If you are seeking information about file extensions, then you are in the right place at the right time.

Details of extension .slef

On this page, we're going to take a closer look at the .slef file extension, which is related to Spectral Library Exchange Format Data.

We'll explain what exactly a .slef file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .slef files into different formats, we'll give you some tips on how to do that too.

Let's see the file format associated with this file extension!


  1. Spectral Library Exchange Format Data

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Spectral Library Exchange Format Data

slef file - Spectral Library Exchange Format Data
The SLEF file belongs to the Data category and works with ENVI, being used as a Spectral Library Exchange Format Data. The SLEF is a format that was developed by a number of intelligence agencies that were dealing with spectral signature data and wanted a common way to store not just signature data, but also metadata (classification, who collected it, details about material, where it was collected, when it was collected, etc.). The developer is still actively supporting the ENVI, likely. Our data shows that ENVI uses 30 more file types.
Application: ENVI
Program name: -
Category: Data files
Mime-type: application/octet-stream
Related extensions:
.lev ENVI Contour Levels Data
.cff ENVI Calibration Factors Data
.dim TripleSat DIMAP Data
.cnt ENVI PPI Count Data

The .slef file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .slef extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .slef file extension wrong?

In our database, we came across the following similar extensions:

.self Coreboot Simple Executable Loader Format Data
.lef LEN Exchange Format File
.sle SurfPlan Kite Project
.slf Bitdefender SLF Data
.spef Standard Parasitic Exchange Format
.sef Encryptafile Signature

The .slef extension is frequently misused

People sometimes confuse the .slef filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

self (1), lef (1), sle (1), slf (1), spef (1), sef (1)

Having trouble opening a .slef file?

If you want to open a .slef file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .slef association can trigger this error.

Windows can't open this file:

File: example.slef

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program with which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android