File Extension Database
We currently track 12,178 file extensions.
Learn what programs open each file type, read technical details, and use our free online tools.
What We Offer
Extension Database
Comprehensive database of 12,000+ file extensions with detailed descriptions in 8 languages.
Browse Database →Free Online Tools
Analyze files, calculate hashes, view hex dumps, and search our extension database.
Try Tools →Educational Articles
Learn about file formats, security, and how to open different file types on any platform.
Read Articles →Popular extensions
.PPS
Open PPS file
.APPLICATION-JSON
Open APPLICATION-JSON file
.DLL
Open DLL file
.DAT
Open DAT file
.XLS
Open XLS file
.CRDOWNLOAD
Open CRDOWNLOAD file
.APK
Open APK file
.TORRENT
Open TORRENT file
.HEIC
Open HEIC file
.DIAGCAB
Open DIAGCAB file
.HEIF
Open HEIF file
.FLV
Open FLV file
.RAR
Open RAR file
.TMP
Open TMP file
.MOV
Open MOV file
.VOB
Open VOB file
.WPD
Open WPD file
.PPT
Open PPT file
.RPMSG
Open RPMSG file
.JSON
Open JSON file
.ICS
Open ICS file
.PKG
Open PKG file
.PART
Open PART file
.M4A
Open M4A file