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File Extensions

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.

4
Indexed file extensions

Find the right information for any file extension

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.

Search by extension Enter extensions like PDF, APK, DAT, HEIC, ZIP, or DOCX.
Browse categories Filter by documents, images, videos, archives, data, and more.
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4 extensions
Programming Letter: D Clear all
.DIFF

Patch File

A DIFF file, also known as a patch file, is a plain text document that describes the differences between two versions of a file, typic…

Programming
.DOCKERIGNORE

Docker Ignore File

A .dockerignore file is a configuration file used by the Docker command-line interface (CLI) to define which files and directories sho…

Programming
.DSP

Digital Signal Processing Project File

The DSP file extension is primarily associated with Microsoft Visual Studio, where it serves as a project file for older versions of t…

Programming
.DVB

AutoCAD VBA Project File

An AutoCAD VBA Project file, identified by the .dvb extension, is a specialized file format used by Autodesk's AutoCAD software to sto…

Programming

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.