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.
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X3D (Extensible 3D Graphics) is an open, royalty-free ISO standard for defining 3D computer graphics. It is the successor to VRML (Vir…
The .x64 file extension is a specialized format typically used to identify binary files, drivers, or executable components specificall…
Extensible Application Markup Language (XAML) is a declarative XML-based language developed by Microsoft that is used for initializing…
XAPK is a file format used to distribute Android applications, especially those that are large or require additional resources beyond…
The XER file format is a proprietary file format used by Oracle Primavera P6, a high-performance project management software suite. It…
XHTML (eXtensible HyperText Markup Language) is a markup language that is a reformulation of HTML 4 as an XML application. This means…
A XIB file is an XML-based file format used by Apple's Interface Builder, which is integrated into the Xcode development environment…
The XLSB file extension represents the Excel Binary Workbook format, which is a specialized spreadsheet format developed by Microsoft…
The XLSM file extension represents a Microsoft Excel Macro-Enabled Workbook. Introduced with the release of Microsoft Office 2007, it…
The XLSX file format is the default spreadsheet format used by Microsoft Excel, starting with Excel 2007. It's based on the Open XML s…
An XLTM file is a macro-enabled template created by Microsoft Excel, the industry-standard spreadsheet application. Introduced with th…
The XLTX file extension represents a Microsoft Excel Template file that was introduced with the release of Microsoft Office 2007. It i…
The XMind file format is a proprietary file format developed by XMind Ltd. specifically for their mind mapping and brainstorming softw…
An XMind Template file, identified by the .xmind-template extension, is a specialized document format used by XMind, a popular mind ma…
The 'maven' file, commonly referred to as the pom.xml (Project Object Model) file, is the fundamental unit of work in the Apache Maven…
The XMT file extension is primarily associated with the Parasolid geometric modeling kernel, a world-leading 3D solid modeling engine…
An XPI file is a compressed archive used by Mozilla-based applications like Firefox, Thunderbird, and SeaMonkey to distribute and inst…
The XPT file format, also known as the SAS Transport file format, is a platform-independent data format developed by the SAS Institute…
XSL (Extensible Stylesheet Language) is a family of languages used for transforming and formatting XML (Extensible Markup Language) do…
XSLT (Extensible Stylesheet Language Transformations) is a language for transforming XML documents into other XML documents, or other…
XSPF (XML Shareable Playlist Format) is an XML-based playlist format designed for sharing and exchanging playlists between different m…
XML (Extensible Markup Language) is a markup language designed for encoding documents in a format that is both human-readable and mach…
The .x_b file extension represents a binary file format used by the Parasolid geometric modeling kernel. Parasolid is a widely used so…
The .x_t file extension is associated with Parasolid, a geometric modeling kernel. These files contain 3D solid model data in a text-b…
X3D (Extensible 3D Graphics) is an open, royalty-free ISO standard for defining 3D computer graphics. It is the successor to VRML (Virtual Reality Modeling Lan…
The .x64 file extension is a specialized format typically used to identify binary files, drivers, or executable components specifically compiled for the x86-64…
Extensible Application Markup Language (XAML) is a declarative XML-based language developed by Microsoft that is used for initializing structured values and ob…
XAPK is a file format used to distribute Android applications, especially those that are large or require additional resources beyond what a standard APK file…
The XER file format is a proprietary file format used by Oracle Primavera P6, a high-performance project management software suite. It is primarily used for ex…
XHTML (eXtensible HyperText Markup Language) is a markup language that is a reformulation of HTML 4 as an XML application. This means that XHTML documents must…
A XIB file is an XML-based file format used by Apple's Interface Builder, which is integrated into the Xcode development environment, to design user interfaces…
The XLSB file extension represents the Excel Binary Workbook format, which is a specialized spreadsheet format developed by Microsoft as part of the Office sui…
The XLSM file extension represents a Microsoft Excel Macro-Enabled Workbook. Introduced with the release of Microsoft Office 2007, it is part of the Office Ope…
The XLSX file format is the default spreadsheet format used by Microsoft Excel, starting with Excel 2007. It's based on the Open XML standard, which uses a com…
An XLTM file is a macro-enabled template created by Microsoft Excel, the industry-standard spreadsheet application. Introduced with the Office Open XML (OOXML)…
The XLTX file extension represents a Microsoft Excel Template file that was introduced with the release of Microsoft Office 2007. It is based on the Office Ope…
The XMind file format is a proprietary file format developed by XMind Ltd. specifically for their mind mapping and brainstorming software. Structurally, an .xm…
An XMind Template file, identified by the .xmind-template extension, is a specialized document format used by XMind, a popular mind mapping and brainstorming s…
The 'maven' file, commonly referred to as the pom.xml (Project Object Model) file, is the fundamental unit of work in the Apache Maven build automation tool. I…
The XMT file extension is primarily associated with the Parasolid geometric modeling kernel, a world-leading 3D solid modeling engine developed by Siemens Digi…
An XPI file is a compressed archive used by Mozilla-based applications like Firefox, Thunderbird, and SeaMonkey to distribute and install extensions, themes, a…
The XPT file format, also known as the SAS Transport file format, is a platform-independent data format developed by the SAS Institute. It was specifically des…
XSL (Extensible Stylesheet Language) is a family of languages used for transforming and formatting XML (Extensible Markup Language) documents. It\'s primarily…
XSLT (Extensible Stylesheet Language Transformations) is a language for transforming XML documents into other XML documents, or other formats such as HTML, pla…
XSPF (XML Shareable Playlist Format) is an XML-based playlist format designed for sharing and exchanging playlists between different media players and applicat…
XML (Extensible Markup Language) is a markup language designed for encoding documents in a format that is both human-readable and machine-readable. It defines…
The .x_b file extension represents a binary file format used by the Parasolid geometric modeling kernel. Parasolid is a widely used solid modeling kernel devel…
The .x_t file extension is associated with Parasolid, a geometric modeling kernel. These files contain 3D solid model data in a text-based format. They are com…
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