Web Files

File extension File description Developer/Producer
.a4p
A4Desk Pro Project File Avanquest Software
.a5w
Alpha Five Webpage File Alpha Software
.adr
Opera Bookmarks File N/A
.aex
Alpha Five Compiled Global Functions File Alpha Software
.alx
ActiveX Layout Control File Microsoft
.an
Adobe Edge Animate Project File Adobe Systems
.ap
Active Page Fifth Generation Systems
.aro
SteelArrow Web Application File Tomahawk Technologies
.asa
ASP Configuration File N/A
.asax
ASP.NET Server Application File Microsoft
.ascx
ASP.NET User Control File Microsoft
.ashx
ASP.NET Web Handler File Microsoft
.asmx
ASP.NET Web Service File Microsoft
.asp
Active Server Page Microsoft
.aspx
Active Server Page Extended File Microsoft
.asr
ActionScript Remote Document Adobe Systems
.atom
Atom Syndication Format N/A
.att
Web Form Post Data File N/A
.awm
AllWebMenus Project File Likno Software
.axd
ASP.NET Web Handler File Microsoft
.bml
Bean Markup Language File N/A
.bok
ProStores Dynamic Web Page eBay
.browser
ASP.NET Browser Definition File Microsoft
.btapp
uTorrent App BitTorrent
.bwp
BuRg3r Web Page Fluffy Smoke Entertainment
.cdf
Channel Definition Format N/A
.cer
Internet Security Certificate N/A
.cfm
ColdFusion Markup File Adobe Systems
.cfml
ColdFusion Markup Language File Adobe Systems
.cha
IRC Chat Configuration File N/A
.chat
IRC Chat Configuration File N/A
.chm
Compiled HTML Help File Microsoft
.cms
Content Management System N/A
.codasite
Coda Site File Panic
.compressed
WordCompress Compacted Web File WordCompress
.con
Concept Application Source File RadGs
.cpg
Cool Page Project File 3Dize
.crl
Certificate Revocation List File N/A
.crt
Security Certificate N/A
.cshtml
ASP.NET Razor Web Page Microsoft
.csp
Concept Server Page RadGs
.csr
Certificate Signing Request File N/A
.css
Cascading Style Sheet N/A
.dap
Access Data Access Page Microsoft
.dbm
ColdFusion Server File Adobe Systems
.dcr
Shockwave Media File Adobe Systems
.der
DER Certificate File N/A
.dhtml
Dynamic HTML file N/A
.disco
DISCO Discovery Document Microsoft
.discomap
DISCO Discovery Output File Microsoft
.dll
DLL Dynamic Web Page N/A
.dml
DynaScript File Dynascript Technologies
.do
Java Servlet N/A
.dochtml
Microsoft Word HTML Document Microsoft
.docmhtml
Microsoft Word MIME HTML Document Microsoft
.dothtml
Microsoft Word HTML Document Template Microsoft
.download
Partially Downloaded File N/A
.dwt
Dreamweaver Web Page Template Adobe Systems
.ece
Escenic Dynamic Web Page Escenic
.edge
Adobe Edge Project File Adobe Systems
.epibrw
Web File Location N/A
.esproj
Espresso Project File MacRabbit
.ewp
Ewisoft Website Project File Ewisoft
.fcgi
FastCGI File FastCGI
.fmp
123 Flash Menu Project Dreamingsoft
.fwp
Microsoft Expression Web Package Microsoft
.gne
Flickr Web Page Ludicorp
.gsp
IMail Error Message File Ipswitch
.hdm
HDML File Openwave
.hdml
Handheld Device Markup Language File Openwave
.htaccess
Apache HTACCESS File N/A
.htc
HTML Component File Microsoft
.htm
Hypertext Markup Language File N/A
.html
Hypertext Markup Language File N/A
.htx
HTML Extension File Microsoft
.hxs
Help 2 Compiled Help File Microsoft
.hype
Hype Document Tumult
.idc
Internet Database Connector File Microsoft
.iqy
Internet Query Microsoft
.itms
iTunes Music Store Link File Apple
.itpc
iTunes Podcast Link File Apple
.iwdgt
iWeb Widget File Apple
.jcz
Liquid Motion Animation Microsoft
.jhtml
Java HTML Web Page N/A
.jnlp
Java Web Start File Oracle
.js
JavaScript File N/A
.json
JavaScript Object Notation File N/A
.jsp
Java Server Page Oracle
.jspa
Java Servlet Alias N/A
.jspx
XML Java Server Page N/A
.jss
JavaScript Style Sheet File JSS
.jst
JavaServer Page Document Oracle
.jvs
JavaScript Proxy Autoconfig File N/A
.jws
Java Web Services File BEA Systems
.lasso
Lasso Database-Driven Web Page LassoSoft
.lbc
Cloaked Affiliate Link Builder Saved Link Curry K. Software
.less
LESS Style Sheet Alexis Sellier
.maff
Mozilla Archive Format File Mozilla
.map
Image Map N/A
.mapx
Mapjects Client Webparts File Mapjects Development
.master
ASP.NET Master Page Microsoft
.mht
MHTML Web Archive N/A
.mhtml
MIME HTML File N/A
.moz
Mozilla Cache File N/A
.mspx
Microsoft ASP.NET Web Page Microsoft
.muse
