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File Extensions

Clear explanations, compatible software, and practical guidance for file extensions.

717
Indexed file extensions
Popular searches:
.docx .psb .phtml .odt .pdf .7z

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717 extensions
.TTF

TrueType Font

Data
.DDL

Data Definition Language File

Data
.HDF5

Hierarchical Data Format version 5

Data
.JPG

Joint Photographic Experts Group

Image
.CAB

Cabinet File

Archive
.SEQUENCEFILE

Sequence File

Data
.SYS

System File

Data
.JT

Jupiter Tessellation

Data
.IGES (.IGS, .IGES)

Initial Graphics Exchange Specification

Data
.M4A

MPEG-4 Audio

Audio
.ASPX

Active Server Pages Extended

Programming
.XYZ

Extensible Markup Language

Data
.MUSTACHE

Mustache Template

Programming
.CFG

Configuration File

Data
.PROPERTIES

Java Properties File

Data
.DRV

Device Driver

Executable
.MJS

JavaScript Module

Programming
.PARASOLID (.X_T, .X_B)

Parasolid Model Part

Data
.XSLT

Extensible Stylesheet Language Transformations

Programming
.MACH-O

Mach Object File Format

Executable
.ORC

Optimized Row Columnar

Data
.NDF

SQL Server Secondary Data File

Data
.APPIMAGE

AppImage

Executable
.ERB

Embedded Ruby

Programming
.TTF

TrueType Font

Data
.DDL

Data Definition Language File

Data
.HDF5

Hierarchical Data Format version 5

Data
.JPG

Joint Photographic Experts Group

Image
.CAB

Cabinet File

Archive
.SEQUENCEFILE

Sequence File

Data
.SYS

System File

Data
.JT

Jupiter Tessellation

Data
.IGES (.IGS, .IGES)

Initial Graphics Exchange Specification

Data
.M4A

MPEG-4 Audio

Audio
.ASPX

Active Server Pages Extended

Programming
.XYZ

Extensible Markup Language

Data
.MUSTACHE

Mustache Template

Programming
.CFG

Configuration File

Data
.PROPERTIES

Java Properties File

Data
.DRV

Device Driver

Executable
.MJS

JavaScript Module

Programming
.PARASOLID (.X_T, .X_B)

Parasolid Model Part

Data
.XSLT

Extensible Stylesheet Language Transformations

Programming
.MACH-O

Mach Object File Format

Executable
.ORC

Optimized Row Columnar

Data
.NDF

SQL Server Secondary Data File

Data
.APPIMAGE

AppImage

Executable
.ERB

Embedded Ruby

Programming
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Frequently Asked Questions

Everything you need to know about file extensions

You can search by entering a file extension directly in the search bar or browse the directory by category or alphabetical index.

Each listing provides a definition of the file extension, common use cases, compatible software, supported platforms, and related or alternative formats.

The database is updated regularly to reflect new file extensions, changes in software compatibility, and evolving file format standards.