List of filename extensions (S–Z)

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

Contents

• !$@
• 0-9
• A
• B
• C
• D
• E
• F
• G
• H
• I
• J
• K
• L
• M
• N
• O
• P
• Q
• R
• S
• T
• U
• V
• W
• X
• Y
• Z

• See also
• References

A–E

Main article: List of filename extensions (A–E)

F–L

Main article: List of filename extensions (F–L)

M–R

Main article: List of filename extensions (M–R)

S

Ext.	Description	Used by
S	assembler source code file	Unix
S3M	Scream Tracker Module	Scream Tracker
S7I	Seed7 library / include file	Seed7 interpreter and compiler
SAIF [1]	Spatial Archive and Interchange Format
SASS [2]	Sass stylesheet language, indented-format
SAT	ACIS ACIS .sat
SAV	SPSS tabular data (binary)	PSPP, SPSS
SB	Scratch 1.x project	Scratch
SB2	Scratch 2.0 project	Scratch
SB3	Scratch 3.0 project	Scratch
SBH	Header	ScriptBasic
SBV	Superbase RDBMS form definition data	Superbase (database)
SBX	For experimental extensions to Scratch	Used by scratchX (scratchx.org)
SCALA	Scala source code file	Scala (programming language)
SCM	Scheme source code file
SCR	Screen Protector file	Windows Screen Protector
SCSS [2]	Sass stylesheet language
SDF [3]	SQL Server Compact database file	Microsoft SQL Server Compact
SD7	Seed7 source file	Seed7 interpreter and compiler
SDS	Self Defining Structure provides for N-dimensional very large datasets using HHCode	geographic information systems and relational database management systems
SDTS	Spatial Data Transfer Standard
SEC	Secret key ring file	Pretty Good Privacy RSA System
SED	Self extraction directive file	IExpress
SEQ	Video	Tiertex video sequence
SERIES	Encrypted Series Distiller database	Series Distiller
SF	JAR Digital Signature
SFB	Configuration file	emacs
SFH	backup file for Strike Force Heroes (SFH) on Steam [4]
SFX	SFX (self-extracting archives) script	RAR
SH	Unix shell script	Unix shell interpreter
SHAR	Shell self-extracting archive	UNSHAR (Unix)
SHTM	SSI-enabled HTM file	Server Side Includes
SHTML	SSI-enabled HTML file	Server Side Includes
SHX	Shape entities ESRI shapefile	AutoCAD ArcGIS
SIC	S.I.C.K. Source File
SIG	Signature file	gpg, PopMail, ThunderByte AntiVirus
SL	S-Lang source code file
SLDASM	SolidWorks assembly	SolidWorks
SLDPRT	SolidWorks part	SolidWorks
SM	SMALLTALK source code file
SMCLVL	Secret Maryo Chronicles Level	Secret Maryo Chronicles
SMK	Smacker video Format (RAD Video)
SNO	SNOBOL4 source code file
SO	shared object, dynamically linked library	Unix, Linux
SPF	data	SQR Portable Format
SPIFF [5]	Still Picture Interchange File Format
SPIN	Spin source file	Parallax Propeller Microcontrollers
SPS	SPSS program file (text)	PSPP, SPSS
SPT	SPITBOL source code file
SPV	SPIR-V binary file	Vulkan, Khronos Group
SPX [6] [7]	Ogg Speex bitstream	Xiph.Org Foundation
SPZ	Crestron SIMPL Windows compiled program (ZIP format)	Crestron SIMPL Windows
SQL	Structured Query Language	Any SQL database
SRT	SubRip Subtitle file	Most media players
SRX	Series Distiller update XML file	Series Distiller
SSC	Celestia Solar System Catalog file	Celestia
SSC	Stellarium Script	Stellarium
ST	SMALLTALK source code file	Little Smalltalk
ST	Structured text file
