List of filename extensions (S–Z) explained

This alphabetical list of filename extensions contains extensions of notable file formats used by multiple notable applications or services.

A–E

See main article: List of filename extensions (A–E).

F–L

See main article: List of filename extensions (F–L).

M–R

See main article: List of filename extensions (M–R).

S

Ext.	Description	Used by
	assembler source code file	Unix
	Scream Tracker Module	Scream Tracker
	Seed7 library / include file	Seed7 interpreter and compiler
^[1]	Spatial Archive and Interchange Format
^[2]	Sass stylesheet language, indented-format
	ACIS ACIS .sat
	SPSS tabular data (binary)	PSPP, SPSS
	Scratch project	Scratch
	Scratch 2.0 project	Scratch
	Scratch 3.0 project	Scratch
	Header	ScriptBasic
	Superbase RDBMS form definition data	Superbase (database)
	For experimental extensions to Scratch	Used by scratchX (scratchx.org)
	Scala source code file	Scala (programming language)
	Scheme source code file
SCR	Screen Protector file	Windows Screen Protector
	Sass stylesheet language
^[3]	SQL Server Compact database file	Microsoft SQL Server Compact
	Seed7 source file	Seed7 interpreter and compiler
	Self Defining Structure provides for N-dimensional very large datasets using HHCode	geographic information systems and relational database management systems
	Spatial Data Transfer Standard
	Secret key ring file	Pretty Good Privacy RSA System
	Self extraction directive file	IExpress
	Video	Tiertex video sequence
SERIES	Encrypted Series Distiller database	Series Distiller
	JAR Digital Signature
	Configuration file	emacs
SFH	backup file for Strike Force Heroes (SFH) on Steam^[4]
	SFX (self-extracting archives) script	RAR
	Unix shell script	Unix shell interpreter
	Shell self-extracting archive	UNSHAR (Unix)
	SSI-enabled HTM file	Server Side Includes
	SSI-enabled HTML file	Server Side Includes
	Shape entitiesESRI shapefile	AutoCADArcGIS
	S.I.C.K. Source File
	Signature file	gpg, PopMail, ThunderByte AntiVirus
	S-Lang source code file
	SolidWorks assembly	SolidWorks
	SolidWorks part	SolidWorks
	SMALLTALK source code file
	Secret Maryo Chronicles Level	Secret Maryo Chronicles
	Smacker video Format (RAD Video)
	SNOBOL4 source code file
	shared object, dynamically linked library	Unix, Linux
	data	SQR Portable Format
^[5]	Still Picture Interchange File Format
	Spin source file	Parallax Propeller Microcontrollers
	SPSS program file (text)	PSPP, SPSS
	SPITBOL source code file
	SPIR-V binary file	Vulkan, Khronos Group
^[6] ^[7]	Ogg Speex bitstream	Xiph.Org Foundation
	Crestron SIMPL Windows compiled program (ZIP format)	Crestron SIMPL Windows
	Structured Query Language	Any SQL database
	SubRip Subtitle file	Most media players
SRX	Series Distiller update XML file	Series Distiller
	Celestia Solar System Catalog file	Celestia
	Stellarium Script	Stellarium
	SMALLTALK source code file	Little Smalltalk
ST	Structured text file
	Celestia Star Catalog file	Celestia
	OpenOffice.org XML spreadsheet template	OpenOffice.org Calc
	OpenOffice.org XML drawing template	OpenOffice.org Draw
	Standard for the Exchange of Product Data	universal format for CAD exchange per ISO 10303
	OpenOffice.org XML presentation template	OpenOffice.org Impress
^[8]	Stockholm multiple sequence alignment	Bioinformatics tools eg HMMER, Xrate, Jalview
STL	surface geometry of a three-dimensional object	software by 3D Systems
	SSI-enabled HTML file	Server Side Includes
	Stockholm multiple sequence alignment	Bioinformatics tools eg HMMER, Xrate, Jalview
STORY	Encrypted Story Distiller database	Story Distiller
	Standard for the Exchange of Product Data	universal format for CAD exchange per ISO 10303
	OpenOffice.org XML text document template	OpenOffice.org Writer
STX	Story Distiller update XML	Story Distiller
	Surface topography (in native "SURF" format)	MountainsMap
	Represents the ServiceHost instance hosted by Internet Information Services	Windows Communication Foundation
SVELTE	Svelte source code	Svelte
	Scalable Vector Graphics
^[9]	Shockwave Flash	Macromedia, Adobe Flash Player
	SWIG source code	SWIG
	Swift source code	Swift (programming language)
	split Windows Imaging Format	ImageX, DISM, 7-Zip, wimlib
	OpenOffice.org XML spreadsheet	OpenOffice.org Calc
	OpenOffice.org XML drawing	OpenOffice.org Draw
	OpenOffice.org XML master document
	OpenOffice.org XML presentation	OpenOffice.org Impress
	OpenOffice.org XML formula	OpenOffice.org Calc
	3DS Process file	3D Studio
	OpenOffice.org XML text document	OpenOffice.org Writer
SYLK	Symbolic Link (SYLK) file	Windows
SYMBOLICLINK	Replace file for a symbolic link	Unix-like OSs

