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File Extensions

File extension is suffix added to filename like ".txt" or ".jpg." It tells computers what type of file it is (text, image etc.) and which software should be used for opening it. File extensions help with format recognition, associating software, displaying icons and sorting files. Here we list before you popular file extensions for files downloaded from TPB and complete list of 175 file extensions that you should know.

Popular Pirate Bay File Extensions

Video Files:

  1. mp4: MPEG-4 Part 14 files are multimedia container formats that can store video, audio, subtitles and images. They are widely used for streaming and distributing video content because of their efficient compression and compatibility across devices.
  2. .mkv: Matroska Video files are versatile container formats that can hold various types of multimedia data including video, audio and subtitles. They are known for their ability for housing high quality content while maintaining small file sizes.
  3. .avi: Audio Video Interleave files are legacy multimedia container format developed by Microsoft. They can contain both audio and video data and are often used for storing videos that use older compression codecs.
  4. .mov: QuickTime Movie files were developed by Apple and are commonly used for video playback on macOS and iOS devices. MOV files can contain video, audio and other media streams making them suitable for multimedia presentations.
  5. .wmv: Windows Media Video files were created by Microsoft and are designed for efficient video compression and playback on Windows platforms. They support both streaming and downloadable video content.
  6. .flv: Flash Video files were originally developed by Adobe (formerly Macromedia) and are commonly used for streaming video content over internet. They were widely used in web based video players and online video platforms.
  7. .webm: WebM files are open web media container formats developed for HTML5 video. They provide efficient video compression and support for VP9 and VP8 video codecs making them suitable for web streaming.
  8. .mpg / .mpeg: MPEG (Moving Picture Experts Group) video files encompass range of formats optimized for various use cases. MPEG-1 and MPEG-2 are commonly used for video CDs and DVDs while MPEG-4 offers more efficient compression for digital video distribution.
  9. .3gp / .3g2: 3GPP and 3GPP2 files are multimedia container formats used primarily for mobile phones and video messaging. They support audio, video and text content.

Image Files:

  1. .jpg / .jpeg: Joint Photographic Experts Group files also known as JPEGs use lossy compression for reducing file sizes while maintaining acceptable image quality. They are most widely used image format for photographs and graphics on internet.
  2. .png: Portable Network Graphics files use lossless compression for preserving image quality without significant increase in file size. They are commonly used for images with transparent backgrounds, logos and graphics.
  3. .gif: Graphics Interchange Format files support animation and can contain multiple frames within single file. They are often used for simple animations, icons and internet memes.
  4. .bmp: Bitmap image files store pixel data in uncompressed format resulting in high quality images but larger file sizes compared to compressed formats. They are commonly used for images that require no loss of detail.
  5. .tiff / .tif: Tagged Image File Format files are known for their flexibility and ability for storing high quality images with multiple layers and channels. They are commonly used in professional graphics and photography.
  6. .svg: Scalable Vector Graphics files use XML based markup for describing 2D vector graphics. They are resolution independent and can be scaled without loss of quality making them suitable for logos and illustrations.
  7. .ico: Icon files are used for storing small images that represent files, folders or applications. They often contain multiple image sizes for accommodating different display resolutions.
  8. .psd: Adobe Photoshop Document files are proprietary formats that preserve layers, effects and other design elements. They are used with Adobe Photoshop for advanced image editing and graphic design.
  9. .exr: OpenEXR files are high dynamic range image files commonly used in visual effects and animation. They retain wide range of color and light information.

Audio Files:

  1. .mp3: MPEG Audio Layer III files use lossy compression for significantly reducing audio file sizes while maintaining acceptable sound quality. They are most common format for music and audio playback on various devices.
  2. .flac: Free Lossless Audio Codec files provide high quality audio compression without any loss of data. They are popular among audiophiles and music producers who prioritize audio fidelity.
  3. .wav: Waveform Audio File Format files store audio data in uncompressed format ensuring highest audio quality. They are commonly used in professional audio production and recording.
  4. .aac: Advanced Audio Coding files offer improved audio compression over MP3 while maintaining good sound quality. They are commonly used for streaming and digital music distribution.
  5. .ogg: Ogg Vorbis files use open source audio compression format that provides high quality sound at lower bitrates compared with other formats. They are commonly used for internet radio and streaming.
  6. .wma: Windows Media Audio files are developed by Microsoft for audio playback on Windows platforms. They offer various levels of compression and are commonly used for music and audio streaming.
  7. .m4a: MPEG-4 Audio files are commonly associated with Apple's iTunes and iOS devices. They can contain audio streams encoded using various codecs including AAC and ALAC (Apple Lossless).
  8. .mid / .midi: MIDI (Musical Instrument Digital Interface) files contain musical data such as notes, timings and instrument information. They are used for creating and sharing music compositions and arrangements.
  9. .opus: Opus files are known for their low latency audio compression and support for both speech and music. They are suitable for real time communication and streaming.