STC	Celestia Star Catalog file	Celestia
STC	OpenOffice.org XML spreadsheet template	OpenOffice.org Calc
STD	OpenOffice.org XML drawing template	OpenOffice.org Draw
STEP	Standard for the Exchange of Product Data	universal format for CAD exchange per ISO 10303
STI	OpenOffice.org XML presentation template	OpenOffice.org Impress
STK [8]	Stockholm multiple sequence alignment	Bioinformatics tools eg HMMER, Xrate, Jalview
STL	surface geometry of a three-dimensional object	software by 3D Systems
STM	SSI-enabled HTML file	Server Side Includes
STO [8]	Stockholm multiple sequence alignment	Bioinformatics tools eg HMMER, Xrate, Jalview
STORY	Encrypted Story Distiller database	Story Distiller
STP	Standard for the Exchange of Product Data	universal format for CAD exchange per ISO 10303
STW	OpenOffice.org XML text document template	OpenOffice.org Writer
STX	Story Distiller update XML	Story Distiller
SUR	Surface topography (in native "SURF" format)	MountainsMap
SVC	Represents the ServiceHost instance hosted by Internet Information Services	Windows Communication Foundation
SVELTE	Svelte source code	Svelte
SVG	Scalable Vector Graphics
SWF [9]	Shockwave Flash	Macromedia, Adobe Flash Player
SWG	SWIG source code	SWIG
SWIFT	Swift source code	Swift (programming language)
SWM	split Windows Imaging Format	ImageX, DISM, 7-Zip, wimlib
SXC	OpenOffice.org XML spreadsheet	OpenOffice.org Calc
SXD	OpenOffice.org XML drawing	OpenOffice.org Draw
SXG	OpenOffice.org XML master document
SXI	OpenOffice.org XML presentation	OpenOffice.org Impress
SXM	OpenOffice.org XML formula	OpenOffice.org Calc
SXP	3DS Process file	3D Studio
SXW	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
TAK	Audio codec, Lossless audio file format	Winamp (+Plugin), foobar2000 (+Plugin), Media Player Classic – BE
TAR	tar archive	tar and other file archivers with support
TAZ [10]	tar archive compressed with compress	tar and other file archivers with support
TB2 [10]	tar archive compressed with Bzip2	tar and other file archivers with support
TBZ [10]
TBZ2 [10]
TC	Theme Colour file	Saturn CMS
TER	Terragen heightmap file	Terragen scenery generator
TGA	Truevision Advanced Raster Graphics Adapter image
TGT	Target configuration file	Target active security software
TGZ [10]	tar archive compressed with gzip	tar and other file archivers with support
THM	Thumbnail File	GoPro, Android, some versions of iOS (Accessible via computer or Jailbreak, on User/Media/PhotoData/Metadata/DCIM)
TIF	See TIFF
TIFF	Tag Image File Format image
TLB [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.
TLZ [10]	tar archive compressed with LZMA	tar and other file archivers with support
TMP [12]	Temporary file
TORRENT [13]	Torrent file	BitTorrent clients (various)
TQL	The quest lessons	TheQuest
TS	MPEG transport stream	Video broadcasting, digital video cameras
TS [14]	TypeScript
TSCN	Godot Engine Text Scene file	Godot Engine
TSV [15]	Tab-separated values
TTC	TrueType Font collection
TTF	TrueType Font file
TWB	Tableau Software Workbook file
TXT	Text file
TXZ [10]	tar archive compressed with xz	tar and other file archivers with support
TZ2 [10]	Same as TBZ
TZST [10]	tar archive compressed with Zstandard

