List of filename extensions (S–Z)

Short description: none

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

## Contents

* 1 A–E
* 2 F–L
* 3 M–R
* 4 S
* 5 T
* 6 U
* 7 V
* 8 W
* 9 X
* 10 Y
* 11 Z
* 12 See also
* 13 References
* 14 External links

## 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

|
|

assembler source code file  | Unix
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 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
SF | JAR Digital Signature  |
SFB | Configuration file  | emacs
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

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[4] | 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
Ogg Speex bitstream  | Xiph.Org Foundation
SPZ | Crestron SIMPL Windows compiled program (ZIP format)  | Crestron SIMPL Windows
SQL | Structured Query Language | Any SQL database
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[5] | 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[5] | Stockholm multiple sequence alignment | Bioinformatics tools eg HMMER, Xrate, Jalview
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
SUR | Surface topography (in native "SURF" format)  | MountainsMap
SVC | Represents the ServiceHost instance hosted by Internet Information Services | Windows Communication Foundation
SVG | Scalable Vector Graphics |
SWF[6] | 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[7] | tar archive compressed with compress | tar and other file archivers with support
TB2[7] | tar archive compressed with Bzip2 | tar and other file archivers with support
TBZ[7]
TBZ2[7]
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[7] | 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[8] | 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[7] | tar archive compressed with LZMA  | tar and other file archivers with support
TMP[9] | Temporary file  |
TORRENT[10] | Torrent file | BitTorrent clients (various)
TS | MPEG transport stream | Video broadcasting, digital video cameras
TS[11] | TypeScript |
TSV[12] | Tab-separated values  |
TTC | TrueType Font collection  |
TTF | TrueType Font file  |
TXZ[7] | tar archive compressed with xz | tar and other file archivers with support
TZ2[7] | Same as TBZ
TZST[7] | 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 use it today
UOS | Uniform Office Format spreadsheet  |
UOT | Uniform Office Format text  |
UPS  | ROM patch file  |
URL | Remote file shortcut  | Microsoft Windows
USDZ  | Augmented Reality (AR) File  | Apple, Pixar
UST  | Vocal synthesis track data  | UTAU
UT! | datafile  | uTorrent
UXF  | UML Exchange Format  |

## V

Ext. | Description | Used by

|
|

V | Coq source file  |
V | Verilog source file  |
V4P | vvvv patch  | vvvv
V64[13] | ROM image from an N64 cartritge  | DoctorV64, Doctor V64 junior, Project 64 and other N64 emulators
VB | Visual Basic .Net source file  | Visual Basic .NET
VBOX[14] | virtual machine settings file (in XML format)  | VirtualBox
VBOX-EXTPACK[15] | 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
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[16] | Virtual Disk file  | VMware
VMG | Nokia message file format  | Text Message Editor (Nokia PC Suite)
VOB[17][18] | 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[19] | 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[20] | 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
WAV | Sound format (Microsoft Windows RIFF WAVE)  | Media Player
WEBM | Royalty-free video/audio container  | HTML5
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
WLMP  | Windows Live Moviemaker Project, contains paths from where the images/audios/videos of the project are located  | Windows Live Movie Maker[21]
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
WTX | Text document  |

## 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  |
XLS[22] | 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[23] | 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[24][25] | XML schema description  |
XSF | data  | Microsoft InfoPath file
XSL[26] | XSL Stylesheet  |
XSLT[26] | 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[27] | YML markup file  | domain specific language output to XML
YAML[28] | YAML source file  | YAML (data serialization language)

## Z

Ext. | Description | Used by

|
|

ZIP[29] | Zip (file format) | PKZip – WinZip – Mac OS X
ZRX | REXX scripting language for ZOC | ZOC terminal emulator
ZS | Script for Minecraft mod MineTweaker[30] and CraftTweaker[31] | Minecraft Mods

