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| Name | PPTX | HTML |
| Full name | PPTX - Office Open XML Presentation | HTML - Hypertext Markup Language |
| File extension | .pptx, .pptm | .html, .htm |
| MIME type | application/vnd.-openxmlformats-officedocument.-presentationml.-presentation | text/html |
| Developed by | Microsoft | W3C & WHATWG |
| Type of format | Presentation | Document file format |
| Description | The Office Open XML file formats are a set of file formats that can be used to represent electronic office documents. There are formats for word processing documents, spreadsheets and presentations as well as specific formats for material such as mathematical formulae, graphics, bibliographies etc. | HyperText Markup Language, commonly referred to as HTML, is the standard markup language used to create web pages. Along with CSS, and JavaScript, HTML is a cornerstone technology, used by most websites to create visually engaging web pages, user interfaces for web applications, and user interfaces for many mobile applications. |
| Technical details | The Office Open XML file formats are a set of file formats that can be used to represent electronic office documents. There are formats for word processing documents, spreadsheets and presentations as well as specific formats for material such as mathematical formulae, graphics, bibliographies etc. | HTML elements form the building blocks of all websites. HTML allows images and objects to be embedded and can be used to create interactive forms. It provides a means to create structured documents by denoting structural semantics for text such as headings, paragraphs, lists, links, quotes and other items. |
| Associated programs | Microsoft Office, LibreOffice, Kingsoft Office, Google Docs. | Mozilla Firefox, Opera, Google Chrome, Internet Explorer. |
| Wiki | https://en.wikipedia.org/wiki/Office_Open_XML_file_formats | https://en.wikipedia.org/wiki/HTML |