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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The USDZ file format is a zipped and uncompressed archive format developed by Pixar and Apple for storing 3D models and scenes. It is…
A .NET Assembly file, typically with the extension '.dll' (Dynamic Link Library) or '.exe' (Executable), is a compiled unit of code wr…
The ODS file extension represents a spreadsheet document format used by OpenOffice and LibreOffice, both open-source office suites. It…
A .pkg file is a package installer used on macOS. It's essentially an archive containing the files and instructions needed to install…
The PLY file format, also known as the Polygon File Format or Stanford Triangle Format, is a computer file format designed to store th…
The .hbs file extension is associated with Handlebars templates. Handlebars is a popular templating engine used primarily in web devel…
A .SLDPRT file is a 3D part file created by SolidWorks, a popular CAD (Computer-Aided Design) software used for designing and engineer…
Windows Media Audio Lossless (WMA Lossless) is an audio codec developed by Microsoft. It's designed for lossless audio compression, me…
AVIF (AV1 Image File Format) is a modern image format that leverages the AV1 video codec for superior compression and image quality co…
A CSS (Cascading Style Sheet) file is a text document that contains style rules for controlling the presentation of HTML or XML docume…
Encapsulated PostScript (EPS) is a vector graphics file format frequently used for storing illustrations, logos, and other artwork. It…
RAF files are RAW image files created by Fujifilm digital cameras. RAW image files contain minimally processed data from the camera's…
The .accdb file extension is the default file format for databases created with Microsoft Access, a relational database management sys…
The MSI file extension represents a Windows Installer package. It's a database file format used by the Windows Installer service for i…
The Executable and Linkable Format (ELF) is a common standard file format for executables, object code, shared libraries, and core dum…
A DBF file is a database file format commonly associated with dBase, FoxPro, Clipper, and similar database management systems. It stor…
A 'tar.bz2' file is a compressed archive format commonly used in Unix-like operating systems. It combines the functionalities of two s…
The 3MF (3D Manufacturing Format) file format is an open-source file format specifically designed for 3D printing. It aims to provide…
The OTF (OpenType Font) file format is a widely used standard for digital fonts, developed jointly by Microsoft and Adobe. It's an ext…
A .pyo file is a compiled version of a Python source code file (.py). It's created when Python is run with the `-O` or `-OO` optimizat…
MP4 (MPEG-4 Part 14) is a digital multimedia container format most commonly used to store video and audio, but it can also be used to…
A .pyc file is a compiled bytecode file created by the Python interpreter. When a Python script (.py file) is executed, the interprete…
JSP (JavaServer Pages) is a technology that allows developers to create dynamic web pages based on HTML, XML, or other document types…
The MOBI file format is a proprietary ebook format developed by Mobipocket, based on the Open eBook standard. It was initially designe…
The USDZ file format is a zipped and uncompressed archive format developed by Pixar and Apple for storing 3D models and scenes. It is designed for efficient sh…
A .NET Assembly file, typically with the extension '.dll' (Dynamic Link Library) or '.exe' (Executable), is a compiled unit of code written in a .NET language…
The ODS file extension represents a spreadsheet document format used by OpenOffice and LibreOffice, both open-source office suites. It's part of the Open Docum…
A .pkg file is a package installer used on macOS. It's essentially an archive containing the files and instructions needed to install software, fonts, drivers…
The PLY file format, also known as the Polygon File Format or Stanford Triangle Format, is a computer file format designed to store three-dimensional data, mos…
The .hbs file extension is associated with Handlebars templates. Handlebars is a popular templating engine used primarily in web development. It allows develop…
A .SLDPRT file is a 3D part file created by SolidWorks, a popular CAD (Computer-Aided Design) software used for designing and engineering mechanical parts and…
Windows Media Audio Lossless (WMA Lossless) is an audio codec developed by Microsoft. It's designed for lossless audio compression, meaning it compresses audio…
AVIF (AV1 Image File Format) is a modern image format that leverages the AV1 video codec for superior compression and image quality compared to older formats l…
A CSS (Cascading Style Sheet) file is a text document that contains style rules for controlling the presentation of HTML or XML documents. It defines how eleme…
Encapsulated PostScript (EPS) is a vector graphics file format frequently used for storing illustrations, logos, and other artwork. It's essentially a self-con…
RAF files are RAW image files created by Fujifilm digital cameras. RAW image files contain minimally processed data from the camera's sensor, preserving as muc…
The .accdb file extension is the default file format for databases created with Microsoft Access, a relational database management system (RDBMS) from Microsof…
The MSI file extension represents a Windows Installer package. It's a database file format used by the Windows Installer service for installing, maintaining, a…
The Executable and Linkable Format (ELF) is a common standard file format for executables, object code, shared libraries, and core dumps. It is used on many Un…
A DBF file is a database file format commonly associated with dBase, FoxPro, Clipper, and similar database management systems. It stores structured data in a t…
A 'tar.bz2' file is a compressed archive format commonly used in Unix-like operating systems. It combines the functionalities of two separate utilities: 'tar'…
The 3MF (3D Manufacturing Format) file format is an open-source file format specifically designed for 3D printing. It aims to provide a complete and unambiguou…
The OTF (OpenType Font) file format is a widely used standard for digital fonts, developed jointly by Microsoft and Adobe. It's an extension of the TrueType fo…
A .pyo file is a compiled version of a Python source code file (.py). It's created when Python is run with the `-O` or `-OO` optimization flags. These flags in…
MP4 (MPEG-4 Part 14) is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store subtitles and image…
A .pyc file is a compiled bytecode file created by the Python interpreter. When a Python script (.py file) is executed, the interpreter first compiles it into…
JSP (JavaServer Pages) is a technology that allows developers to create dynamic web pages based on HTML, XML, or other document types. JSP pages contain standa…
The MOBI file format is a proprietary ebook format developed by Mobipocket, based on the Open eBook standard. It was initially designed for mobile devices with…
Everything you need to know about file extensions