Web File Types
The Web Files category includes files related to websites and Web servers. These include static and dynamic webpages, Web applications, and files referenced by webpages. Files generated by Web development software are also included in this category.
Common Web file extensions include .HTML, .ASP, .PHP, and .CSS.
| Extension | File Description | Popularity |
|---|---|---|
| .a5w | Alpha Five Webpage File | Common |
| .adr | Opera Bookmarks File | Average |
| .aex | Alpha Five Compiled Global Functions File | Average |
| .alx | ActiveX Layout Control File | Common |
| .ap | Active Page | Average |
| .aro | SteelArrow Web Application File | Average |
| .asa | ASP Configuration File | Average |
| .asax | ASP.NET Server Application File | Common |
| .ascx | ASP.NET User Control File | Average |
| .ashx | ASP.NET Web Handler File | Average |
| .asmx | ASP.NET Web Service File | Common |
| .asp | Active Server Page | Very Common |
| .aspx | Active Server Page Extended File | Common |
| .asr | ActionScript Remote Document | Average |
| .atom | Atom Syndication Format | Common |
| .att | Web Form Post Data File | Common |
| .awm | AllWebMenus Project File | Average |
| .axd | ASP.NET Web Handler File | Common |
| .bml | Bean Markup Language File | Average |
| .bok | ProStores Dynamic Web Page | Average |
| .browser | ASP.NET Browser Definition File | Average |
| .btapp | uTorrent App | Average |
| .cdf | Channel Definition Format | Rare |
| .cer | Internet Security Certificate | Very Common |
| .cfm | ColdFusion Markup File | Common |
| .cfml | ColdFusion Markup Language File | Uncommon |
| .cha | IRC Chat Configuration File | Average |
| .chat | IRC Chat Configuration File | Average |
| .chm | Compiled HTML Help File | Common |
| .cms | Content Management System | Rare |
| .compressed | WordCompress Compacted Web File | Rare |
| .con | Concept Application Source File | Average |
| .cpg | Cool Page Project File | Uncommon |
| .crdownload | Chrome Partially Downloaded File | Average |
| .crl | Certificate Revocation List File | Average |
| .crt | Security Certificate | Common |
| .cshtml | ASP.NET Razor Web Page | Common |
| .csp | Concept Server Page | Average |
| .csr | Certificate Signing Request File | Very Common |
| .css | Cascading Style Sheet | Very Common |
| .dap | Access Data Access Page | Average |
| .dbm | ColdFusion Server File | Uncommon |
| .dcr | Shockwave Media File | Average |
| .der | DER Certificate File | Average |
| .dhtml | Dynamic HTML file | Average |
| .disco | DISCO Discovery Document | Average |
| .discomap | DISCO Discovery Output File | Average |
| .dll | DLL Dynamic Web Page | Average |
| .dml | DynaScript File | Uncommon |
| .do | Java Servlet | Average |
| .dochtml | Microsoft Word HTML Document | Rare |
| .docmhtml | Microsoft Word MIME HTML Document | Rare |
| .dothtml | Microsoft Word HTML Document Template | Rare |
| .download | Partially Downloaded File | Average |
| .dwt | Dreamweaver Web Page Template | Common |
| .ece | Escenic Dynamic Web Page | Uncommon |
| .edge | Adobe Edge Project File | Average |
| .epibrw | Web File Location | Average |
| .esproj | Espresso Project File | Average |
| .ewp | Ewisoft Website Project File | Average |
| .fcgi | FastCGI File | Common |
| .fmp | 123 Flash Menu Project | Uncommon |
| .fwp | Microsoft Expression Web Package | Average |
| .gne | Flickr Web Page | Average |
| .gsp | IMail Error Message File | Average |
| .hdm | HDML File | Rare |
| .hdml | Handheld Device Markup Language File | Uncommon |
| .htaccess | Apache HTACCESS File | Average |
| .htc | HTML Component File | Uncommon |
| .htm | Hypertext Markup Language File | Very Common |
| .html | Hypertext Markup Language File | Very Common |
| .htx | HTML Extension File | Average |
| .hxs | Help 2 Compiled Help File | Average |
| .idc | Internet Database Connector File | Average |
| .iqy | Internet Query | Uncommon |
| .itms | iTunes Music Store Link File | Uncommon |
| .itpc | iTunes Podcast Link File | Uncommon |
| .iwdgt | iWeb Widget File | Average |
| .jcz | Liquid Motion Animation | Uncommon |
| .jhtml | Java HTML Web Page | Average |
| .jnlp | Java Web Start File | Average |
| .js | JavaScript File | Very Common |
| .json | JavaScript Object Notation File | Common |
| .jsp | Java Server Page | Very Common |
| .jspa | Java Servlet Alias | Uncommon |
| .jspx | XML Java Server Page | Common |
| .jst | JavaServer Page Document | Uncommon |
| .jvs | JavaScript Proxy Autoconfig File | Rare |
| .jws | Java Web Services File | Average |
| .lasso | Lasso Database-Driven Web Page | Average |
| .lbc | Cloaked Affiliate Link Builder Saved Link | Average |
| .maff | Mozilla Archive Format File | Average |
| .map | Image Map | Rare |
| .mapx | Mapjects Client Webparts File | Uncommon |
| .master | ASP.NET Master Page | Uncommon |
