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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.

2
Indexed file extensions
Popular searches:
.DOCX .7Z .AUTOCAD (DWG, DXF) .PDF .TXT .OBJ (.OBJ)

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.
Open files safely Check file sources and use trusted software before opening unknown files.

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2 extensions
Executable Letter: B Clear all
.BAT

Batch File

A .BAT file is a batch file containing a series of commands to be executed by the command-line interpreter (usually cmd.exe) in Window…

Executable
.BTM

Batch To Memory

A .BTM file is a batch file used by Take Command Console (TCC), a command-line interpreter for Windows. TCC is a replacement for the s…

Executable
.BAT

Batch File

A .BAT file is a batch file containing a series of commands to be executed by the command-line interpreter (usually cmd.exe) in Windows. These files are plain…

Executable
.BTM

Batch To Memory

A .BTM file is a batch file used by Take Command Console (TCC), a command-line interpreter for Windows. TCC is a replacement for the standard CMD.EXE command p…

Executable

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.