HTML (HyperText Markup Language) is the standard markup language for creating web pages. HTML5 is the latest major revis...
The ACIS (.sat, .sab) file format is a geometric modeling kernel developed by Spatial Corporation (now part of Dassault ...
A .hdmp file, also known as a Windows Heap Dump file, is a snapshot of the memory heap of a running process at a specifi...
The RVT file extension is associated with Autodesk Revit, a Building Information Modeling (BIM) software used extensivel...
A .dem file is a Digital Elevation Model (DEM) file, a raster-based geospatial data format used to represent terrain ele...
A '.partial' file extension typically indicates an incomplete or partially downloaded file. These files are created by d...
The .ttf file extension represents a TrueType Font file. TrueType is a font standard developed by Apple and Microsoft in...
The ARFF (Attribute-Relation File Format) is a text file format developed by the Machine Learning Group at the Universit...
A DDL (Data Definition Language) file contains commands used to define the structure of a database. These commands are p...
DWG (Drawing) is a proprietary binary file format used for storing two- and three-dimensional design data and metadata. ...
The .sqlite3 file extension is commonly used for SQLite database files. SQLite is a self-contained, serverless, zero-con...
MessagePack is a binary serialization format. It is used for efficient data interchange between different programming la...
The .drawio file format is used by draw.io (now diagrams.net), a free, open-source diagramming application. It stores di...
AsciiDoc is a human-readable document format that is semantically equivalent to DocBook XML, but uses a plain text marku...
An ERR file is a generic file extension used to store error logs generated by various software applications, operating s...
X3D (Extensible 3D Graphics) is an open, royalty-free ISO standard for defining 3D computer graphics. It is the successo...
The .3ds file extension is a file format associated with the original Autodesk 3D Studio DOS program (later replaced by ...
An RCFILE is a configuration file used by various applications, particularly in Unix-like operating systems. The 'rc' su...
FictionBook (FB2) is an XML-based e-book format primarily designed for representing books in a structured and standardiz...
A VHD (Virtual Hard Disk) file is a disk image format that represents a virtual hard drive. It essentially acts as a con...
A PLT file is a vector graphics file format primarily associated with Hewlett-Packard Graphics Language (HPGL). HPGL is ...
The SDB file extension is primarily associated with StarOffice and OpenOffice.org, specifically their database component...
The file extension 'olecontrolextension7' is not a standard or widely recognized file extension. It likely represents a ...
The FDX file format is the native file format for Final Draft, a popular screenwriting software used extensively in the ...
Categories are organized by file type purpose: Documents, Images, Audio, Video, Archives, Executables, Data files, and Programming files.
Yes, use the alphabetic filter buttons to quickly find extensions starting with specific letters.
Each extension page includes software compatibility, file descriptions, alternatives, and usage information.