Opening LGS Files

The LGS file type is primarily associated with Leica Cyclone.

LGS	File extension: LGS
	File type:	3D scan data file

What is an LGS file?

LGS files mostly belong to Leica Cyclone. LGS files are primarily 3D scan data files created by Leica Cyclone software from Leica Geosystems. These files store raw data captured from laser scanners, which often include 3D point clouds and spatial coordinates of structures or objects.
Key details about LGS files include:

Primary Use: They serve as data containers for 3D scans in surveying and mapping tasks.

Alternative Use: Some LGS files are 3D model files associated with Longer3D. More details can be found on their website at Longer3D.

Other Use: A small number operate as files for the Little Game System, indicating a use in game data storage.

FilExt.com tip: To open and view these files effectively, use the dedicated software provided by the file’s source, such as Leica Cyclone for scan data. This ensures that the complex 3D information is correctly interpreted and rendered.

How to open LGS files

You need a suitable software like Leica Cyclone to open an LGS file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your LGS file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a LGS file directly in the browser:. Just drag the file onto this browser window and drop it.

Online LGS Text Viewer

Choose your .lgs file to analyze

or drag and drop it here

Online File Viewer

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LGS file extension format:

A file format defines how the data in the file is structured. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. Knowledge is power - this also applies when dealing with unknown or faulty files. In the following you will find our evaluation of the LGS files:

The LGS file type predominantly uses a uniform format. The two most popular formats are as follows:

• 70% of all LGS files have the same signature wild::geosystems. The contents of these files cannot be read by a human; only a computer program can interpret the data. The files are 890 MB to 36 GB in size, with a median of 5 GB. The file type was created recently. Certain words are almost always found in the files, such as wild::geosystems and PointCloud. Files like these are about scan, floor, house, building, sample, area and data, and often include person-related information.
• 10% of all LGS files use the same file format, which have the signature Longer3D. These are binary files, so they do not contain words or text. The files are on average 2 MB in size and range from 340 KB to 6 MB. The keywords Longer3D are typical for these files. Such LGS files store data about head, and have often person-related content.

All other LGS files (20%) have no uniform format. Often described as logs. Just click the "Choose your .lgs file to analyze" button on this page to find out what your LGS file is.