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
Sass (Syntactically Awesome Style Sheets) is a preprocessor scripting language that is compiled or interpreted into Cascading Style Sh…
An SBT file is a configuration script used by the Scala Build Tool (sbt), which is the primary build system for the Scala programming…
The .scm file extension is primarily associated with source code files written in the Scheme programming language, which is a minimali…
SCons is an open-source software construction tool—that is, a next-generation build tool designed to automate the building of software…
SCSS (Sassy CSS) is a preprocessor scripting language that is compiled or interpreted into Cascading Style Sheets (CSS). SCSS is an ex…
The `.slim` file extension is primarily associated with the Slim Framework, a popular PHP micro-framework used for developing web appl…
A Visual Studio Solution (.sln) file is a structure for organizing projects in Microsoft Visual Studio. It serves as a text-based conf…
A file with the .sln.dotsettings extension is an XML-based configuration file used by JetBrains ReSharper and JetBrains Rider, which a…
An SPS file is a syntax file used by IBM SPSS Statistics, a widely used software suite for the analysis of statistical data. These fil…
A file with the .src extension is a generic source code file containing human-readable instructions written in a programming or script…
The Motorola S-Record file format, often shortened to SREC or S19, is a text-based file format used to represent binary data, primaril…
A file with the .sru extension is a PowerBuilder User Object file created by SAP PowerBuilder, which was originally developed by Sybas…
Stylus is a preprocessor scripting language that is compiled into Cascading Style Sheets (CSS). It is designed to be a concise, flexib…
The .stylelintignore file is a configuration file used in conjunction with Stylelint, a powerful, modern linter that helps developers…
The `.svelte` file extension is used for Svelte component files. Svelte is a modern JavaScript compiler that transforms component code…
An SWC file is a package of pre-compiled Flash symbols and ActionScript code that allows developers to distribute libraries of compone…
A file with the SWN extension is a temporary swap file created by the Vim (Vi IMproved) text editor. When a user opens a file for edit…
A .swo file is a temporary swap file created by the Vim (Vi Improved) text editor. When a user opens a file in Vim, the editor creates…
A .swp file is a temporary swap file created by the Vim (Vi IMproved) text editor or its variants when a user begins editing a file. I…
Sass (Syntactically Awesome Style Sheets) is a preprocessor scripting language that is compiled or interpreted into Cascading Style Sheets (CSS). Sass is a sup…
An SBT file is a configuration script used by the Scala Build Tool (sbt), which is the primary build system for the Scala programming language and is also freq…
The .scm file extension is primarily associated with source code files written in the Scheme programming language, which is a minimalist dialect of Lisp. Schem…
SCons is an open-source software construction tool—that is, a next-generation build tool designed to automate the building of software projects. Think of SCons…
SCSS (Sassy CSS) is a preprocessor scripting language that is compiled or interpreted into Cascading Style Sheets (CSS). SCSS is an extension of CSS, adding fe…
The `.slim` file extension is primarily associated with the Slim Framework, a popular PHP micro-framework used for developing web applications and APIs. These…
A Visual Studio Solution (.sln) file is a structure for organizing projects in Microsoft Visual Studio. It serves as a text-based configuration file that descr…
A file with the .sln.dotsettings extension is an XML-based configuration file used by JetBrains ReSharper and JetBrains Rider, which are popular developer prod…
An SPS file is a syntax file used by IBM SPSS Statistics, a widely used software suite for the analysis of statistical data. These files contain command-line i…
A file with the .src extension is a generic source code file containing human-readable instructions written in a programming or scripting language. While many…
The Motorola S-Record file format, often shortened to SREC or S19, is a text-based file format used to represent binary data, primarily for programming microco…
A file with the .sru extension is a PowerBuilder User Object file created by SAP PowerBuilder, which was originally developed by Sybase. This file format is us…
Stylus is a preprocessor scripting language that is compiled into Cascading Style Sheets (CSS). It is designed to be a concise, flexible, and expressive way to…
The .stylelintignore file is a configuration file used in conjunction with Stylelint, a powerful, modern linter that helps developers avoid errors and enforce…
The `.svelte` file extension is used for Svelte component files. Svelte is a modern JavaScript compiler that transforms component code into highly efficient va…
An SWC file is a package of pre-compiled Flash symbols and ActionScript code that allows developers to distribute libraries of components. It is essentially a…
A file with the SWN extension is a temporary swap file created by the Vim (Vi IMproved) text editor. When a user opens a file for editing in Vim, the applicati…
A .swo file is a temporary swap file created by the Vim (Vi Improved) text editor. When a user opens a file in Vim, the editor creates a swap file to store cha…
A .swp file is a temporary swap file created by the Vim (Vi IMproved) text editor or its variants when a user begins editing a file. Its primary purpose is to…
Everything you need to know about file extensions