U

Ext.	Description	Used by
UI	Espire source code file	Geoworks UI Compiler Geos
UI	Qt Designer's UI File	Trolltech Qt Designer
UMP	Umple UML Programming Language Format	Umple
UNV	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
UOS	Uniform Office Format spreadsheet
UOT	Uniform Office Format text
UPD	Update file for Storage
UPS	ROM patch file
URL	Remote file shortcut	Microsoft Windows
USDZ	Augmented Reality (AR) File	Apple, Pixar
UST	Vocal synthesis track data	UTAU
USTX	Vocal synthesis track data	OpenUtau
UT!	datafile	uTorrent
UXF	UML Exchange Format

V

Ext.	Description	Used by
V	Coq source file
V	Verilog source file
V3	Victoria 3 save game file	Victoria 3
V4P	vvvv patch	vvvv
V64 [16]	ROM image from an N64 cartridge	DoctorV64, Doctor V64 junior, Project 64 and other N64 emulators
VB	Visual Basic .Net source file	Visual Basic .NET
VBOX [17]	virtual machine settings file (in XML format)	VirtualBox
VBOX-EXTPACK [18]	VirtualBox extension package	VirtualBox
VBPROJ	Visual Basic .Net project file	Visual Basic .Net Express and Visual Studio 2003-2010 Project
VBR	Visual Basic Custom Control file	Visual Basic
VBS	VBScript script file	VBScript
VBX	Visual Basic eXtension	Visual Basic
VC	VeraCrypt Disk Encrypted file	Open Source VeraCrypt
VC6	Graphite – 2D and 3D drafting	Ashlar-Vellum
VCLS	VocaListener voice scanner file	VocaListener Plug-in (Vocaloid3)
VDA	Targa bitmap graphics	many raster graphics editors
VDI	Virtual Disk Image	VirtualBox
VDW	Visio web drawing	Microsoft Visio
VDX	Visio XML drawing	Microsoft Visio
VFD	Virtual Floppy Disk	Windows Virtual PC (among others)
VI	Virtual Instrument	LabVIEW
VMCZ	Hyper-V Exported Virtual Machine	Microsoft
VMDK [19]	Virtual Disk file	VMware
VMG	Nokia message file format	Text Message Editor (Nokia PC Suite)
VOB [20] [21]	Video Object	DVD-R, DVD-RW
VMX	virtual machine configuration file	VMware
VPK	Valve package	Source engine games
VPM	Garmin Voice Processing Module
VPP	Visual Paradigm Project	Visual Paradigm for UML
VPR	Vocal synthesizer track data	Vocaloid 5
VQM	Hardware description language	Altera
VRB	LateX Beamer file containing verbatim commands	LaTeX Beamer
VRB	Veeam reversed incremental backup archive	Veeam software
VS	Vellum Solids	Ashlar-Vellum
VSD	Visio drawing	Microsoft Visio
VSDX [22]	Visio drawing	Microsoft Visio
VSM	Visual Simulation Model	VisSim
VSQ	Vocal synthesizer track data	Vocaloid 2
VSQx	Vocal synthesizer track data	Vocaloid 3, Vocaloid 4
VST	Truevision Vista graphics	many raster graphics editors
VSTO	Microsoft Office add-in file	Microsoft Visual Studio
VSVNBAK	VisualSVN Server repository backup	VisualSVN Server
VTF	Valve Texture Format file [23]	Valve Corporation
VUE	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
WAV	Sound format (Microsoft Windows RIFF WAVE)	Media Player
WEBM	Royalty-free video/audio container	HTML5
WIN	Game code for GameMaker games	GameMaker
WITNESS_CAMPAIGN	Game save file for The Witness	The Witness
WK1	Spreadsheet	Lotus 1-2-3 version 2.x – Lotus Symphony 1.1+
WK3	Spreadsheet	Lotus 1-2-3 version 3.x
WKS	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
WMA	Windows Media Audio file Advanced Systems Format
WMDB	Windows Media Player database	Windows Media Player
WMF	Windows MetaFile vector graphics
WMV	Windows Media Video file Advanced Systems Format
WOS	WoS bibliographic reference file	ISI/Clarivate Analytics
WPS	Wii U plugin for aroma	Aroma Environnement (Wii U)
WS	Whitespace programming language, WonderSwan ROM [28]	Whitespace programming language, WonderSwan ROM
WSC	WonderSwan Color ROM
WTX	Text document
WUHB	Wii U Homebrew Bundle	Aroma environnement (Wii U)

X

Ext.	Description	Used by
X	LEX source code file
X	XBasic Source code file	Xbasic
X3D	x3d and xdart Formats
XAR	Xara graphics file	Files created by Xara Photo & Graphic Designer (formerly Xara Xtreme and Xara Studio); early versions used the extension ART
XAR	eXtensible ARchive	xar, 7-Zip
XBRL	eXtensible Business Reporting Language instance file	eXtensible Business Reporting Language
XCF	Gimp image file	GNU Image Manipulation Program
XDM	Directory Manipulator for 32-bit Protected Mode	Xenotech Research Labs
XE	Xenon – for Associative 3D Modeling	Ashlar-Vellum
XEX	Xbox 360 Executable File
XLR	Microsoft Works spreadsheet or chart file, very similar to Microsoft Excel's XLS	Microsoft Works
XLS [29]	Microsoft Excel Spreadsheet	Microsoft Excel
XLSB	Microsoft Excel 2007 Binary Workbook (BIFF12)(Spreadsheets)	Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
XLSM	Microsoft Excel 2007 Macro-Enabled Workbook (Spreadsheets)	Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
XLSX [30]	Office Open XML Workbook (Spreadsheets)	Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
XM	FastTracker 2 extended module	AWAVE, Mod4Win, FastTracker, ImpulseTracker
XML	eXtensible Markup Language file
XMF	eXtensible Music Format
XP	eXtended Pattern	FastTracker 2
XPL	X-Plane system file	Laminar Research
XPS	Open XML Paper Specification / OpenXPS	Open standard document format initially created by Microsoft and similar in concept to Adobe PDF files
XSD [31] [32]	XML schema description
XSF	data	Microsoft InfoPath file
XSL [33]	XSL Stylesheet
XSLT [33]	XSLT file
XSN	Microsoft InfoPath template	Microsoft InfoPath
XSPF	XML Sharable Playlist Format
XX	XX-encoded file (ASCII)	XXDECODE
XXE	XX-encoded file (ASCII)	XXDECODE
XXX	Singer Embroidery Format	Embroidermodder
XYZ	Molecular coordinates	XMol, RasMol
XZ	a lossless data compression file format incorporating the LZMA/LZMA2 compression algorithms.	xz