T

Ext.	Description	Used by
	Audio codec, Lossless audio file format	Winamp (+Plugin), foobar2000 (+Plugin), Media Player Classic – BE
	tar archive	tar and other file archivers with support
^[10]	tar archive compressed with compress	tar and other file archivers with support
	tar archive compressed with Bzip2	tar and other file archivers with support
	Theme Colour file	Saturn CMS
TER	Terragen heightmap file	Terragen scenery generator
	Truevision Advanced Raster Graphics Adapter image
	Target configuration file	Target active security software
	tar archive compressed with gzip	tar and other file archivers with support
	Thumbnail File	GoPro, Android, some versions of iOS (Accessible via computer or Jailbreak, on User/Media/PhotoData/Metadata/DCIM)
	See TIFF
	Tag Image File Format image
^[11]	Type library	A binary file with information about a COM or DCOM object so other applications can use it at runtime. Created by Visual C++ or Visual Studio. Used by many Windows applications.
	tar archive compressed with LZMA	tar and other file archivers with support
^[12]	Temporary file
^[13]	Torrent file	BitTorrent clients (various)
	MPEG transport stream	Video broadcasting, digital video cameras
^[14]	TypeScript
	Godot Engine Text Scene file	Godot Engine
^[15]	Tab-separated values
	TrueType Font collection
	TrueType Font file
	Tableau Software Workbook file
	tar archive compressed with xz	tar and other file archivers with support
	Same as TBZ
	tar archive compressed with Zstandard

U

Ext.	Description	Used by
	Espire source code file	Geoworks UI Compiler Geos
	Qt Designer's UI File	Trolltech Qt Designer
	Umple UML Programming Language Format	Umple
	Text file containing finite elements nodal coordinates and more See notes	Originally used by SDRC for its I-deas software; a lot of simulation software uses it today
	Uniform Office Format spreadsheet
	Uniform Office Format text
UPD	Update file for Storage
UPS	ROM patch file
	Remote file shortcut	Microsoft Windows
USDZ	Augmented Reality (AR) File	Apple, Pixar
UST	Vocal synthesis track data	UTAU
USTX	Vocal synthesis track data	OpenUtau
	datafile	uTorrent
UXF	UML Exchange Format

V

Ext.	Description	Used by
	Coq source file
	Verilog source file
V3	Victoria 3 save game file	Victoria 3
	vvvv patch	vvvv
V64^[16]	ROM image from an N64 cartridge	DoctorV64, Doctor V64 junior, Project 64 and other N64 emulators
	Visual Basic .Net source file	Visual Basic .NET
^[17]	virtual machine settings file (in XML format)	VirtualBox
^[18]	VirtualBox extension package	VirtualBox
	Visual Basic .Net project file	Visual Basic .Net Express and Visual Studio 2003-2010 Project
	Visual Basic Custom Control file	Visual Basic
	VBScript script file	VBScript
	Visual Basic eXtension	Visual Basic
	VeraCrypt Disk Encrypted file	Open Source VeraCrypt
	Graphite – 2D and 3D drafting	Ashlar-Vellum
	VocaListener voice scanner file	VocaListener Plug-in (Vocaloid3)
	Targa bitmap graphics	many raster graphics editors
	Virtual Disk Image	VirtualBox
	Visio web drawing	Microsoft Visio
	Visio XML drawing	Microsoft Visio
	Virtual Floppy Disk	Windows Virtual PC (among others)
VI	Virtual Instrument	LabVIEW
	Hyper-V Exported Virtual Machine	Microsoft
^[19]	Virtual Disk file	VMware
	Nokia message file format	Text Message Editor (Nokia PC Suite)
^[20] ^[21]	Video Object	DVD-R, DVD-RW
	virtual machine configuration file	VMware
	Valve package	Source engine games
	Garmin Voice Processing Module
	Visual Paradigm Project	Visual Paradigm for UML
VPR	Vocal synthesizer track data	Vocaloid 5
	Hardware description language	Altera
	LateX Beamer file containing verbatim commands	LaTeX Beamer
	Veeam reversed incremental backup archive	Veeam software
	Vellum Solids	Ashlar-Vellum
	Visio drawing	Microsoft Visio
^[22]	Visio drawing	Microsoft Visio
	Visual Simulation Model	VisSim
	Vocal synthesizer track data	Vocaloid 2
VSQx	Vocal synthesizer track data	Vocaloid 3, Vocaloid 4
	Truevision Vista graphics	many raster graphics editors
	Microsoft Office add-in file	Microsoft Visual Studio
	VisualSVN Server repository backup	VisualSVN Server
	Valve Texture Format file^[23]	Valve Corporation
	Visual Understanding Environment map	Visual Understanding Environment
VVVVVV	VVVVVV map file	VVVVVV

