| Opera Show Format | |
|---|---|
| Filename extension | .xhtml, .html |
| Internet media type | application/xhtml+xml text/html |
| Developed by | Opera Software |
| Type of format | Presentation program |
| Extended from | XHTML 1.0 Strict |
| Extended to | S5 (file format) |
| Website | Creating presentations/slideshows with HTML & CSS |
TheOpera Show Format (OSF) is a set of conventions used in a web page usingXHTML 1.0 Strict andCSS 2.1.[1][2] It is designed to allowpresentations to be easily created with web authoring tools.[3][4][5] OSF requires that a number of meta tags be present, includingversion,generator,author, andpresdate (the creation or presentation date). The entire presentation, including all slides and images (indata: URIs) is contained in a single file. The look of all slides is controlled by the layout section, contained in a<div>HTML element. The slides themselves are contained in a presentation section contained in a<div> element. Each slide is contained in a<div> element.
The Slide Show (S9) Ruby gem creates OSF-compatible presentations using awiki-style markup language.[6] Other tools include theWindows-based QuickShow,[7] and the Project Velt[8] Opera widget. Opera Software once provided an online OSF generator, which has since gone offline. An older version is available at the personal site of Opera Software'sCTO,Håkon Wium Lie.[9]
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