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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
Archive Letter: R Clear all
.RAR

Roshal Archive

The RAR (Roshal Archive) file format is a proprietary archive file format that supports data compression, error recovery, and file spa…

Archive
.RPM

RPM Package Manager

RPM (originally Red Hat Package Manager, now a recursive acronym) is a package management system. RPM files are used to distribute sof…

Archive
.RAR

Roshal Archive

The RAR (Roshal Archive) file format is a proprietary archive file format that supports data compression, error recovery, and file spanning. The 'part1.rar' na…

Archive
.RPM

RPM Package Manager

RPM (originally Red Hat Package Manager, now a recursive acronym) is a package management system. RPM files are used to distribute software on Linux and other…

Archive

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.