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 DOCX file extension represents a Microsoft Word Open XML Document. Introduced with Microsoft Office 2007, it's the default file fo…
The 7z file extension represents an archive format used by the 7-Zip file archiver. It is a popular open-source format known for its h…
DWG (Drawing) is a proprietary binary file format used for storing two- and three-dimensional design data and metadata. It is the nati…
The PDF (Portable Document Format) is a file format developed by Adobe in the 1990s to present documents, including text formatting an…
A TXT file is a standard text document that contains unformatted text. It is one of the most basic and universally supported file form…
The Wavefront .OBJ file format is a geometry definition file format first developed by Wavefront Technologies for its Advanced Visuali…
JSON (JavaScript Object Notation) is a lightweight, human-readable data-interchange format. It is widely used for transmitting data be…
A CSV (Comma Separated Values) file is a plain text file that stores tabular data (numbers and text) in a simple, structured format. E…
The MDB file extension is primarily associated with Microsoft Access, a database management system (DBMS) from Microsoft. MDB files st…
A PHTML file is a web page file containing PHP code. It's essentially an HTML file with embedded PHP scripts. The server's PHP engine…
STEP (Standard for the Exchange of Product Data) files, identified by the extensions .stp or .step, are a widely used ISO standard (IS…
The PSB file format, also known as "Photoshop Big," is an Adobe Photoshop file format designed to support extremely large images. It i…
The IGES (Initial Graphics Exchange Specification) file format is a vendor-neutral file format that allows the digital exchange of inf…
The STL (Stereolithography) file format is a widely used file format for representing 3D surface geometry. It is primarily used for ra…
The ODT file extension represents a text document format used by word processors. It is the main document format for the OpenOffice an…
glTF (GL Transmission Format) is a royalty-free, open standard for 3D scene and model transmission, developed by the Khronos Group. Th…
GeoTIFF is a public domain metadata standard which allows georeferencing information to be embedded within a TIFF (Tagged Image File F…
Parasolid files, typically with extensions like .x_t (text) or .x_b (binary), are a common format for representing 3D solid models. Th…
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…
A VBS file is a text file containing code written in Visual Basic Scripting Edition (VBScript). VBScript is a scripting language devel…
A 'tar.gz' file is a compressed archive format commonly used in Unix-like operating systems. It combines two separate processes: archi…
Scalable Vector Graphics (SVG) is an XML-based vector image format for two-dimensional graphics with support for interactivity and ani…
The .sqlite file extension typically indicates a database file created using the SQLite database management system. SQLite is a self-c…
QCOW2 (QEMU Copy On Write version 2) is a disk image format used by QEMU, a popular open-source virtualization solution. It's designed…
The DOCX file extension represents a Microsoft Word Open XML Document. Introduced with Microsoft Office 2007, it's the default file format for saving documents…
The 7z file extension represents an archive format used by the 7-Zip file archiver. It is a popular open-source format known for its high compression ratio, of…
DWG (Drawing) is a proprietary binary file format used for storing two- and three-dimensional design data and metadata. It is the native format for AutoCAD, a…
The PDF (Portable Document Format) is a file format developed by Adobe in the 1990s to present documents, including text formatting and images, in a manner ind…
A TXT file is a standard text document that contains unformatted text. It is one of the most basic and universally supported file formats, designed to store se…
The Wavefront .OBJ file format is a geometry definition file format first developed by Wavefront Technologies for its Advanced Visualizer animation package. It…
JSON (JavaScript Object Notation) is a lightweight, human-readable data-interchange format. It is widely used for transmitting data between a server and web ap…
A CSV (Comma Separated Values) file is a plain text file that stores tabular data (numbers and text) in a simple, structured format. Each line of the file repr…
The MDB file extension is primarily associated with Microsoft Access, a database management system (DBMS) from Microsoft. MDB files store the entire database s…
A PHTML file is a web page file containing PHP code. It's essentially an HTML file with embedded PHP scripts. The server's PHP engine processes the PHP code wi…
STEP (Standard for the Exchange of Product Data) files, identified by the extensions .stp or .step, are a widely used ISO standard (ISO 10303) for representing…
The PSB file format, also known as "Photoshop Big," is an Adobe Photoshop file format designed to support extremely large images. It is essentially an extended…
The IGES (Initial Graphics Exchange Specification) file format is a vendor-neutral file format that allows the digital exchange of information among Computer-A…
The STL (Stereolithography) file format is a widely used file format for representing 3D surface geometry. It is primarily used for rapid prototyping, 3D print…
The ODT file extension represents a text document format used by word processors. It is the main document format for the OpenOffice and LibreOffice suites, and…
glTF (GL Transmission Format) is a royalty-free, open standard for 3D scene and model transmission, developed by the Khronos Group. The 'glb' file extension re…
GeoTIFF is a public domain metadata standard which allows georeferencing information to be embedded within a TIFF (Tagged Image File Format) file. This means t…
Parasolid files, typically with extensions like .x_t (text) or .x_b (binary), are a common format for representing 3D solid models. They are the native file fo…
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…
A VBS file is a text file containing code written in Visual Basic Scripting Edition (VBScript). VBScript is a scripting language developed by Microsoft that is…
A 'tar.gz' file is a compressed archive format commonly used in Unix-like operating systems. It combines two separate processes: archiving and compression. Fir…
Scalable Vector Graphics (SVG) is an XML-based vector image format for two-dimensional graphics with support for interactivity and animation. The SVG specifica…
The .sqlite file extension typically indicates a database file created using the SQLite database management system. SQLite is a self-contained, serverless, zer…
QCOW2 (QEMU Copy On Write version 2) is a disk image format used by QEMU, a popular open-source virtualization solution. It's designed to be a flexible and eff…
Everything you need to know about file extensions