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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
.TXT Plain Text File
.PRT Printer Output File
.1ST Readme File
.CRD Guitar chord File
.DOC Microsoft Word Document (before The 2007 Version)
.OFT Outlook File Template

Audio Files

.ABC ABC Music Notation
.MP3 MP3 Audio File
.FLP FL Studio Project File
.BANK FMOD Audio Bank
.MOD Amiga Music Module File
.M4A MPEG-4 Audio File
.S3M V3 Sound File

Video Files

.SEC Samsung Security Video File
.CME Command Multimedia Evidence File
.SMI SAMI Subtitles File
.VID Generic Video File
.AV3 Arbitrator Video Surveillance File
.SWF Shockwave Flash Movie
.M4S MPEG-DASH Video Segment

Compressed Files

.CBR Comic Book RAR Archive
.SPD S Note File
.CBZ Comic Book Zip Archive File
.CAR CAR Archive
.ZIP Zipped File
.DAR DAR Disk Archive File
.SDC Secure Download Cabinet

Spreadsheet Files

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

eBook Files

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

Executable Files

.PRG Program File
.COM DOS Command File
.HTA HTML Application
.CGI Common Gateway Interface Script
.AHK AutoHotkey Script
.APK Android Package File
.BAT DOS Batch File

Raster Image Files

.DJVU DjVu Image
.HIF High Efficiency Image Format
.BIF Ventana Whole Slide Image
.JXL JPEG XL Image
.ART AOL Compressed Image File
.DDS DirectDraw Surface
.ICON Icon Image File

Camera Raw Image Files

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

Vector Image Files

.INK InkML Image
.WMZ Compressed Windows Metafile
.VSDX Vector Image Files
.CDR CorelDRAW Vector Image File
.EMF Enhanced Windows Metafile
.AFDESIGN Affinity Design Document
.MP LaTeX MetaPost File
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