Document Files:

  1. .pdf: Portable Document Format files are widely used for presenting documents in consistent layout across different devices and platforms. They can contain text, images, interactive elements and even multimedia.
  2. .doc / .docx: Microsoft Word document files are used for word processing and document creation. DOCX is newer XML based format introduced with Microsoft Office 2007 supporting advanced features and compatibility.
  3. .ppt / .pptx: Microsoft PowerPoint presentation files contain slides with text, images, animations and multimedia. PPTX is newer format that allows for richer presentations.
  4. .xls / .xlsx: Microsoft Excel spreadsheet files are used for data organization, calculations and analysis. XLSX is newer format that supports more rows, columns and advanced formulas.
  5. .odt: OpenDocument Text files are created using open source office suites like LibreOffice and Apache OpenOffice. They provide open format for word processing documents.
  6. .ods: OpenDocument Spreadsheet files are used for creating spreadsheets in open source office suites. They offer compatibility with various spreadsheet software.
  7. .rtf: Rich Text Format files support text formatting, basic styling and images. They are widely supported by different word processors and text editors.
  8. .txt: Plain text files contain unformatted text and are used for storing and exchanging simple data or code.
  9. .docm / .xlsm / .pptm: These extensions indicate document formats that include macros allowing for automation and scripting within Microsoft Office files.

Archive Files:

  1. .zip: Compressed archive files use various compression algorithms for bundling multiple files and folders into single container. They are commonly used for file compression and distribution.
  2. .rar: Roshal Archive files offer high compression ratios and can split large archives into smaller volumes. They are suitable for compressing and distributing large files.
  3. .7z: 7-Zip Compressed Archive files use 7z compression format which provides high compression ratios and supports various compression methods.
  4. .tar: Tape Archive files bundle multiple files and directories into single archive without compression. They are often used in conjunction with other compression formats like gzip or bzip2.
  5. .gz: Gzip Compressed files use gzip compression algorithm for reducing file sizes. They are commonly used in Unix like operating systems for compressing individual files.
  6. .bz2: Bzip2 Compressed files use bzip2 compression algorithm which provides higher compression ratios than gzip. They are commonly used for compressing software distributions.
  7. .xz: XZ Compressed files use LZMA2 compression algorithm for achieving high compression ratios. They are known for excellent compression performance but may require more memory for decompression.
  8. .zipx: Variation of ZIP format that offers advanced compression methods like JPEG compression, enhanced encryption and improved compression algorithms.

Executable Files:

  1. .exe: Windows Executable files contain instructions that computer's operating system can execute. They are used for running applications, installing software and performing various tasks on Windows systems.
  2. .dmg: Apple Disk Image files are used for distributing software on macOS. They often contain application files that can be dragged and dropped into Applications folder.
  3. .apk: Android Package files are used for installing applications on Android devices. They contain necessary files and resources for app functioning.
  4. .sh: Shell script files contain series of commands that can be executed in shell or terminal. They are often used in Unix like operating systems for automating tasks.
  5. .app: macOS Application bundles are folders containing executable files, resources and metadata that define application. They are commonly used for packaging macOS applications.
  6. .jar: Java Archive files are used for packaging and distributing Java applications. They can contain compiled Java classes, resources and metadata.
  7. .bat / .cmd: Batch script files contain series of Windows batch commands that are executed sequentially. They are used for automating tasks on Windows systems.
  8. .msi: Microsoft Installer files are used for installing software on Windows systems. They contain installation instructions and resources needed for software to run properly.
  9. .deb: Debian Package files are used in Debian based Linux distributions for software installation and distribution. They contain application files and metadata for package management.