## 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. http://publications.gc.ca/pub?id=9.613373&sl=0.
2. ↑ 2.0 2.1 "Syntax". https://sass-lang.com/documentation/syntax.
3. ↑ "SQL Server Compact and LINQ to SQL". https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/sql/linq/sql-server-compact-and-linq-to-sql.
4. ↑ "Overview of JPEG". https://jpeg.org/jpeg/.
5. ↑ 5.0 5.1 "Alignment Fileformats". 22 May 2019. http://www.jalview.org/help/html/io/fileformats.html.
6. ↑ "SWF File Format Specification Version 10". https://www.adobe.com/content/dam/Adobe/en/devnet/swf/pdf/swf_file_format_spec_v10.pdf.
7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 "GNU tar 1.32: 8.1 Using Less Space through Compression". 2019-02-23. https://www.gnu.org/software/tar/manual/html_chapter/Formats.html#Compression.
8. ↑ "COM, DCOM, and Type Libraries". Microsoft. 2020-05-31. https://docs.microsoft.com/en-us/windows/win32/midl/com-dcom-and-type-libraries.
9. ↑ "What are temporary (.TMP) files and how do I delete them?". https://fileinfo.com/help/temporary_files.
10. ↑ "BEP-0003: The BitTorrent Protocol Specification". http://www.bittorrent.org/beps/bep_0003.html. Retrieved 2009-10-22.
11. ↑ "TypeScript Documentation: The Basics". https://www.typescriptlang.org/docs/handbook/2/basic-types.html.
12. ↑ "Definition of tab-separated-values (tsv)". Internet Assigned Numbers Authority (IANA). https://www.iana.org/assignments/media-types/text/tab-separated-values.
13. ↑ "V64 File - What is a .v64 file and how do I open it?". https://fileinfo.com/extension/v64.
14. ↑ "Oracle VM VirtualBox User Manual, Chapter 10. Technical background". Oracle Corporation. https://www.virtualbox.org/manual/ch10.html.
15. ↑ "Oracle VM VirtualBox User Manual, Chapter 1.5. Installing VirtualBox and extension packs". Oracle Corporation. https://www.virtualbox.org/manual/ch01.html.
16. ↑ "Virtual Disk Format 5.0". VMware. December 20, 2011. https://www.vmware.com/support/developer/vddk/vmdk_50_technote.pdf.
17. ↑ DVD FLLC (2009-02) DVD Book Construction – list of all available DVD Books, Retrieved on 2009-07-24
18. ↑ DVD FLLC DVD Format Book – History of Supplements for DVD Books, Retrieved on 2009-07-24
19. ↑ "Introduction to the Visio file format (.vsdx)". Microsoft. 2015-03-09. https://docs.microsoft.com/en-us/office/client-developer/visio/introduction-to-the-visio-file-formatvsdx.
20. ↑ "Valve Texture Format". https://developer.valvesoftware.com/wiki/Valve_Texture_Format. Retrieved 2022-09-07.
21. ↑ "WLMP File Extension – What is a .wlmp file and how do I open it?". https://fileinfo.com/extension/wlmp.
22. ↑ "[MS-XLS: Excel Binary File Format (.xls) Structure"]. Microsoft. 2020-10-15. https://docs.microsoft.com/en-us/openspecs/office_file_formats/ms-xls/cd03cb5f-ca02-4934-a391-bb674cb8aa06.
23. ↑ "Excel (.xlsx) Extensions to the Office Open XML SpreadsheetML File Format". 2020-02-19. https://docs.microsoft.com/en-us/openspecs/office_standards/ms-xlsx/2c5dee00-eff2-4b22-92b6-0738acd4475e.
24. ↑ "W3C XML Schema Definition Language (XSD) 1.1 Part 1: Structures". 2012-04-05. http://www.w3.org/TR/xmlschema11-1/.
25. ↑ "W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes". 2012-04-05. http://www.w3.org/TR/xmlschema11-2/.
26. ↑ 26.0 26.1 "The Extensible Stylesheet Language Family (XSL)". 2017-09-09. https://www.w3.org/Style/XSL/.
27. ↑ "YML – Why a Markup Language?!". 2019-11-02. https://fdik.org/yml/.
28. ↑ "YAML Ain't Markup Language (YAML) Version 1.2". https://yaml.org/spec/1.2/spec.html. Retrieved 2019-05-29.
29. ↑ "ISO/IEC 21320-1:2015 Document Container File -- Part 1: Core". ITTF. 2015. http://www.iso.org/iso/catalogue_detail.htm?csnumber=60101.
30. ↑ Hebben, Stan. "Tutorial:Introduction". http://minetweaker3.powerofbytes.com/wiki/Tutorial:Introduction#Scripts. Retrieved 28 September 2014.
31. ↑ "Crafttweaker Documentation". https://crafttweaker.readthedocs.io/en/latest/.

## External links

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

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