File Extensions

File Associations and Related File Types

File Extensions Beginning with "A"

.a Static Library
.a00 ALZip Second Split Archive File
.a01 ALZip Third Split Archive File
.a02 ALZip Fourth Split Archive File
.a2c Alice Object File
.a2m Adlib Tracker II File
.a2m TS-AudioToMIDI Settings File
.a2w Alice World
.a3l Authorware 3 Library
.a3m Authorware 3 Macintosh File
.a3w Authorware 3 Windows File
.a4l Authorware 4 Library
.a4m Authorware 4 Macintosh File
.a4w Authorware 4 Windows File
.a5l Authorware 5 Library
.a5w Authorware 5 Windows File
.a65 Authorware 6.5 File
.a6p Authorware 6 Project
.aa Audible Audio Book File
.aa Generic CD Image
.aa3 ATRAC Audio File
.aac Advanced Audio Coding File
.aae Sidecar Image Edit File
.aawdef Ad-Aware Definitions File
.aax Audible Enhanced Audiobook File
.ab Applix Builder File
.ab DNA Sequence File
.ab1 DNA Electropherogram File
.ab3 PhotoImpact 3 Album File
.abbu Address Book Backup
.abc ABC Music Notation
.abc ABC Source File
.abcd AudioVisual Book Data File
.abf Adobe Binary Screen Font File
.abi DNA Chromatogram File
.abk Automatic Backup File
.abk Need for Speed Audio Archive
.abm Photo Album
.abm Music Album
.abp AVS Barcode Profile
.abr Adobe Photoshop Brushes
.abw AbiWord Document
.ac Autoconf Script
.ac$ AutoCAD Temporary File
.ac3 Audio Codec 3 File
.ac5 ArtCut 5 Document
.ac6 ArtCut 6 Document
.aca Agent Character Animation File
.acb AOL Cab Launcher
.acc Graphics Accounts Data File
.accdb Access 2007 Database
.acd ACID Project File
.acd RSLogix 5000 Program
.ace WinAce Compressed File
.acf Agent Character Data File
.acfm Adobe Composite Font Metrics File
.acg Agent Preview File
.acl AutoCorrect List File
.acr American College of Radiology File
.acr ACRobot Script
.acr Acer eRecovery Management Backup File
.acrodata Acrobat Data File
.acs Agent Character File
.act FoxPro Documenting Wizard Action Diagram
.act ADPCM Compressed Audio
.act Genesis3D Actor File
.action Automator Action
.acx Atari ST Program
.ad After Dark Screensaver
.ada Ada Source Code
.adb Ada Body File
.adc Scanstudio 16 Color Image
.add Dynamics AX Developer Documentation File
.ade Access Project Extension
.adf Amiga Disk File
.adg Ableton Device Group
.adi AutoCAD Device-Independent Binary Plotter File
.adi Dynamics AX Developer Documentation Index File
.adm Administrative Template File
.adm Portfolio Admin-Level Access Flag
.adoc AsciiDoc Document
.adp Access Project
.adr Opera Bookmarks File
.ads Ada Specification File
.adt ACT! Document Template
.adt AutoCAD Audit Log
.adx Approach Index File
.adz Compressed Amiga Disk File
.aea Ae Timer Alarm Document
.aep After Effects Project
.aep Activ E-Book Project
.afm Adobe Font Metrics File
.afp FileProtector Encrypted File
.afp Advanced Function Presentation File
.afploc Apple Filing Protocol Location
.aft Ancestry.com Family Tree Database
.agd Agile Advantage E-mail Attachment
.agi Asterisk Gateway Interface File
.agif Active GIF Creator Project
.agp ArtGem Project File
.ahd Dynamics AX Online Help Data File
.ahi Dynamics AX Online Help Index File
.ahk AutoHotkey Script
.ahl eMule Metadata File
.ahs Adobe Halftone Screen File
.ahx AHX Music Tracker Module
.ai Adobe Illustrator Artwork
.aic Advanced Image Coding File
.aif Audio Interchange File Format
.aif Symbian Application Information File
.aifb AIF Builder Project File
.aifc Compressed Audio Interchange File
.aiff Audio Interchange File Format
.aim AOL Instant Messenger Launch File
.aim AIMMS ASCII Model File
.ain AIN Compressed Archive
.aip Adobe Illustrator Plug-in
.air Adobe AIR Installation Package
.ais ACDSee Image Sequence File
.ais Velvet Studio Advanced Instrument System
.aiu Advanced Installer Updates Configuration File