Other Files:

  1. .torrent: Torrent files contain metadata and instructions for downloading files from P2P networks like BitTorrent. They are used for initiating downloading process and share files.
  2. .iso: Disk image files contain exact copy of CD, DVD or Bluray disc. They are often used for creating bootable media or distributing software.
  3. .srt: SubRip subtitle files contain timed text that corresponds video or audio content. They are used for displaying subtitles during playback allowing viewers in understanding spoken language.
  4. .csv: Comma Separated Values files store tabular data with values separated by commas. They are commonly used for data storage and exchange between different applications.
  5. .xml: Extensible Markup Language files store structured data using customizable markup format. They are used for data exchange and configuration settings in various applications.
  6. .json: JavaScript Object Notation files store structured data in human readable format using key value pairs. They are commonly used for data interchange between web services and applications.
  7. .ps: PostScript files contain page description language instructions for printing and graphics. They are used for creating vector graphics and documents suitable for printing.
  8. .epub: Electronic Publication files are used for eBooks and digital publications. They can contain text, images, multimedia and formatting instructions for various devices.
  9. .gpx: GPS Exchange Format files store GPS and navigation data commonly used for sharing routes, tracks and waypoints between devices and applications.
  10. .kml / .kmz: Keyhole Markup Language files are used for geographic information and mapping data. They are commonly used with Google Earth and other mapping software.
  11. .ics: iCalendar files store calendar data, events and appointments. They are used for sharing scheduling information between different calendar applications.
  12. .torrent: Torrent files contain metadata about files shared and instructions for downloading those files using BitTorrent client. They are commonly used for P2P file sharing.