W

Ext.	Description	Used by
WAD	Default package format for Doom that contains sprites, levels, and game data	Doom and Doom II
WAD	Package containing Wii Channel data, such as Virtual Console games. It is commonly used in homebrew to install custom channels, and can be installed with a WAD Manager	Nintendo Wii
	Sound format (Microsoft Windows RIFF WAVE)	Media Player
	Royalty-free video/audio container	HTML5
WIN	Game code for GameMaker games	GameMaker
	Game save file for The Witness	The Witness
	Spreadsheet	Lotus 1-2-3 version 2.x – Lotus Symphony 1.1+
	Spreadsheet	Lotus 1-2-3 version 3.x
	Spreadsheet	Lotus 1-2-3 version 1A – Lotus Symphony 1.0, Microsoft Works
WL	Wolfram Language package^[24] ^[25]
WLMP	Windows Live Moviemaker Project, contains paths from where the images/audios/videos of the project are located	Windows Live Movie Maker^[26]
WLS	Wolfram Script^[27]	Wolfram Language
	Windows Media Audio file Advanced Systems Format
	Windows Media Player database	Windows Media Player
	Windows MetaFile vector graphics
	Windows Media Video file Advanced Systems Format
	WoS bibliographic reference file	ISI/Clarivate Analytics
WPS	Wii U plugin for aroma	Aroma Environnement (Wii U)
WS	Whitespace programming language^[28]	Whitespace programming language
	Text document
WUHB	Wii U Homebrew Bundle	Aroma environnement (Wii U)

X

Ext.	Description	Used by
	LEX source code file
	XBasic Source code file	Xbasic
	x3d and xdart Formats
	Xara graphics file	Files created by Xara Photo & Graphic Designer (formerly Xara Xtreme and Xara Studio); early versions used the extension ART
	eXtensible ARchive	xar, 7-Zip
	eXtensible Business Reporting Language instance file	eXtensible Business Reporting Language
	Gimp image file	GNU Image Manipulation Program
	Directory Manipulator for 32-bit Protected Mode	Xenotech Research Labs
	Xenon – for Associative 3D Modeling	Ashlar-Vellum
	Xbox 360 Executable File
	Microsoft Works spreadsheet or chart file, very similar to Microsoft Excel's XLS	Microsoft Works
^[29]	Microsoft Excel Spreadsheet	Microsoft Excel
	Microsoft Excel 2007 Binary Workbook (BIFF12)(Spreadsheets)	Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
	Microsoft Excel 2007 Macro-Enabled Workbook (Spreadsheets)	Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
^[30]	Office Open XML Workbook (Spreadsheets)	Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
	FastTracker 2 extended module	AWAVE, Mod4Win, FastTracker, ImpulseTracker
	eXtensible Markup Language file
	eXtensible Music Format
	eXtended Pattern	FastTracker 2
	X-Plane system file	Laminar Research
	Open XML Paper Specification / OpenXPS	Open standard document format initially created by Microsoft and similar in concept to Adobe PDF files
^[31] ^[32]	XML schema description
	data	Microsoft InfoPath file
^[33]	XSL Stylesheet
	XSLT file
	Microsoft InfoPath template	Microsoft InfoPath
	XML Sharable Playlist Format
	XX-encoded file (ASCII)	XXDECODE
	XX-encoded file (ASCII)	XXDECODE
	Singer Embroidery Format	Embroidermodder
	Molecular coordinates	XMol, RasMol
	a lossless data compression file format incorporating the LZMA/LZMA2 compression algorithms.	xz

Y

Ext.	Description	Used by
	YACC grammar file	Yacc/Bison
^[34]	YML markup file	domain specific language output to XML
^[35]	YAML source file	YAML (data serialization language)

Z

Ext.	Description	Used by
^[36]	ZIP (file format)	PKZip – WinZip – Mac OS X
	REXX scripting language for ZOC_(software)	ZOC terminal emulator
	Script for Minecraft mod MineTweaker^[37] and CraftTweaker^[38]	Minecraft Mods
	ZStandard, a lossless data compression file format.	zstd

