Browse file extensions by category or letter. Learn what each file type is used for and find software that can open, view, edit, or convert it.
Use this directory to look up file formats, understand what files are used for, and find compatible applications for Windows, macOS, Linux, mobile, and online tools.
Refine your search with categories and letters
A CBP file is a project file created by Code::Blocks, which is a free, open-source, and cross-platform Integrated Development Environm…
The `.cjs` file extension is used for JavaScript files that contain code written using the CommonJS module system. CommonJS is a modul…
A .clang-format file is a configuration file used by ClangFormat, a highly popular tool developed under the LLVM project designed to a…
CMake is an open-source, cross-platform family of tools designed to build, test, and package software. The .cmake file extension is pr…
A .cpp file is a source code file written in the C++ programming language, which is a high-level, general-purpose language that evolve…
A CSHTML file is a web page that uses Razor syntax with C# code. It's primarily used in ASP.NET MVC and ASP.NET Core web applications…
A .csproj file is a project file used by the Microsoft .NET framework to store information about a C# software project. It is an XML-f…
The .csproj.user file is a specialized configuration file used by Microsoft Visual Studio to store user-specific settings for a C# pro…
A CSS (Cascading Style Sheet) file is a text document that contains style rules for controlling the presentation of HTML or XML docume…
The CSX file extension represents a C# Script file, which is a specialized version of the standard C# source code file. Unlike traditi…
A .cvsignore file is a configuration file used by the Concurrent Versions System (CVS), an older revision control system. It is used t…
A .cxx file is a source code file written in the C++ programming language. It is one of several common extensions used for C++ source…
A CBP file is a project file created by Code::Blocks, which is a free, open-source, and cross-platform Integrated Development Environment (IDE) designed for C…
The `.cjs` file extension is used for JavaScript files that contain code written using the CommonJS module system. CommonJS is a module format designed primari…
A .clang-format file is a configuration file used by ClangFormat, a highly popular tool developed under the LLVM project designed to automatically format sourc…
CMake is an open-source, cross-platform family of tools designed to build, test, and package software. The .cmake file extension is primarily used for CMake sc…
A .cpp file is a source code file written in the C++ programming language, which is a high-level, general-purpose language that evolved from the original C lan…
A CSHTML file is a web page that uses Razor syntax with C# code. It's primarily used in ASP.NET MVC and ASP.NET Core web applications. CSHTML files combine HTM…
A .csproj file is a project file used by the Microsoft .NET framework to store information about a C# software project. It is an XML-formatted text file that a…
The .csproj.user file is a specialized configuration file used by Microsoft Visual Studio to store user-specific settings for a C# project. While the primary…
A CSS (Cascading Style Sheet) file is a text document that contains style rules for controlling the presentation of HTML or XML documents. It defines how eleme…
The CSX file extension represents a C# Script file, which is a specialized version of the standard C# source code file. Unlike traditional .cs files that must…
A .cvsignore file is a configuration file used by the Concurrent Versions System (CVS), an older revision control system. It is used to specify files and direc…
A .cxx file is a source code file written in the C++ programming language. It is one of several common extensions used for C++ source files, alongside .cpp and…
Everything you need to know about file extensions