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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TRN files are typically associated with training data used in machine learning and artificial intelligence applications. These files c…
The ARFF (Attribute-Relation File Format) is a text file format developed by the Machine Learning Group at the University of Waikato f…
DjVu (pronounced "déjà vu") is a file format primarily designed for storing scanned documents, especially those containing text, phot…
The SMI (Synchronized Multimedia Integration Language) file format, often seen with the extension .smi or .sami, is a text-based marku…
The ASCII Grid file format (.asc) is a plain text raster data format commonly used for representing spatial data, particularly elevati…
A .sldprt file is a 3D CAD (Computer-Aided Design) part file created by SolidWorks, a popular solid modeling software application deve…
A .GRD file is a grid data file format primarily associated with Golden Software's Surfer software. Surfer is a powerful contouring, g…
3D XML (3D eXtensible Markup Language) is a proprietary XML-based CAD file format developed by Dassault Systèmes. It is primarily use…
GeoPackage is an open, standards-based, platform-independent, portable, self-describing, and compact format for transferring geospatia…
MessagePack is a binary serialization format. It is used for efficient data interchange between different programming languages and sy…
A memory dump file (.dump) is a snapshot of the memory of a computer system or a specific process at a particular point in time. It co…
The IGES (Initial Graphics Exchange Specification) file format, identified by the .igs extension, is a vendor-neutral file format desi…
A .sql file is a plain text file containing SQL (Structured Query Language) code. SQL is a standard programming language used for mana…
TopoJSON is an extension of GeoJSON that encodes topology. Rather than representing geometries as independent sets of coordinates, Top…
A VSDM file is a drawing created by Microsoft Visio, a diagramming and vector graphics application. It's similar to a VSDX file, but i…
The WebVTT (Web Video Text Tracks) file format is a text-based format used for displaying timed text tracks, such as subtitles, captio…
The FXP file extension is primarily associated with compiled report files generated by FastReport, a popular reporting tool often used…
The Parasolid file format (.x_t, .x_b, .xmt_txt, .xmt_bin) is a geometric modeling kernel format widely used in CAD/CAM/CAE software…
A stackdump file is a memory dump file generated by software applications, operating systems, or hardware devices when they encounter…
Well-known Text (WKT) is a text markup language for representing vector geometry objects. It's a human-readable text format that allow…
The FDX file format is the native file format for Final Draft, a popular screenwriting software used extensively in the film and telev…
The .mot file extension represents a Motorola S-Record file. This is a text-based file format used to represent binary data, primarily…
The .wpd file extension is primarily associated with WordPerfect, a word processing application developed by Corel. This format is use…
A 'config' file is a generic file extension used to store configuration settings for various software applications. These files typica…
TRN files are typically associated with training data used in machine learning and artificial intelligence applications. These files contain datasets used to t…
The ARFF (Attribute-Relation File Format) is a text file format developed by the Machine Learning Group at the University of Waikato for describing datasets us…
DjVu (pronounced "déjà vu") is a file format primarily designed for storing scanned documents, especially those containing text, photographs, and line art. It…
The SMI (Synchronized Multimedia Integration Language) file format, often seen with the extension .smi or .sami, is a text-based markup language used to add su…
The ASCII Grid file format (.asc) is a plain text raster data format commonly used for representing spatial data, particularly elevation models, terrain data…
A .sldprt file is a 3D CAD (Computer-Aided Design) part file created by SolidWorks, a popular solid modeling software application developed by Dassault Systèm…
A .GRD file is a grid data file format primarily associated with Golden Software's Surfer software. Surfer is a powerful contouring, gridding, and surface mapp…
3D XML (3D eXtensible Markup Language) is a proprietary XML-based CAD file format developed by Dassault Systèmes. It is primarily used for lightweight represe…
GeoPackage is an open, standards-based, platform-independent, portable, self-describing, and compact format for transferring geospatial information. It is defi…
MessagePack is a binary serialization format. It is used for efficient data interchange between different programming languages and systems. Unlike human-reada…
A memory dump file (.dump) is a snapshot of the memory of a computer system or a specific process at a particular point in time. It contains the raw data store…
The IGES (Initial Graphics Exchange Specification) file format, identified by the .igs extension, is a vendor-neutral file format designed for transferring 2D…
A .sql file is a plain text file containing SQL (Structured Query Language) code. SQL is a standard programming language used for managing and manipulating dat…
TopoJSON is an extension of GeoJSON that encodes topology. Rather than representing geometries as independent sets of coordinates, TopoJSON geometries are stit…
A VSDM file is a drawing created by Microsoft Visio, a diagramming and vector graphics application. It's similar to a VSDX file, but it contains macros. Macros…
The WebVTT (Web Video Text Tracks) file format is a text-based format used for displaying timed text tracks, such as subtitles, captions, descriptions, chapter…
The FXP file extension is primarily associated with compiled report files generated by FastReport, a popular reporting tool often used in conjunction with vari…
The Parasolid file format (.x_t, .x_b, .xmt_txt, .xmt_bin) is a geometric modeling kernel format widely used in CAD/CAM/CAE software. It's a proprietary format…
A stackdump file is a memory dump file generated by software applications, operating systems, or hardware devices when they encounter a critical error, crash…
Well-known Text (WKT) is a text markup language for representing vector geometry objects. It's a human-readable text format that allows for the representation…
The FDX file format is the native file format for Final Draft, a popular screenwriting software used extensively in the film and television industry. It's spec…
The .mot file extension represents a Motorola S-Record file. This is a text-based file format used to represent binary data, primarily for programming microcon…
The .wpd file extension is primarily associated with WordPerfect, a word processing application developed by Corel. This format is used to store documents crea…
A 'config' file is a generic file extension used to store configuration settings for various software applications. These files typically contain parameters, s…
Everything you need to know about file extensions