Category Overview

Data File Extensions

Data file extensions are used by databases, applications, scientific tools, configuration systems, and structured datasets. Browse the formats below to identify a data file and find software that may read, import, edit, or export it.

441
Data Extensions
Category Guide

How to identify and use data file formats

Data files can be plain text, structured records, binary databases, caches, or application-specific resources. Avoid editing an unknown data file directly, keep a backup, and use the application that originally created it whenever possible.

Filter Extensions

Filter this category by the first letter of the extension.

441 Data Extensions Available
.BAK

Backup File

A BAK file is a backup file, a copy of data created as a safeguard in case the original data is lost or damaged. These files are common...

Data
.ES3

Easy Save 3 Data File

An ES3 file is a specialized data storage format primarily associated with Easy Save 3, a popular third-party asset for the Unity game...

Data
.OBB

Opaque Binary Blob

An OBB file is an expansion file used by the Android operating system to store additional data for applications. Because Android applic...

Data
.WRI

Microsoft Write Document

Microsoft Write was a basic word processor included with Windows 3.0 through Windows 95. It was a simplified version of Microsoft Word...

Data
.OSM

OpenStreetMap Map

The OSM file format is a data format used by OpenStreetMap (OSM), a collaborative project to create a free editable map of the world. O...

Data
.OLECONTROLEXTENSION7

Unknown OLE Control Extension 7 File

The file extension 'olecontrolextension7' is not a standard or widely recognized file extension. It likely represents a proprietary or...

Data
.OLECONTROLEXTENSION2

OLE Control Extension 2

The term 'olecontrolextension2' is not a standard or recognized file extension. It's highly likely that this is a placeholder, a tempor...

Data
.KF8

Amazon Kindle Format 8 eBook

KF8 (Kindle Format 8) is a file format developed by Amazon for use in Kindle eBooks. It is the successor to the older MOBI format and o...

Data
.SMC

Super Magicom Cartridge ROM

An SMC file is a ROM image of a game cartridge for the Super Nintendo Entertainment System (SNES). It contains a complete copy of the g...

Data
.PAGES

Apple Pages Document

The .pages file extension is associated with documents created by Apple Pages, a word processing and page layout application developed...

Data
.D64

Commodore 64 Disk Image

A D64 file is a disk image format commonly associated with the Commodore 64 (C64) home computer. It's essentially a digital representat...

Data
.TORRENT

BitTorrent File

A .torrent file is a metadata file used by the BitTorrent protocol. It doesn't contain the actual data being shared, but rather informa...

Data
.UNKNOWN

Unknown File Format

The file extension '1474' is not a recognized or standard file format. Without more context or information about the file's origin, it'...

Data
.AZW

Amazon Kindle eBook File

The AZW file format is a proprietary ebook format developed by Amazon for use on its Kindle e-readers and Kindle apps. It is based on t...

Data
.OLECONTROLEXTENSION6

OLE Control Extension 6

The 'olecontrolextension6' file extension is not a standard or widely recognized file format. It's highly likely that this extension is...

Data
.EXS

eXpressive Sound Font File

The .EXS file extension is primarily associated with the eXpressive Sound Font format, often used by Digidesign's Pro Tools software fo...

Data
.EDL

Edit Decision List

An Edit Decision List (EDL) is a text-based file format used in the post-production process of film and video editing. It contains an o...

Data
.W3X

Warcraft III Map File

A W3X file is a proprietary file format primarily used by Blizzard Entertainment's real-time strategy game, Warcraft III: The Frozen Th...

Data
.SCX

StarCraft Map File (Expansion)

The SCX file extension is primarily associated with StarCraft: Brood War, a classic real-time strategy game developed by Blizzard Enter...

Data
.7184

Unknown File Format

The file extension '7184' is not a recognized or standard file format. It's likely a custom extension used by a specific application or...

Data
.OSGB

OpenSceneGraph Binary File

The OSGB file format is a binary representation of a 3D scene graph used primarily by the OpenSceneGraph (OSG) library, which is an ope...

Data
.MSG

Microsoft Outlook Message File

The MSG file format is a proprietary binary file format developed by Microsoft used primarily by Microsoft Outlook to store individual...

Data
.PCAPNG

PCAP Next Generation Dump File

The PCAP Next Generation (pcap-ng) file format is the successor to the original libpcap (pcap) format, designed to overcome the limitat...

