CLS file format description

CLS file format

We made this page to help you understand how to work with CLS files. Here, you can find info on software that can handle these files. It includes simple programs for opening and converting them.

Learn about the CLS file and its functions here!

We also explain how to convert them into other types. It's simple and hassle-free. For opening or changing CLS files, this page offers all the tools you need.

#1 CLASS Group Abbreviation

The CLS isn't a filename extension, it is the abbreviated name of release group. (CLASS)

Category:Abbreviation files
Magic:- / -

CLASS Group Abbreviation related extensions

  • flt FAiRLiGHT Group Abbreviation
  • dgr Dagger Group Abbreviation
  • dev DEViANCE Group Abbreviation
  • ep2 Nvidia EPP2.0 Profile

#2 Visual Basic Class Module

The CLS file is categorized under Development. It is associated with Visual Basic, serving as a Visual Basic Class Module. Dynamic data structures generally consist of at least some simple data storage (in our case, it will be a class module), along with a linkage to the next element in the structure. Visit the website of Visual Basic for a detailed description of the CLS format.

Application:Visual Basic
Category:Development files
Magic:- / -

Visual Basic Class Module related extensions

  • img Psion OPL Image
  • pgh PostgreSQL ECPG C Header File
  • pkh Oracle Package Header
  • reb REBOL Source Code

#3 LaTeX Document Class Data

The CLS file is categorized under Data. It is associated with teTeX, serving as a LaTeX Document Class Data. LaTeX is a high-quality typesetting system, with features designed for the production of technical and scientific documentation. LaTeX is the de facto standard for the communication and publication of scientific documents. Visit the website of teTeX for a detailed description of the CLS format.

Category:Data files
Magic:- / -

LaTeX Document Class Data related extensions

  • aux LaTeX Auxiliary Data
  • bbl BibTeX Bibliographic Reference
  • bib BibTeX Document
  • bst BibTeX Document Style

#4 ArcInfo Geocoding Classification Data

The CLS file is categorized under GIS. It is associated with ESRI ArcInfo, serving as an ArcInfo Geocoding Classification Data. ArcInfo is a complete and extensible geographic information system. Visit the website of ESRI ArcInfo for a detailed description of the CLS format.

Application:ESRI ArcInfo
Category:GIS files
Magic:- / -

ArcInfo Geocoding Classification Data related extensions

  • pkinfo ArcGIS Package Information Data
  • gsi GPS Tuner Map Slices Calibration Data
  • aet Chart Navigator Pro Map Data
  • pkg HERE Maps for Android Package

#5 AOL Instant Messenger Class Data

The CLS file is categorized under Data. It is associated with AOL Instant Messenger, serving as an AOL Instant Messenger Class Data. AOL Instant Messenger (AIM) is an advertisement-supported proprietary instant messaging and presence computer program which uses the OSCAR instant messaging protocol and the TOC protocol to allow registered users to communicate in real time. Visit the website of AOL Instant Messenger for a detailed description of the CLS format.

Application:AOL Instant Messenger
Category:Data files
Magic:- / -

AOL Instant Messenger Class Data related extensions

  • lnf Oyoaha Lookandfeel Interface Elements Data
  • rtree General R-Tree Data
  • clx IBM Rational XDE Collaboration Data
  • hxb QCTest Data

#6 Java Class Data

The CLASS file is categorized under Application. It is associated with Java Runtime Environment, serving as a Java Class Data. CLASS file contains bytecodes for the Java Virtual Machine. Java is a class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. Visit the website of Java Runtime Environment for a detailed description of the CLASS format.

Application:Java Runtime Environment
Category:Application files
Magic:- / -
Aliases:cla, clas, cls

Java Class Data related extensions

  • com Windows Command File
  • hta Microsoft HTML Application
  • app Lotus Symphony Add-in Application
  • prm Adobe Premiere Plugin

Did someone accidentally misspell the CLS filename?

The CLS filename extension may be misspelled. We compiled a list of similar file extensions to help you find errors.

Filename extensions similar to CLS:

Windows can't open your CLS file?

When you try to open a file by double-clicking it, Windows looks at the file's name to figure out what to do. If Windows doesn't know the file type, it'll ask you to choose an app to open this CLS file.

To set the CLS file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. In the Default apps section, you will find various categories. They include Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate. For example, choose Photos for image files, or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the app you want is not listed, click on More apps to see more options. Or, click on Look for an app in the Microsoft Store to search for apps.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set CLS file association. Many apps can open files. They don't need a specific file association to be set.

Handle CLS files with care

Exercise caution when handling CLS files from unknown sources. Files from certain sources can threaten your computer's security. They might contain malware, viruses, or harmful software. To minimize risks, avoid downloading or opening unfamiliar CLS files. Use trusted antivirus software to scan files from unknown sources before opening.

If you find the information on this CLS page useful, please feel free to link to this page. >> CLS file