Adobe Muse Website Project Adobe Systems
.mvc
MivaScript Compiled File Miva Merchant
.mvr
IBM HotMedia Multimedia File IBM
.nod
NetObjects Fusion File NetObjects
.nxg
eSite Builder NXG Web Page Motorola
.nzb
NewzBin Usenet Index File NewzBin.com
.oam
Adobe Edge Animate Widget File Adobe Systems
.obml
Opera Mini Saved Web Page Opera Software
.ognc
Dynamic Web Page N/A
.opml
Outline Processor Markup Language File N/A
.oth
OpenDocument HTML Template OASIS
.p12
Personal Information Exchange File RSA Laboratories
.p7
PKCS #7 Digital Certificate File N/A
.p7b
PKCS #7 Certificate File N/A
.p7c
PKCS #7 Certificate File N/A
.pac
Proxy Auto-Config File Netscape
.page
HybridJava Web Page HybridServerPages Group
.pem
Privacy Enhanced Mail Certificate N/A
.php
PHP Source Code File N/A
.php3
PHP 3 Web Page N/A
.php4
PHP 4 Web Page N/A
.php5
PHP 5 Web Page N/A
.phtm
PHP-Based Web Page N/A
.phtml
PHP Web Page N/A
.ppthtml
PowerPoint HTML Presentation Microsoft
.pptmhtml
Microsoft PowerPoint MIME HTML Presentation Microsoft
.prf
PICS Rules File W3C
.pro
Adobe Proto Design File Adobe Systems
.psp
PL/SQL Server Page Oracle
.ptw
AutoCAD Publish To Web File Autodesk
.pub
Public Key File N/A
.qbo
QuickBooks Online Bank Statement File Intuit
.qf
Qompose Web Page Template Qompose
.qrm
Qworum Message File Qworum
.rhtml
Ruby HTML Web Page N/A
.rjs
Ruby Javascript File N/A
.rss
Rich Site Summary N/A
.rt
RealText Streaming Text File RealNetworks
.rw3
RapidWeaver 3 Site File Realmac Software
.rwp
RapidWeaver Package Realmac Software
.rwsw
RapidWeaver Site File Realmac Software
.rwtheme
RapidWeaver Theme Realmac Software
.saveddeck
Nokia Saved Web Page Nokia
.sdb
SocialDecks Blog File SocialDecks
.seam
Seam Framework Java Servlet File JBoss
.sht
HTML File with Server Side Includes N/A
.shtm
HTML Server Side Include File N/A
.shtml
Server Side Include HTML File N/A
.site
GoLive Website Project File Adobe Systems
.sitemap
ASP.NET Site Map File Microsoft
.sites
iWeb Site Design Project Apple
.sites2
iWeb Site Design Project Apple
.spc
Software Publisher Certificate File N/A
.srf
Server Response File Microsoft
.ssp
Scala Server Page Scalate
.stc
Contribute Connection Key File Adobe Systems
.stl
Certificate Trust List Microsoft
.stm
SSI Web Page N/A
.stml
SSI HTML File N/A
.stp
SharePoint Template Microsoft
.suck
SiteSucker Website File SiteSucker
.svc
WCF Web Service File Microsoft
.svr
Compressed Virtual World Superscape
.swz
Adobe Flash Player Cache File Adobe Systems
.tvpi
TitanTV Television Listing File Decisionmark
.tvvi
TitanTV Television Listing File Decisionmark
.ucf
WebEx Media File Cisco Systems
.uhtml
UC Browser Saved Webpage UC Mobile
.url
Internet Shortcut N/A
.vbd
Visual Basic ActiveX Document Microsoft
.vbhtml
ASP.NET Razor Web Page Microsoft
.vdw
Visio Web Drawing Microsoft
.vlp
LiveSite Project Valadeo
.vrml
VRML File N/A
.vsdisco
DISCO Dynamic Discovery Document Microsoft
.wbxml
WAP Binary XML File Open Mobile Alliance
.wdgt
Opera Widget N/A
.web
Xara Web Document MAGIX
.webarchive
Safari Web Archive Apple
.webarchivexml
Android Web Browser Archive Google
.webbookmark
Safari Web Bookmark File Apple
.webhistory
Safari Web History File Apple
.webloc
Mac OS X Website Location Apple
.website
Internet Explorer Pinned Site Shortcut Microsoft
.wgp
Web Gallery Project WebHat
.wgt
Opera Widget File Opera Software
.whtt
HTTrack Website Copier File Xavier Roche
.widget
HybridJava Widget HybridServerPages Group
.wml
Wireless Markup Language File N/A
.wn
WN Web File WN
.woa
WebObjects Application Apple
.wpp
WebPlus Project File Serif
.wpx
WebPlus Project Template Seif
.wrf
WebEx Recording Cisco Systems
.wsdl
Web Services Description Language File W3C
.xbel
XBEL Bookmarks File Python XML SIG
.xbl
Extensible Binding Language File Mozilla
.xfdl
XFDL File UWI
.xht
XHTML File N/A
.xhtm
Extensible Hypertext Markup Language Document N/A
.xhtml
Extensible Hypertext Markup Language File N/A
.xpd
XML Pipeline Document N/A
.xss
XML Style Sheet Oracle
.xul
XML User Interface Language File Mozilla
.xws
Xara Web Designer Graphic MAGIX
.zfo
XSL-FO Online Form N/A
.zhtml
Secure IE Zipped HTML File Winferno Software
.zul
ZK User Interface File Potix
.zvz
Possible Virus File N/A