File Extensions: Complete List

  1. .3dm - Rhino 3D Model: File format used by Rhino software for creating 3D models.
  2. .7z - 7-Zip Archive: Archive format with high compression ratios, commonly used for large files.
  3. .accdb - Microsoft Access Database: Database file format used by Microsoft Access for storing data and tables.
  4. .ace - WinAce Archive: Archive format created using WinAce archiver.
  5. .ai - Adobe Illustrator Document: File format used by Adobe Illustrator for vector graphics.
  6. .apk - Android Package: Package file format used for distributing and installing apps on Android devices.
  7. .asp - Active Server Pages: Script file used for server side scripting in web development.
  8. .atom - Atom Syndication Format: XML based web feed format used for publishing frequently updated content.
  9. .avi - Audio Video Interleave: Multimedia container format that stores both video and audio data.
  10. .azw - Amazon Kindle eBook: File format used by Amazon Kindle devices for eBooks.
  11. .azw3 - Amazon Kindle eBook: Successor for AZW format used for Amazon Kindle eBooks.
  12. .azw4 - Amazon Print Replica eBook: Format used for replicating print layout of books on Kindle devices.
  13. .bak - Backup File: Backup copy of file or data for preventing loss because of data corruption or accidental deletion.
  14. .bash - Bash Script: Script file containing commands for Bash shell in Unix like operating systems.
  15. .bat - Batch File: Script file containing series of commands that can be executed by Windows command prompt.
  16. .bin - Binary File: File that contains data in binary format often used for storing executable code.
  17. .blend - Blender Project: File format used by Blender software for creating 3D models and animations.
  18. .bmp - Bitmap Image: Uncompressed image format that stores color data for each pixel in image.
  19. .bz2 - Bzip2 Compressed File: Compressed file created using the Bzip2 compression algorithm.
  20. .c - C Source Code File: Source code file written in C programming language.
  21. .cb7 - Comic Book Archive: Archive format used for packaging and distributing comic book files.
  22. .cbr - Comic Book Archive: Archive format used for packaging and distributing comic book files.
  23. .cbz - Comic Book Archive: Archive format used for packaging and distributing comic book files.
  24. .cdr - CorelDRAW Image: File format used by CorelDRAW for vector graphics and illustrations.
  25. .cfg - Configuration File: Similar file like .ini file used for storing configuration settings.
  26. .cgi - Common Gateway Interface Script: Script file used for running server side programs on web server.
  27. .conf - Configuration File: Text file containing settings and parameters for software or system configuration.
  28. .cpp - C++ Source Code File: Source code file written in C++ programming language.
  29. .cs - C# Source Code File: Source code file written in C# programming language.
  30. .css - Cascading Style Sheet: Stylesheet language used for describing presentation of document written in HTML or XML.
  31. .csv - Comma Separated Values: Text file format that stores tabular data with each value separated by comma.
  32. .cue - Cue Sheet: Text file that describes layout of tracks on optical disc.
  33. .dae - COLLADA Document: XML based 3D model format used for exchanging 3D content between different applications.
  34. .dbf - dBASE Database File: Database file format used for storing structured data in tabular format.
  35. .dbx - Outlook Express Mailbox: File format used by Outlook Express for storing email messages.
  36. .deb - Debian Package: Package file format used in Debian based Linux distributions for software installation.
  37. .djvu - DjVu Document: File format used for scanned documents and eBooks with high resolution images.
  38. .dll - Dynamic Link Library: Contains code and data used by multiple programs for avoiding redundancy and improve efficiency.
  39. .dmg - Apple Disk Image: Disk image format used by macOS for software distribution and system backups.
  40. .doc - Microsoft Word Document (Legacy): Previous version of Word document format used by Microsoft Word.
  41. .docx - Microsoft Word Document: Word processing document created using Microsoft Word.
  42. .dwg - AutoCAD Drawing: Proprietary format used by AutoCAD software for creating 2D and 3D designs.
  43. .dxf - AutoCAD Drawing Exchange Format: File format used for exchanging CAD drawings between different software applications.
  44. .ear - Enterprise Archive: Archive file format used for packaging enterprise Java applications.
  45. .eml - E-Mail Message: File format used for storing individual email messages.
  46. .emlx - Apple Mail Message: File format used by Apple Mail for storing email messages.
  47. .eps - Encapsulated PostScript: Graphic file format used for high resolution printing and sharing vector graphics.
  48. .epub - Electronic Publication: Standard eBook format used for various eReaders and devices.
  49. .exe - Executable File: Contains program or application that can be run by computer.
  50. .fb2 - FictionBook 2.0: XML based eBook format for fiction books and literature.
  51. .fbx - Autodesk FBX File: 3D model format used for exchanging 3D content between different software applications.
  52. .fcgi - FastCGI Script: Improved version of Common Gateway Interface (CGI) for better performance.
  53. .flac - Free Lossless Audio Codec: Audio format that preserves audio quality while still reducing file size.
  54. .gif - Graphics Interchange Format: Bitmap image format that supports animation and limited color palette.
  55. .gz - Gzip Compressed File: Compressed file created using Gzip compression algorithm.
  56. .h - C/C++ Header File: Header file containing declarations for functions and variables used in C and C++ programs.
  57. .hdf - Hierarchical Data Format: File format designed for storing and organizing large amounts of data.
  58. .htaccess - Apache Configuration File: Configuration file used by Apache web server for control server behavior.
  59. .htm - HyperText Markup Language: Previous version of HTML used for create web pages and documents.
  60. .html - HyperText Markup Language: Markup language used for creating web pages and documents for World Wide Web.