.ajp CCTV Video File
.akp Akai Sampler File
.al A-Law Compressed Sound Format
.alaw A-Law Compressed Sound Format
.alc Dynamics AX Label Description File
.ald Dynamics AX Application Label Data File
.ali Dynamics AX Label Index File
.all Cubasis Project File
.alt Dynamics AX Temporary File
.alz ALZip Archive
.am4 AutoPlay Media Studio 4 Project File
.am5 AutoPlay Media Studio 5 Project File
.am6 AutoPlay Media Studio 6 Project
.am7 AutoPlay Media Studio 7 Project
.amb AIMMS Model File
.amf Advanced Module File
.amfm Adobe Multiple Font Metrics File
.amr Adaptive Multi-rate Codec File
.ams Adobe Monitor Setup File
.ams Extreme Tracker Module
.ams Velvet Studio Advanced Module System
.amu PictureGear Studio Photo Album File
.amv Actions Media Video
.amx Adobe Motion Exchange File
.amx AMX Mod Plugin File
.amxx AMX Mod X Plugin File
.an1 Street Atlas USA Draw File
.an8 Anim8or File
.ani Windows Animated Cursor
.anm 3D Animation File
.anme Anime Studio Document
.ann Windows Help Annotations
.ans ANSI Text File
.aob DVD-Audio Audio Object File
.aod Dynamics AX Object Data File
.aoi Dynamics AX Application Object Index File
.aol America Online File
.ap Active Page
.apa RSView Development Project Archive
.apd Eclipse Plugin Descriptor File
.ape Monkey's Audio Lossless Audio File
.ape AVS Plugin Effects File
.api Acrobat Plug-in
.apk Android Package File
.apng Animated Portable Network Graphic
.app macOS Application Bundle
.app FoxPro Generated Application
.app Symbian OS Application
.applescript AppleScript File
.apr ArcView Project File
.apz Autoplay Media Studio Exported Project
.ar Unix Static Library
.ar Midtown Madness Data File
.arc Compressed File Archive
.arc African Safari Data File
.arch00 F.E.A.R. Game Archive
.ard ArtiosCAD Workspace File
.arf WebEx Advanced Recording File
.ari ARI Compressed Archive
.arj ARJ Compressed File Archive
.ark PowerDesk Pro Archive
.aro SteelArrow Web Application File
.arp Advanced RAR Password Recovery Setup
.arr Amber Graphic File
.arr Advanced RAR Password Recovery Project
.art AOL Compressed Image File
.art Art Document
.art Artifacts Artifact File
.artproj Artifacts Project
.as ActionScript File
.asa ASP Configuration File
.asat Assemble SAT 3D Model File
.asc ASCII Text File
.asc Autodesk ASCII Export File
.ascii ASCII Text File
.ascx ASP.NET User Control File
.ase Velvet Studio Advanced Sample System
.ase Autodesk ASCII Scene Export File
.asf Advanced Systems Format File
.ashx ASP.NET Web Handler File
.ask askSam Database
.asl Photoshop Style
.asm Assembly Language Source Code File
.asm Solid Edge Assembly File
.asmx ASP.NET Web Service File
.asp Active Server Page
.aspx Active Server Page Extended File
.asr ActionScript Remote Document
.ast Adobe Color Separations Table
.ast ClarisWorks Assistant File
.asx Microsoft ASF Redirector File
.atf Photoshop Transfer Function File
.atn Photoshop Actions File
.atom Atom Syndication Format
.atr Atari Disk Image
.atrac Sony ATRAC Audio File
.atx Animation Master Plugin File
.aty Association Type Placeholder
.atz Atomic Time Zone File
.atz Aston Compiled Theme
.au Sun Microsystems Audio File
.au3 AutoIt v3 Script
.aud Video Game Compressed Audio File
.aup Audacity Project File
.avb Avid Bin File
.avi Audio Video Interleave File
.avl ArcView Legend File
.avr Audio Visual Research File
.avs AviSynth Script File
.avs Application Visualization System File
.avs AVS Preset File
.awb AMR-WB Audio File
.awc Emulex AWC Firmware Update File
.awd Microsoft Fax Document
.awd Award BIOS Update File
.awd Artweaver Document
.awg Activeworlds Object Group File
.awk AWK Script
.ax DirectShow Filter
.axm AXMEDIS Object
.axx AxCrypt Encrypted File
.azw Amazon Kindle eBook File