Opening an LGK File

The LGK file type is primarily associated with Vendor Logger.

LGK	File extension: LGK
	File type:	data file

What is an LGK file?

LGK files mostly belong to Vendor Logger. An LGK file is a data log file used by machinery systems to capture and store operational details.
It often comes in two main forms:

Crane Working Data – This version records sensor readings and work cycle details from cranes. It is used to track performance and support diagnostics.

Carrier Transicold Data Logger – This variant collects data from systems related to rail surveys and equipment performance.

FilExt.com tips: These logs are produced by proprietary systems from companies such as REZLGK and CRS(T)1-CRR. To open and view an LGK file, you should use the vendor-supplied viewer or conversion tool, like those provided for the Liebherr Crane Data Logger. This tool helps interpret the logged data for maintenance and analysis.

How to open LGK files

You need a suitable software like Vendor Logger to open an LGK 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 LGK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a LGK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online LGK Text Viewer

Choose your .lgk file to analyze

or drag and drop it here

Online File Viewer

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LGK file format:

A file format defines how the data in the file is structured. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). However, different programs can use the same file extension, and file extensions can be assigned incorrectly. So you need a detailed analysis of a file to find out the format and the associated program. In the following you will find our evaluation of the LGK files:

The LGK file extension is not found very often and is used by a few programs, each with its own file format. But the following two file formats are common:

• 40% of all LGK files use the same file format, which have the signature REZLGK. These are binary files, so they do not contain words or text. The files are on average 5 MB in size and range from 2 MB to 11 MB. The file type was created 20 years ago but is still used today. The following keywords are characteristic: REZLGK, format$, basic_infor and max_val.
• 9% of all LGK files start with the bytes 80 00 00 00 crucial for this file format. These files are binary files, so they do not contain text, but only cryptic characters. The files are on average 280 KB in size and range from 140 bytes to 660 KB. The following keywords are characteristic: CRS(T)1-CRR. LOG00001.LGK is a typical file name.

All other LGK files (51%) have no uniform format, the following 4 formats exist: Title. Tagged as lagekarte. You can get all the details of your LGK file by dragging it onto this page or by clicking the button "Choose your .lgk file to analyze" above.