See also

• List of filename extensions
• List of file formats

External links

• File Extension Resource
• The File Extensions Resource
• File information site
• File Extension Database
• File format finder
• List of file types

Notes and References

1. Web site: CGIS-SAIF Canadian geomatics interchange standard: spatial archive and interchange format: formal definition (release 3.2) . British Columbia Ministry of Environment & Climate Change Strategy. December 1992 . 2020-09-25.
2. Web site: Syntax . 2020-09-25 . sass-lang.com.
3. Web site: SQL Server Compact and LINQ to SQL . Microsoft Docs . 12 January 2021.
4. Web site: 2024-02-15 . All my progress and stuff is gone. Why? .
5. Web site: Overview of JPEG . 2020-09-27 . jpeg.org.
6. Web site: MIME Types and File Extensions . 2009-10-04 . XiphWiki . 2009-10-24 .
7. 5334 . 10 . Ogg Media Types . Ogg Media Types --> . I. Goncalves . S. Pfeiffer . C. Montgomery . Chris Montgomery . 2008 . 10.17487/RFC5334.
8. Web site: Alignment Fileformats . 22 May 2019 . 22 May 2019.
9. Web site: SWF File Format Specification Version 10 . 2012-02-26 . dead . https://web.archive.org/web/20120131083755/http://www.adobe.com/content/dam/Adobe/en/devnet/swf/pdf/swf_file_format_spec_v10.pdf . 2012-01-31 .
10. Web site: GNU tar 1.32: 8.1 Using Less Space through Compression . 2019-02-23 . GNU . 2019-08-11.
11. Web site: COM, DCOM, and Type Libraries. 2020-05-31 . 2020-10-02 . Microsoft .
12. Web site: What are temporary (.TMP) files and how do I delete them? . 2020-12-18 . fileinfo.com.
13. Web site: BEP-0003: The BitTorrent Protocol Specification . Bittorrent.org . 2009-10-22.
14. Web site: TypeScript Documentation: The Basics.
15. Web site: Definition of tab-separated-values (tsv) . Internet Assigned Numbers Authority (IANA).
16. Web site: V64 File - What is a .v64 file and how do I open it? . 2023-11-26 . fileinfo.com.
17. Web site: Oracle VM VirtualBox User Manual, Chapter 10. Technical background . Oracle Corporation . 28 December 2016.
18. Web site: Oracle VM VirtualBox User Manual, Chapter 1.5. Installing VirtualBox and extension packs . Oracle Corporation . 28 December 2016.
19. Web site: Virtual Disk Format 5.0 . December 20, 2011 . VMware .
20. DVD FLLC (2009-02) DVD Book Construction – list of all available DVD Books, Retrieved on 2009-07-24
21. DVD FLLC DVD Format Book – History of Supplements for DVD Books, Retrieved on 2009-07-24
22. Web site: Introduction to the Visio file format (.vsdx) . 2015-03-09 . 2020-11-04 . Microsoft.
23. Web site: Valve Texture Format . developer.valvesoftware . 2022-09-07.
24. Web site: File ▶ New ▶ Package .
25. Web site: Create a Package File .
26. Web site: WLMP File Extension – What is a .wlmp file and how do I open it? . 2021-03-03 . fileinfo.com.
27. Web site: File ▶ New ▶ Script .
28. Web site: Whitespace Language - Online Decoder/Interpreter/Translator . 2024-04-25 . www.dcode.fr . en.
29. Web site: [MS-XLS]

    Excel Binary File Format (.xls) Structure ]

    . 2020-10-15 . 2020-11-04 . Microsoft.
30. Web site: Excel (.xlsx) Extensions to the Office Open XML SpreadsheetML File Format . 2020-02-19 . 2020-08-29.
31. Web site: W3C XML Schema Definition Language (XSD) 1.1 Part 1: Structures . 2012-04-05 . w3.org . 2020-09-25.
32. Web site: W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes . 2012-04-05 . w3.org . 2020-09-25.
33. Web site: The Extensible Stylesheet Language Family (XSL) . 2020-11-04 . 2017-09-09 . w3.org.
34. Web site: YML – Why a Markup Language?! . 2020-09-25 . 2019-11-02 . fdik.org.
35. Web site: YAML Ain't Markup Language (YAML) Version 1.2 . YAML.org . 2019-05-29.
36. Web site: ITTF . ISO/IEC 21320-1:2015 Document Container File - Part 1: Core . 2015.
37. Web site: Hebben . Stan . Tutorial:Introduction . Minetweaker 3 . 28 September 2014.
38. Web site: Crafttweaker Documentation . crafttweaker.readthedocs.io . 2019-11-17.