Opening an RLS File

The RLS file type is primarily associated with Spectroscopy Software.

RLSFile Extension RLS
File extension: RLS
File type:  spectroscopy file

What is an RLS file?

RLS files mostly belong to Spectroscopy Software. RLS files store scientific spectral measurement data. They are most often used for capturing reflectance information, which is a key output for Raman spectroscopy experiments.
Other uses include:
  • UV Spectra: Certain instruments, like those from PerkinElmer, record ultraviolet spectrum data in RLS files. More details at PerkinElmer.
  • Absorption Spectra: Instruments such as SpectraMax Pro use the RLS format for absorption or spectral data. Further information is available at Molecular Devices.
  • FilExt.com tip: These files are typically handled with proprietary instrument software and are essential in lab environments for reliable spectral analysis.

    How do you open RLS files?

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

    Online RLS Text Viewer

    Choose your .rls file to analyze

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    Programs that open and convert RLS files:

    1. Spectroscopy Software
      See the previous paragraphs to learn more about the main application. RLS files are often referred to as Spectroscopy Software data files because this type of file is primarily created or used by this software.
    2. RadLight (Skin) by RadLight
      RadLight is an application developed to offer you playback of DivX and other multimedia content.

    RLS format details:

    To find out what program is needed to open RLS files, you need to determine the file format. The file format can be deduced from the file extension and the signature. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Our analysis of the RLS files produces the following result:

    RLS is rarely used as a file extension and has no uniform or dominant file format. The two most popular formats are as follows:

    All the rest of the RLS files (65%) have different formats, the following 3 formats exist: Spectrum. Tagged as edition. Drag & drop your file here to see the file format and a preview of your RLS file!

    Technical Data for RLS File Extension

    File classification:
    Data
    Related files:

    The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

    ProgramID: URL List
    EXEFile: %ProgramFiles%\GetRight\GetRight.exe %1

    ProgramID: PRE.Rules
    EXEFile: %ProgramFiles%\PRMT6\XMLTUN~1\Pre.exe

    ProgramID: PRE.Rules
    EXEFile: %ProgramFiles%\PRMT7\XMLTUN~1\Pre.exe


    an rls spectroscopy file is a special file format and should only be edited and saved with the appropriate software.

    How to solve problems with RLS files

    • Associate the RLS file extension with the correct application.
    • Update your software that should actually open spectroscopy files. Because only the current version supports the latest RLS file format. Search, therefore, e.g. on the manufacturer website after an available Spectroscopy Software update.
    • To make sure that your RLS file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
    • Click here to open your .RLS file online - secure, fast, and no downloads needed.
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    RLS file viewer RLS file description