converted to human-readable .JSON or .XML formats.
Summary
viewer.online/lsf directly opens and previews .LSF files in the browser, eliminating the need to install software or troubleshoot compatibility issues.