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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.

3
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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3 extensions
Archive Letter: I Clear all
.IPA

iOS App Package

The IPA (iOS App Package) file extension is a proprietary archive file format used by Apple's iOS operating system to distribute appli…

Archive
.IPSW

iPhone Software Package

An IPSW file is a proprietary archive format used by Apple to distribute firmware updates for iOS, iPadOS, tvOS, and watchOS devices…

Archive
.ISO

International Organization for Standardization (ISO) Disk Image

An ISO file, often referred to as an ISO image, is an archive file that contains an identical copy (or image) of the data found on an…

Archive
.IPA

iOS App Package

The IPA (iOS App Package) file extension is a proprietary archive file format used by Apple's iOS operating system to distribute applications. It essentially f…

Archive
.IPSW

iPhone Software Package

An IPSW file is a proprietary archive format used by Apple to distribute firmware updates for iOS, iPadOS, tvOS, and watchOS devices. It contains all the neces…

Archive
.ISO

International Organization for Standardization (ISO) Disk Image

An ISO file, often referred to as an ISO image, is an archive file that contains an identical copy (or image) of the data found on an optical disc, like a CD…

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.