  61. .htpasswd - Apache Password File: File used for storing usernames and password hashes for HTTP authentication.
  62. .iba - Apple iBooks Author Document: File format used by Apple iBooks Author for creating interactive eBooks.
  63. .ical - iCalendar File: File format used for storing calendar information, events and appointments.
  64. .ico - Icon Image: Image format used for icons in applications and on websites.
  65. .ics - iCalendar File: File format used for storing calendar information, events and appointments.
  66. .igs - IGES File: Initial Graphics Exchange Specification format used for exchanging 2D and 3D design data.
  67. .img - Disk Image: General term for file that contains complete structure and contents of disk.
  68. .indd - Adobe InDesign Document: File format used by Adobe InDesign for desktop publishing projects.
  69. .inf - Information File: Plain text file used for storing various types of information.
  70. .ini - Initialization File: Configuration file format used for storing settings for various applications.
  71. .iso - ISO Image: Disk image format that stores contents of optical disc such as CD or DVD.
  72. .jar - Java Archive: Archive file format used for packaging Java classes and resources for distribution.
  73. .java - Java Source Code File: Source code file written in Java programming language.
  74. .jpg - JPEG Image: Compressed image format commonly used for photographs and graphics.
  75. .js - JavaScript: Programming language commonly used for web development for adding interactivity and functionality for websites.
  76. .json - JavaScript Object Notation: Lightweight data interchange format often used for transmitting data between server and web application.
  77. .jsp - JavaServer Pages: Technology used for creating dynamic web pages based on Java.
  78. .jsx - JSX Script: Script file used with React for defining structure and appearance of user interface elements.
  79. .key - Apple Keynote Presentation: Presentation format used by Apple Keynote for creating slideshows.
  80. .less - Less Style Sheet: Stylesheet language that extends CSS with dynamic behavior such as variables and mixins.
  81. .lit - Microsoft eBook: File format used by Microsoft Reader for eBooks.
  82. .log - Log File: Contains records of events, actions or messages generated by software applications or systems.
  83. .max - Autodesk 3ds Max Scene: File format used by Autodesk 3ds Max for creating 3D models and scenes.
  84. .mbox - Mailbox File: File format used for storing collection of email messages in single file.
  85. .md - Markdown Document: Lightweight markup language used for creating formatted text using plain text.
  86. .mdb - Microsoft Access Database (Legacy): Previous version of Access database format used by older versions of Microsoft Access.
  87. .mdf - Media Disc Image File: Proprietary disk image format used by Alcohol 120% disk image management application.
  88. .mobi - Mobipocket eBook: File format used for eBooks and documents on eReaders.
  89. .mov - QuickTime Video: Multimedia container format developed by Apple used for video playback.
  90. .mp3 - MPEG Audio Layer III: Compressed audio file format that maintains good audio quality while reducing file size.
  91. .mp4 - MPEG-4 Video: Digital multimedia container format that can store video, audio and subtitles.
  92. .msg - Outlook Mail Message: File format used by Microsoft Outlook for storing email messages.
  93. .nab - Lotus Notes Address Book: File format used by Lotus Notes for storing contact information.
  94. .nrg - Nero Disc Image: Proprietary disk image format used by Nero Burning ROM.
  95. .numbers - Apple Numbers Spreadsheet: Spreadsheet format used by Apple Numbers for creating and managing data.
  96. .obj - Wavefront OBJ File: 3D model format that stores geometric data and material definitions.
  97. .odb - OpenDocument Database: Database format used by various database applications supporting OpenDocument standard.
  98. .odg - OpenDocument Drawing: Vector drawing format used by various graphics applications supporting OpenDocument standard.
  99. .odp - OpenDocument Presentation: Presentation format used by various presentation applications supporting OpenDocument standard.
  100. .ods - OpenDocument Spreadsheet: Spreadsheet format used by various spreadsheet applications supporting OpenDocument standard.
  101. .odt - OpenDocument Text: Document format used by various word processing applications that support OpenDocument standard.
  102. .ogg - Ogg Vorbis Audio: Audio file format that uses open royalty free compression for maintaining sound quality.
  103. .ost - Outlook Offline Data File: File format used by Microsoft Outlook for storing offline copies of email data.
  104. .pages - Apple Pages Document: Document format used by Apple Pages for word processing and page layout.
  105. .pdb - Palm Database: File format used by Palm OS devices for storing data such as contacts and notes.
  106. .pdf - Portable Document Format: Document format that preserves fonts, images and layout independent of software and hardware.
  107. .php - PHP Script: Script file written in PHP programming language for web development.
  108. .pl - Perl Script: Script file written in Perl programming language.
  109. .plist - Property List: File format used for storing configuration and preference data on macOS and iOS.
  110. .pmd - Adobe Pagemaker Document: File format used by Adobe Pagemaker for desktop publishing projects.
  111. .png - Portable Network Graphic: Image format that supports lossless data compression often used for images with transparent backgrounds.
  112. .ppt - Microsoft PowerPoint Presentation (Legacy): Previous version of PowerPoint presentation format used by Microsoft PowerPoint.
  113. .pptx - Microsoft PowerPoint Presentation: Presentation file created using Microsoft PowerPoint.
  114. .prc - Mobipocket eBook: File format used for eBooks and documents on eReaders.
  115. .properties - Properties File: File format used for storing configuration data as key value pairs.
  116. .ps - PostScript File: Page description language used for printing and graphics.
  117. .ps1 - Windows PowerShell Script: Script file used by Windows PowerShell for automating tasks and scripting.