Y

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

Z

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

See also

• List of filename extensions
• List of file formats

References

1. "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. Retrieved 2020-09-25.
2. "Syntax". sass-lang.com. Retrieved 2020-09-25.
3. "SQL Server Compact and LINQ to SQL". Microsoft Docs. Retrieved 12 January 2021.
4. "All my progress and stuff is gone. Why?". 2024-02-15.
5. "Overview of JPEG". jpeg.org. Retrieved 2020-09-27.
6. "MIME Types and File Extensions". XiphWiki. 2009-10-04. Retrieved 2009-10-24.
7. I. Goncalves; S. Pfeiffer; C. Montgomery (2008). Ogg Media Types. sec. 10. doi: 10.17487/RFC5334 . RFC 5334.
8. "Alignment Fileformats". 22 May 2019. Retrieved 22 May 2019.
9. "SWF File Format Specification Version 10" (PDF). Archived from the original (PDF) on 2012-01-31. Retrieved 2012-02-26.
10. "GNU tar 1.32: 8.1 Using Less Space through Compression". GNU. 2019-02-23. Retrieved 2019-08-11.
11. "COM, DCOM, and Type Libraries". Microsoft. 2020-05-31. Retrieved 2020-10-02.
12. "What are temporary (.TMP) files and how do I delete them?". fileinfo.com. Retrieved 2020-12-18.
13. "BEP-0003: The BitTorrent Protocol Specification". Bittorrent.org. Retrieved 2009-10-22.
14. "TypeScript Documentation: The Basics".
15. "Definition of tab-separated-values (tsv)". Internet Assigned Numbers Authority (IANA).
16. "V64 File - What is a .v64 file and how do I open it?". fileinfo.com. Retrieved 2023-11-26.
17. "Oracle VM VirtualBox User Manual, Chapter 10. Technical background". Oracle Corporation. Retrieved 28 December 2016.
18. "Oracle VM VirtualBox User Manual, Chapter 1.5. Installing VirtualBox and extension packs". Oracle Corporation. Retrieved 28 December 2016.
19. "Virtual Disk Format 5.0" (PDF). VMware. December 20, 2011.
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. "Introduction to the Visio file format (.vsdx)". Microsoft. 2015-03-09. Retrieved 2020-11-04.
23. "Valve Texture Format". developer.valvesoftware. Retrieved 2022-09-07.
24. "File ▶ New ▶ Package".
25. "Create a Package File".
26. "WLMP File Extension – What is a .wlmp file and how do I open it?". fileinfo.com. Retrieved 2021-03-03.
27. "File ▶ New ▶ Script".
28. "Whitespace Language - Online Decoder/Interpreter/Translator". www.dcode.fr. Retrieved 2024-04-25.
29. "[MS-XLS]: Excel Binary File Format (.xls) Structure". Microsoft. 2020-10-15. Retrieved 2020-11-04.
30. "Excel (.xlsx) Extensions to the Office Open XML SpreadsheetML File Format". 2020-02-19. Retrieved 2020-08-29.
31. "W3C XML Schema Definition Language (XSD) 1.1 Part 1: Structures". w3.org. 2012-04-05. Retrieved 2020-09-25.
32. "W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes". w3.org. 2012-04-05. Retrieved 2020-09-25.
33. "The Extensible Stylesheet Language Family (XSL)". w3.org. 2017-09-09. Retrieved 2020-11-04.
34. "YML – Why a Markup Language?!". fdik.org. 2019-11-02. Retrieved 2020-09-25.
35. "YAML Ain't Markup Language (YAML) Version 1.2". YAML.org. Retrieved 2019-05-29.
36. "ISO/IEC 21320-1:2015 Document Container File — Part 1: Core". ITTF. 2015.
37. Hebben, Stan. "Tutorial:Introduction". Minetweaker 3. Retrieved 28 September 2014.
38. "Crafttweaker Documentation". crafttweaker.readthedocs.io. Retrieved 2019-11-17.

External links

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