WhatExt.Com
File Extension Library

💻 System File Extensions

Explore essential file types used by OSes to manage operations and execute tasks.

.bat
Executable File
.bak
Backup File
.cmd
Executable File
.cache
Cache File
.dat
Data File
.dll
System File
.drv
Driver File
.deb
Compressed Archive
.exe
Executable File
.hlp
Help File
.ini
Configuration File
.iso
Disk Image
.img
Disk Image
.inf
Settings File
.idx
Subtitle File
.key
Misc, System, Data, Settings
.nfo
System Information File
.pfx
PKCS #12 Certificate File
.rpm
Package File
.sys
System File
.tmp
Temporary File
.lock
System File
.000
Misc
.0
Shared Library Link File
.0xe
Executable File
.2fs
System File
._sys.lfo
Adware File
.8xu
TI-83 and TI-84 Plus Operating System File
.73u
System File
.3fs
System State File
.8cu
Operating System File
.208
BIOS Update File

🗂️ Categories

📦 Compressed
📄 Document
🎬 Video
🎵 Audio
🖼️ Image
🎨 Graphic
🧊 3D Image
🎞️ Media
👨‍💻 Developer
🗄️ Database
💻 System
🎮 Game
🌐 Web
📊 Data
🔒 Security
🔌 Plugin
📐 CAD
📁 Font
📁 Project Files
🧩 Miscellaneous
📁 General
🗜️ Archive

🔤 Browse File Extensions by Letter

ABCDEFGHIJKLMNOPQRSTUVWXYZ #