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A (114 file types)

File extensions that start with the letter A

Extension Name of file type Ranking
.a Static Library File
.aa Audible Audio Book File
.aac Advanced Audio Coding File
.aaf Advanced Authoring Format Multimedia File
.aam Adobe Authorware Shocked File
.aax Audible Enhanced Audio File
.ab2 Parson's Address Book File
.aba Palm Address Book Archive File
.abc ABC Music Notation File
.abi DNA Chromatogram File
.abk Automatic Backup File
.abm Photo Album File
.abr Adobe Photoshop Brush File
.abs Absolute Database Single-file Database File
.abw Abiword Document File
.aby AOL Address Book File
.ac3 Audio Codec 3 File
.aca Agent Character Animation File
.acc Graphics Accounts Data File
.acd ACID Project File
.ace Winace Compressed Ace Archive File
.acf Steam Application Cache File
.acl AutoCorrect List File
.acm Interplay Audio File
.acs Agent Character File
.acsm Adobe Content Server Message File
.act Adpcm Compressed Audio File
.ad After Dark Screen Saver File
.adb Alpha Five Database File
.adc Scanstudio 16 Colours Bitmap Graphics File
.adf ESRI ArcInfo Binary Grid Format
.adi Active@ Disk Image File
.adm Administrative Template File
.adr Opera Bookmarks File
.adv Nortek Acoustic Doppler Velocimeter File
.adx Approach Database Index File
.adz Amiga Emulator Compressed ADF File
.aep After Effects Project File
.aex Alpha Five Compiled Global Functions File
.aff AFF Disk Image File
.afm Adobe Font Metrics File
.afs Staad.foundation Project File
.aft Ancestry.com Family Tree Database File
.ai Adobe Illustrator Graphics File
.aif Audio Interchange File Format Sound File
.aifc Compressed Audio Interchange File
.aiff Audio Interchange File Format
.ain Source Engine Compiled AI Nodegraph File
.air Adobe AIR Installation Package File
.ajp CCTV Video File
.alb Alpha Five Library File
.albm Photo Album File
.all Cubasis Project File
.als Ableton Live Set File
.alx ActiveX Layout Control File
.alz ALZip Archive File
.amr Adaptive Multi-rate Compressed Audio File
.amv Amv Video File Format
.amx Adobe Motion Exchange File
.amz Amazon Mp3 Downloader File
.ani Animated Cursor File
.ann Microsoft Windows Help Annotation File
.ans ANSI Text File
.aos ARCHOS PCtablet Firmware File
.ap Active Page File
.ape Monkey's Audio Lossless Audio File
.apf Adobe Profile File
.api Acrobat Plug-in File
.apk Google Android Package File
.apl Monkey's Audio Track Info File
.apm Aldus Placeable Metafile
.app Mac OS X Application File
.apr Arcview Project File
.apx Ability Photopaint Image File
.arc Symbian OS Backup File
.arf Webex Advanced Recording File
.arg Autocad Profile Export File
.arj Arj Compressed Archive File
.arl Aol Organizer File
.arp Audition Replay File
.arr Advanced Rar Password Recovery Project File
.art AOL Compressed Image File
.asc ActionScript Communication File
.ascii Ascii Text Characters File
.ascx Active Server Pages Web User Control File
.asd Word AutoSave File
.asf Advanced Systems (streaming) Format
.asi Alpha Five Variable File
.asm Assembly Language Source Code File
.asp Active Server Page Script Page File
.aspx Active Server Page Extended Asp.net Script File
.asr ActionScript Remote Document File
.asx Microsoft ASF Redirector File
.atn Adobe Photoshop Actions Settings File
.atr Atari 8-bit Disk Image File
.att Web Form Post Data File
.au3 Autoit V3 Script File
.aud Westwood Studios Audio File
.aup Audacity Project File
.aut AutoIt Script File
.aux LaTeX Auxiliary File
.avb Avid Bin File
.avchd High Definition Video File
.avd Magix Movie Edit Pro Video Data File
.avi Audio Video Interleave Movie File
.avx Arcview Extension Plugin File
.awd Microsoft Fax Document File
.aws Ability Spreadsheet Spreadsheet File
.ax Directshow Filter File
.axd Asp.net Web Handler File
.axe AutoRoute Map File
.axx Axcryot Encrypted File
.azw Amazon Kindle eBook File
.azz Azz Cardfile Information Card File