  118. .psd - Adobe Photoshop Document: Native file format used by Adobe Photoshop for storing images with layers and effects.
  119. .pst - Personal Storage Table: File format used by Microsoft Outlook for storing emails, calendar items and more.
  120. .pub - Microsoft Publisher Document: Document format used by Microsoft Publisher for creating publications and designs.
  121. .pvm - Parallels Virtual Machine: Disk image format used by Parallels Desktop for Mac virtualization software.
  122. .py - Python Script: Script file written in Python programming language.
  123. .qxd - QuarkXPress Document: File format used by QuarkXPress for page layout and design.
  124. .rar - RAR Archive: Archive format that supports compression and spanning across multiple files.
  125. .rb - Ruby Script: Script file written in Ruby programming language.
  126. .rdf - Resource Description Framework: Standard for describing resources on web often used for metadata.
  127. .reg - Registry File: Contains data for modifying or configuring Windows Registry.
  128. .rpm - Red Hat Package Manager: Package file format used in Linux distributions for software installation.
  129. .rss - Rich Site Summary: XML based format used for distributing and syndicating web content such as news headlines and articles.
  130. .rtf - Rich Text Format: Document format that supports formatting and various text styles.
  131. .sass - Sass Stylesheet: Older version of Sass stylesheet language.
  132. .scss - Sass CSS Stylesheet: Stylesheet language that adds features like variables, nested rules and more to CSS.
  133. .sh - Shell Script: Script file containing commands for Unix based shell for executing.
  134. .skp - SketchUp Document: File format used by SketchUp software for creating 3D models.
  135. .sql - SQL Script: Script file containing Structured Query Language commands for working with databases.
  136. .step - STEP File: Standard for Exchange of Product model data used for 3D CAD interchange.
  137. .stl - Stereolithography File: 3D model format used for 3D printing and computer aided design (CAD).
  138. .svg - Scalable Vector Graphic: XML based vector image format that supports interactivity and animation.
  139. .tar - Tape Archive: Archive format used for bundling multiple files together often used in combination with compression formats.
  140. .tar.bz2 - Tarball Archive: Archive format that combines Tape Archive (tar) format with Bzip2 compression.
  141. .tar.gz - Tarball Archive: Archive format that combines Tape Archive (tar) format with Gzip compression.
  142. .tar.xz - Tarball Archive: Archive format that combines Tape Archive (tar) format with XZ compression.
  143. .tar.z - Tarball Archive: Archive format that combines Tape Archive (tar) format with Z compression.
  144. .tex - TeX Document: Markup language used for typesetting documents especially those containing mathematical formulas.
  145. .tif - Tagged Image File Format: Image format that supports lossless compression and is often used for high quality graphics.
  146. .toast - Toast Disc Image: Disk image format used by Roxio Toast for creating CDs and DVDs.
  147. .toml - TOML Document: Configuration file format designed for easy reading and writing by both humans and computers.
  148. .tsv - Tab Separated Values: Text file format that stores tabular data with each value separated by tab.
  149. .tsx - TypeScript JSX: Script file used with TypeScript and React for defining UI components.
  150. .txt - Text File: Contains plain text without any formatting.
  151. .vb - Visual Basic Source Code File: Source code file written in Visual Basic programming language.
  152. .vcd - Video CD: Format used for creating video discs that can be played on VCD players.
  153. .vcf - vCard File: File format used for storing contact information often used for sharing contacts.
  154. .vdi - VirtualBox Disk Image: Disk image format used by Oracle VirtualBox for virtual machines.
  155. .vmdk - VMware Virtual Disk: Disk image format used by VMware virtualization software for simulating physical disks.
  156. .vsd - Microsoft Visio Drawing: Diagram and vector graphics format used by Microsoft Visio.
  157. .war - Web Archive: Archive file format used for packaging Java web applications.
  158. .wav - Waveform Audio File Format: Uncompressed audio file format that stores audio data without loss of quality.
  159. .wml - Wireless Markup Language: Markup language used for creating content for wireless devices such as mobile phones.
  160. .wmv - Windows Media Video: Video format developed by Microsoft often used for streaming and video playback.
  161. .wpd - WordPerfect Document: Word processing document format used by Corel WordPerfect.
  162. .wrl - Virtual Reality Modeling Language: File format used for describing 3D interactive and multimedia content.
  163. .wsdl - Web Services Description Language: XML based language used for describing web services and their interfaces.
  164. .x3d - Extensible 3D Graphics: XML based file format used for 3D graphics on web.
  165. .xaml - Extensible Application Markup Language: Markup language used for designing user interfaces in Windows applications.
  166. .xhtml - Extensible HyperText Markup Language: HTML reformulated as XML combining strengths of both.
  167. .xls - Microsoft Excel Spreadsheet (Legacy): Previous version of Excel spreadsheet format used by Microsoft Excel.
  168. .xlsx - Microsoft Excel Spreadsheet: Spreadsheet file created using Microsoft Excel.
  169. .xml - Extensible Markup Language: Markup language that encodes documents in format that is both human readable and machine readable.
  170. .xsl - Extensible Stylesheet Language: Markup language used for transforming XML documents into other formats.
  171. .xz - XZ Compressed File: Compressed file created using XZ compression algorithm.
  172. .yaml - YAML Document: Human readable data serialization format used for configuration files and data exchange.
  173. .yml - YAML Document: Human readable data serialization format used for configuration files and data exchange.
  174. .z - Z Compressed File: Compressed file created using Unix compress utility.
  175. .zip - ZIP Archive: Compressed archive format used for storing multiple files and directories while reducing overall file size.