| .mht | MHTML Web Archive | Average |
| .mhtml | MIME HTML File | Average |
| .moz | Mozilla Cache File | Rare |
| .mspx | Microsoft ASP.NET Web Page | Average |
| .mvc | MivaScript Compiled File | Average |
| .mvr | IBM HotMedia Multimedia File | Rare |
| .nxg | eSite Builder NXG Web Page | Uncommon |
| .nzb | NewzBin Usenet Index File | Common |
| .obml | Opera Mini Saved Web Page | Average |
| .ognc | Dynamic Web Page | Average |
| .opml | Outline Processor Markup Language File | Common |
| .oth | OpenDocument HTML Template | Average |
| .p12 | Personal Information Exchange File | Average |
| .p7 | PKCS #7 Digital Certificate File | Uncommon |
| .p7b | PKCS #7 Certificate File | Average |
| .p7c | PKCS #7 Certificate File | Average |
| .pac | Proxy Auto-Config File | Common |
| .page | HybridJava Web Page | Uncommon |
| .pem | Privacy Enhanced Mail Certificate | Average |
| .php | Hypertext Preprocessor File | Very Common |
| .php3 | PHP 3 Web Page | Uncommon |
| .php4 | PHP 4 Web Page | Rare |
| .php5 | PHP 5 Web Page | Rare |
| .phtm | PHP-Based Web Page | Rare |
| .phtml | PHP Web Page | Rare |
| .ppthtml | PowerPoint HTML Presentation | Rare |
| .pptmhtml | Microsoft PowerPoint MIME HTML Presentation | Rare |
| .prf | PICS Rules File | Uncommon |
| .psp | PL/SQL Server Page | Average |
| .ptw | AutoCAD Publish To Web File | Uncommon |
| .pub | Public Key File | Average |
| .qbo | QuickBooks Online Bank Statement File | Common |
| .qf | Qompose Web Page Template | Average |
| .qrm | Qworum Message File | Uncommon |
| .rhtml | Ruby HTML Web Page | Average |
| .rjs | Ruby Javascript File | Average |
| .rss | Rich Site Summary | Very Common |
| .rt | RealText Streaming Text File | Average |
| .rw3 | RapidWeaver 3 Site File | Uncommon |
| .rwp | RapidWeaver Package | Average |
| .rwsw | RapidWeaver Site File | Average |
| .saveddeck | Nokia Saved Web Page | Average |
| .sdb | SocialDecks Blog File | Rare |
| .seam | Seam Framework Java Servlet File | Uncommon |
| .sht | HTML File with Server Side Includes | Uncommon |
| .shtm | HTML Server Side Include File | Average |
| .shtml | Server Side Include HTML File | Average |
| .site | GoLive Website Project File | Uncommon |
| .sitemap | ASP.NET Site Map File | Average |
| .sites2 | iWeb Site Design Project | Average |
| .spc | Software Publisher Certificate File | Common |
| .srf | Server Response File | Average |
| .ssp | Scala Server Page | Uncommon |
| .stc | Contribute Connection Key File | Average |
| .stl | Certificate Trust List | Rare |
| .stm | SSI Web Page | Uncommon |
| .stml | SSI HTML File | Rare |
| .stp | SharePoint Template | Uncommon |
| .suck | SiteSucker Website File | Average |
| .svc | WCF Web Service File | Uncommon |
| .svr | Compressed Virtual World | Rare |
| .swz | Adobe Flash Player Cache File | Average |
| .tvpi | TitanTV Television Listing File | Average |
| .tvvi | TitanTV Television Listing File | Average |
| .ucf | WebEx Media File | Common |
| .uhtml | UC Browser Saved Webpage | Uncommon |
| .url | Internet Shortcut | Average |
| .vbd | Visual Basic ActiveX Document | Average |
| .vbhtml | ASP.NET Razor Web Page | Average |
| .vlp | LiveSite Project | Rare |
| .vrml | VRML File | Average |
| .vsdisco | DISCO Dynamic Discovery Document | Average |
| .wbxml | WAP Binary XML File | Uncommon |
| .wdgt | Opera Widget | Average |
| .web | Xara Web Document | Average |
| .webarchive | Safari Web Archive | Common |
| .webbookmark | Safari Web Bookmark File | Average |
| .webhistory | Safari Web History File | Average |
| .webloc | Mac OS X Website Location | Average |
| .website | Internet Explorer Pinned Site Shortcut | Average |
| .webz | WEBZ Compressed eBook File | Uncommon |
| .wgp | Web Gallery Project | Uncommon |
| .wgt | Opera Widget File | Common |
| .whtt | HTTrack Website Copier File | Average |
| .widget | HybridJava Widget | Uncommon |
| .wml | Wireless Markup Language File | Common |
| .wn | WN Web File | Uncommon |
| .woa | WebObjects Application | Average |
| .wpp | WebPlus Project File | Average |
| .wpx | WebPlus Project Template | Uncommon |
| .wrf | WebEx Recording | Average |
| .wsdl | Web Services Description Language File | Common |
| .xbel | XBEL Bookmarks File | Average |
| .xbl | Extensible Binding Language File | Uncommon |
| .xfdl | XFDL File | Common |
| .xht | XHTML File | Average |
| .xhtm | Extensible Hypertext Markup Language Document | Common |
| .xhtml | Extensible Hypertext Markup Language File | Very Common |
| .xpd | XML Pipeline Document | Average |
| .xss | XML Style Sheet | Uncommon |
| .xul | XML User Interface Language File | Average |
| .xws | Xara Web Designer Graphic | Uncommon |
| .zfo | XSL-FO Online Form | Average |
| .zhtml | Secure IE Zipped HTML File | Average |
| .zul | ZK User Interface File | Average |
| .zvz | Possible Virus File | Average |