Data
.FASTQ

FASTQ format

The FASTQ format is a text-based file format used for storing biological sequence data, specifically the output from high-throughput DN...

Data
.BAK

Backup File

A BAK file is a backup file, a copy of data created as a safeguard in case the original data is lost or damaged. These files are commonly created auto...

.ES3

Easy Save 3 Data File

An ES3 file is a specialized data storage format primarily associated with Easy Save 3, a popular third-party asset for the Unity game engine. This fo...

.OBB

Opaque Binary Blob

An OBB file is an expansion file used by the Android operating system to store additional data for applications. Because Android application packages...

.WRI

Microsoft Write Document

Microsoft Write was a basic word processor included with Windows 3.0 through Windows 95. It was a simplified version of Microsoft Word, offering basic...

.OSM

OpenStreetMap Map

The OSM file format is a data format used by OpenStreetMap (OSM), a collaborative project to create a free editable map of the world. OSM files store...

.OLECONTROLEXTENSION7

Unknown OLE Control Extension 7 File

The file extension 'olecontrolextension7' is not a standard or widely recognized file extension. It likely represents a proprietary or custom file for...

.OLECONTROLEXTENSION2

OLE Control Extension 2

The term 'olecontrolextension2' is not a standard or recognized file extension. It's highly likely that this is a placeholder, a temporary file name...

.KF8

Amazon Kindle Format 8 eBook

KF8 (Kindle Format 8) is a file format developed by Amazon for use in Kindle eBooks. It is the successor to the older MOBI format and offers enhanced...

.SMC

Super Magicom Cartridge ROM

An SMC file is a ROM image of a game cartridge for the Super Nintendo Entertainment System (SNES). It contains a complete copy of the game's data, all...

.PAGES

Apple Pages Document

The .pages file extension is associated with documents created by Apple Pages, a word processing and page layout application developed by Apple Inc. a...

.D64

Commodore 64 Disk Image

A D64 file is a disk image format commonly associated with the Commodore 64 (C64) home computer. It's essentially a digital representation of a 5.25-i...

.TORRENT

BitTorrent File

A .torrent file is a metadata file used by the BitTorrent protocol. It doesn't contain the actual data being shared, but rather information about the...

.UNKNOWN

Unknown File Format

The file extension '1474' is not a recognized or standard file format. Without more context or information about the file's origin, it's impossible to...

.AZW

Amazon Kindle eBook File

The AZW file format is a proprietary ebook format developed by Amazon for use on its Kindle e-readers and Kindle apps. It is based on the Mobipocket f...

.OLECONTROLEXTENSION6

OLE Control Extension 6

The 'olecontrolextension6' file extension is not a standard or widely recognized file format. It's highly likely that this extension is either a custo...

.EXS

eXpressive Sound Font File

The .EXS file extension is primarily associated with the eXpressive Sound Font format, often used by Digidesign's Pro Tools software for storing instr...

.EDL

Edit Decision List

An Edit Decision List (EDL) is a text-based file format used in the post-production process of film and video editing. It contains an ordered list of...

.W3X

Warcraft III Map File

A W3X file is a proprietary file format primarily used by Blizzard Entertainment's real-time strategy game, Warcraft III: The Frozen Throne. It repres...

.SCX

StarCraft Map File (Expansion)

The SCX file extension is primarily associated with StarCraft: Brood War, a classic real-time strategy game developed by Blizzard Entertainment. These...

.7184

Unknown File Format

The file extension '7184' is not a recognized or standard file format. It's likely a custom extension used by a specific application or system, or it...

.OSGB

OpenSceneGraph Binary File

The OSGB file format is a binary representation of a 3D scene graph used primarily by the OpenSceneGraph (OSG) library, which is an open-source, high...

.MSG

Microsoft Outlook Message File

The MSG file format is a proprietary binary file format developed by Microsoft used primarily by Microsoft Outlook to store individual email messages...

.PCAPNG

PCAP Next Generation Dump File

The PCAP Next Generation (pcap-ng) file format is the successor to the original libpcap (pcap) format, designed to overcome the limitations of its pre...

.FASTQ

FASTQ format

The FASTQ format is a text-based file format used for storing biological sequence data, specifically the output from high-throughput DNA sequencing in...