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List of common internet related file extensions
Some of the most common file types users may encounter when working with internet.
Common internet related files may change in time as the popularity and significance of some formats can change.
Whole category of internet related files contains now 413 file types. Show all internet related file types.
 ashx | An ashx file extension is associated with the ASP.NET and used for one of the web page formats. Typically processed by Internet servers. You can view the content of ashx files in any text editor. |
 asp | An asp file extension is associated with the ASP Classic server side scripting engine used to dynamically generate web pages. An asp file contains Microsoft Active Server Page source code scripts. The ASP Classic is obsolete and it was replaced by ASP.NET. |
 aspx | An aspx file extension is associated with Active Server Page Extended format used by Internet Information Services (IIS) web server with server-side scripting language ASP.NET used to generate websites dynamically. Generated output from the .aspx page in your browser is a standard HTML page. |
 atom | Files with atom file extension are used for web feeds, stored in XML text file format. |
Files with bc extension can be mainly found as files that represent unfinished downloads in progress which were initiated in some of the BitTorrent clients, for example BitComet. | |
Files with bc! file extensions can be commonly found as partially downloaded files saved by BitTorrent clients. These are renamed until the download is finished. | |
 class | Files with class extension are mainly related to the Java programming language and used for compiled Java source codes known as Class bytecode files. |
 crdownload | Files with the crdownload extension are partially downloaded files that are either still downloaded by Chrome web browser or were not completed. Once the download is finished, these files' extensions are restored to the original. |
 css | A css file extension is commonly used for text files that contain Cascading Style Sheets data, which are used on websites and define graphic layout and look of webpages. |
 dlc | Files with dlc extension can be quite often encountered as download links for JDownloader. Used to create download lists and download several files at once using HTTP protocol. |
 download | Files with download file extension could, especially in the past, be found as incomplete downloads originally started by Firefox web browser version 1.x to 2.x. |
 download | A download file extension is related to Apple Safari web browser for Mac OS X and Microsoft Windows. A download file stores incomplete download. |
 eml | An eml file extension is used by various e-mail clients, such as Microsoft Outlook, Windows' default mail client, Thunderbird, etc. An eml file contains saved email messages either meant as backup or for sharing. |
 flv | An flv file extension is used for Flash video files. Flash videos is a type of multimedia format used commonly on web sites for various animations or object elements. Requires Adobe Flash Player. |
| gdoc | Files with gdoc extension are URL links to a document created in Google Drive. It is not the actual document, just link. You can download the document from Google Drive in more typical format, like docx or odt. |
Files with gif extension are one of the most common bitmap image file formats available on the Internet. Maximum number of colors is 256. This format supports also simple animations and is widely used for banners or fun animations. | |
| gsheet | Files with gsheet extension are URL links to a spreadsheet created in Google Drive. It is not the actual spreadsheet, just an URL link. You can download the spreadsheet from Google Drive in more typical format, like *.xlsx or *.ods. |
| gslides | Files with gslides file extension are URL links to a presentation created in Google Drive. It is not the actual presentation, just an URL link. You can download the presentation from Google Drive in more typical format, like PPTX or PDF. |
 htm | A htm file extension is used for web documents stored in HTML Hypertext Markup Language file format. HTML language provides a means to create structured documents by denoting structural semantics for text such as headings, paragraphs, lists, links, quotes and other items. Its the main language for writing web pages. A htm web page can be displayed in any Web browser. |
 html | Files with html file extension are web pages and documents written in the most common scripting language for internet - the Hypertext Markup Language. |
 js | Files with js extension can b commonly found as JavaScripts. Used to execute scripts on internet pages and such. |
| json | Files with json extension are typically found as special JavaScript object notation files, which are based on the ECMAScript programming language standard. |
 jsp | Files with jsp extension are server pages (servlets) in one of the versions of JSP, Jakarta or JavaServer format. |
| jws | Files with jws extension are mainly related to the Oracle WebLogic Server and used for its Java Web Services files. |
 mht | An mht file extension is associated with the Mime HTML files. MHTML is web archive format used to bind resources and HTML code into a single file. Used mainly on internet and openable with every web browser. |
 opml | Files with opml extension are written in the Outline Processor Markup Language. Used for numerous purposes, most notably in RSS environment. |
| part | Files with part extension are almost always partially downloaded files from internet. When the download is complete, the original extension is restored. Generally, until the download is finished, no data can be recovered from .part files. |
| partial | Files with partial extension is related to Microsoft Internet Explorer from version 9 and Microsoft Edge and used for incomplete downloads initiated through the browser. |
 php | Files with php extension can be commonly found as web pages, scripts written in PHP and processed server-side by PHP engine. PHP is a programming language that offers quick way to develop websites with dynamic content. |
Files with png extensions are commonly used for Portable Network Graphic files. PNG is a bitmap image mainly used on web pages. | |
| rss | RSS is an XML based text file format used by Really Simple Syndication or Rich Site Summary (RSS) service. RSS service is used by many websites to publish news to their users or to RSS news aggregators. Users can reed news by using services like Google Reader, Feedly or RSS feed reader software. |
 swf | Files with sw extension can be commonly found as Shockwave Flash movies in animated vector format, used mainly on Internet web sites. |
A torrent file extension is used for various files, which are used to download files through peer-to-peer network protocol called BitTorrent. These .torrent files can be opened in any BitTorrent client, which will then proceed to start the download using the information stored in them (such as hash, tracker etc.). | |
 webm | Files with webm extension are video files in Matroska WebM format. WebM file format is designed specially for web based on standard HTML5. Video streaming are compressed by VP8/VP9 video codec and audio streaming are compressed by OGG Vorbis audio cod |
| webp | Files with webp extension are images in image format developed by Google. Designed to improve the performance of web pages and make the web faster by reducing image file sizes. |
 xap | Files with xap file extension are mainly related to Windows Phone apps and Microsoft Silverlight installation resource files. Used for Silverlight apps. |
 xhtml | An xhtml file extension is associated with the Extensible HTML language used to extend HTML 4. An xhtml file stores document written in the XHTML. |
An xml file extension is commonly used for files written in Extensible Markup Language. An xml file is used in various areas of computer industry and many program languages are just derivatives of XML. These xml files can be opened and edited in any text editor or IDE. | |
 xsd | Files with xsd extension may be typically found as XML schema descriptions that define the structure, content and semantics of XML documents. |
 xsl | Files with xsl file extension can be usually found as style sheets saved in the eXtensible Style sheet Language for Transformations (XSLT). |
 xslt | An xslt file extension is related to the XSLT XML formatted document. |
This is a list of some the most common file types from this category and may change in time as the popularity and significance of some formats can change. Whole category of internet related files contains now 413 file types. Show all internet related files.
