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.
Refine your search with categories and letters
GeoJSON is a widely used open standard geospatial data interchange format that represents geographic features with their non-spatial a…
A .crdownload file is a temporary file extension used by the Google Chrome web browser (and Chromium-based browsers like Microsoft Edg…
JT (Jupiter Tessellation) is an ISO standard (ISO 14306:2017) file format for lightweight 3D data visualization and product lifecycle…
The VDX file format is an XML-based drawing file format used by older versions of Microsoft Visio (specifically Visio 2002, 2003, and…
XML (Extensible Markup Language) is a markup language designed for encoding documents in a format that is both human-readable and mach…
The .3ds file extension is a file format associated with the original Autodesk 3D Studio DOS program (later replaced by 3D Studio Max)…
A .tmp file is a generic temporary file created by various programs and operating systems. These files are used to hold data temporari…
The .ttf file extension represents a TrueType Font file. TrueType is a font standard developed by Apple and Microsoft in the late 1980…
The .bil file extension represents a Band Interleaved by Line raster image file. This format is commonly used in remote sensing and ge…
A PLT file is a vector graphics file format primarily associated with Hewlett-Packard Graphics Language (HPGL). HPGL is a printer cont…
Apache Parquet is a columnar storage format optimized for use with big data processing frameworks. Unlike row-oriented formats, Parque…
The .sqlite3 file extension is commonly used for SQLite database files. SQLite is a self-contained, serverless, zero-configuration, tr…
A BREP file, short for Boundary Representation file, is a 3D CAD (Computer-Aided Design) file format that stores the geometric and top…
The VHDX file extension represents a Virtual Hard Disk v2 file format. This format is used by Microsoft's Hyper-V virtualization platf…
Parasolid files (.x_t for text format and .x_b for binary format) are CAD (Computer-Aided Design) files used for storing 3D solid mode…
The BIN/CUE file format is a disc image format commonly used for creating exact copies of CDs and DVDs. The BIN file contains the raw…
A .SYS file is a system file used by Microsoft Windows and other operating systems. These files typically contain device drivers, hard…
TOML is a configuration file format that is easy to read due to its simple syntax. It is designed to be easily parsed into data struct…
A VDI file is a Virtual Disk Image file format used by Oracle's VirtualBox virtualization software. It contains the entire contents of…
reStructuredText (RST, ReST, or reST) is a plain text markup syntax similar to Markdown. It is primarily used for technical documentat…
The 3DM file format is a file extension used by Rhinoceros 3D, a popular NURBS (Non-Uniform Rational B-Splines) modeling software. It…
A .prt file is a part file created by Siemens NX (formerly Unigraphics NX), a professional CAD/CAM/CAE software suite. It contains 3D…
The ACIS (.sat, .sab) file format is a geometric modeling kernel developed by Spatial Corporation (now part of Dassault Systèmes). It…
A .properties file is a plain text file used to store configuration information for Java applications. It typically contains key-value…
GeoJSON is a widely used open standard geospatial data interchange format that represents geographic features with their non-spatial attributes. It's based on…
A .crdownload file is a temporary file extension used by the Google Chrome web browser (and Chromium-based browsers like Microsoft Edge, Brave, and Opera) to i…
JT (Jupiter Tessellation) is an ISO standard (ISO 14306:2017) file format for lightweight 3D data visualization and product lifecycle management (PLM). It's de…
The VDX file format is an XML-based drawing file format used by older versions of Microsoft Visio (specifically Visio 2002, 2003, and 2007). It stores vector g…
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 .3ds file extension is a file format associated with the original Autodesk 3D Studio DOS program (later replaced by 3D Studio Max). It's a binary file form…
A .tmp file is a generic temporary file created by various programs and operating systems. These files are used to hold data temporarily while a file is being…
The .ttf file extension represents a TrueType Font file. TrueType is a font standard developed by Apple and Microsoft in the late 1980s as a competitor to Adob…
The .bil file extension represents a Band Interleaved by Line raster image file. This format is commonly used in remote sensing and geographic information syst…
A PLT file is a vector graphics file format primarily associated with Hewlett-Packard Graphics Language (HPGL). HPGL is a printer control language used by pen…
Apache Parquet is a columnar storage format optimized for use with big data processing frameworks. Unlike row-oriented formats, Parquet stores data by columns…
The .sqlite3 file extension is commonly used for SQLite database files. SQLite is a self-contained, serverless, zero-configuration, transactional SQL database…
A BREP file, short for Boundary Representation file, is a 3D CAD (Computer-Aided Design) file format that stores the geometric and topological information of a…
The VHDX file extension represents a Virtual Hard Disk v2 file format. This format is used by Microsoft's Hyper-V virtualization platform to store the contents…
Parasolid files (.x_t for text format and .x_b for binary format) are CAD (Computer-Aided Design) files used for storing 3D solid models. They are the native f…
The BIN/CUE file format is a disc image format commonly used for creating exact copies of CDs and DVDs. The BIN file contains the raw binary data of the disc…
A .SYS file is a system file used by Microsoft Windows and other operating systems. These files typically contain device drivers, hardware configurations, or c…
TOML is a configuration file format that is easy to read due to its simple syntax. It is designed to be easily parsed into data structures. TOML aims to be min…
A VDI file is a Virtual Disk Image file format used by Oracle's VirtualBox virtualization software. It contains the entire contents of a virtual hard disk, inc…
reStructuredText (RST, ReST, or reST) is a plain text markup syntax similar to Markdown. It is primarily used for technical documentation, software documentati…
The 3DM file format is a file extension used by Rhinoceros 3D, a popular NURBS (Non-Uniform Rational B-Splines) modeling software. It is the native file format…
A .prt file is a part file created by Siemens NX (formerly Unigraphics NX), a professional CAD/CAM/CAE software suite. It contains 3D model data representing a…
The ACIS (.sat, .sab) file format is a geometric modeling kernel developed by Spatial Corporation (now part of Dassault Systèmes). It's a widely used format f…
A .properties file is a plain text file used to store configuration information for Java applications. It typically contains key-value pairs, where the keys re…
Everything you need to know about file extensions