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File Extension Database

The extended reference book with specific data regarding more than 1 000 distinct file extensions.

Text Files

.ASC ASCII Text File
.1ST Readme File
.DOC Microsoft Word Document (before The 2007 Version)
.TXT Plain Text File
.OFT Outlook File Template
.CRWL Windows Crawl File
.RTF Rich Text Format File

Audio Files

.MP3 MP3 Audio File
.M4A MPEG-4 Audio File
.S3M V3 Sound File
.CGRP Binary Audio Files
.FLP FL Studio Project File
.MOD Amiga Music Module File
.ABC ABC Music Notation

Video Files

.MKV Matroska Video File
.WEBM WebM Video File
.SWF Shockwave Flash Movie
.SEC Samsung Security Video File
.MP4 MPEG-4 Video File
.TS Video Transport Stream File
.AVI Audio Video Interleave File

Compressed Files

.CBR Comic Book RAR Archive
.CBZ Comic Book Zip Archive File
.ZIP Zipped File
.ACE WinAce Compressed File
.RAR WinRAR Compressed Archive
.DAR DAR Disk Archive File
.GZ Gnu Zipped Archive

Spreadsheet Files

.XLSM Microsoft Excel Open XML Macro-Enabled Spreadsheet
.XLS Microsoft Excel 97 To 2003 Spreadsheet
.XL Excel Spreadsheet
.XLSX Microsoft Excel Open XML Spreadsheet
.OTS OpenDocument Spreadsheet Template
.ODS OpenDocument Spreadsheet
.DEF SmartWare II Data File

eBook Files

.AZW Amazon Kindle eBook File
.FB2 FictionBook 2.0 File
.CBC Sony Portable Reader Comic E-book File
.MOBI Mobipocket eBook Format
.EPUB Open eBook File
.FB3 Primary FB3 File Association
.AZW4 Amazon Print Replica eBook

Executable Files

.APK Android Package File
.COM DOS Command File
.BAT DOS Batch File
.AHK AutoHotkey Script
.APP macOS Application Bundle
.IPA Apple iOS Application
.JAR Java Archive File

Raster Image Files

.DJVU DjVu Image
.BIF Ventana Whole Slide Image
.ICON Icon Image File
.JXL JPEG XL Image
.GIF Graphical Interchange Format File
.DDS DirectDraw Surface
.MNG Multiple Network Graphic

Camera Raw Image Files

.RAW Raw Image Data File
.RWL Leica D-Lux 4 RAW Image
.NRW Nikon Raw Image File
.NEF Nikon Electronic Format Camera RAW Image
.CR3 Canon Raw 3 Image File
.DCR Kodak Digital Camera RAW Image
.CR2 Canon Digital Camera Raw Image File

Vector Image Files

.VSDX Vector Image Files
.VSD Microsoft Visio Drawing File
.SVG Scalable Vector Graphics File
.EMF Enhanced Windows Metafile
.CDR CorelDRAW Vector Image File
.VSTM Microsoft Visio 2013 Macro-enabled Template File
.AI Adobe Illustrator File
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