S5 (file format)

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Filename extension
.xhtml, .html
Internet media type
Developed byEric A. Meyer
Type of formatPresentation program
Extended fromOpera Show Format
Open format?Yes. Public Domain.[1]
WebsiteS5 homepage

S5 (Simple Standards-Based Slide Show System) is an XHTML-based file format for defining slideshows. It was created by Eric A. Meyer as an alternative to the browser-centric Opera Show Format. S5 is not a presentation program, but fulfills the same purpose in combination with a standards-compliant web browser.


The initial version of S5[1][2] was released by Eric Meyer on October 18, 2004 under a Creative Commons license.[3] With the release of version 1.1 on July 28, 2005, S5 was placed in the public domain.[1]

On July 17, 2006, Ryan King launched s5project.org, "a new community site, dedicated to the S5 Presentation software".[4][5][6][7]

On December 4, 2006, Andreas Gohr announced a DokuWiki plugin that converts Wiki markup to XHTML-compatible S5 presentations.[8]


The content of an S5 presentation can be stored in a single XHTML file. This file contains several slides which are structured in the following way:

<div class="slide">
 <h1>slide title</h1>
   <li>the first point</li>
   <li>the second point</li>
   <li>the third point</li>
 <div class="handout">
  ... additional material that appears
     on the handout

S5 presentations can be viewed in outline and slideshow mode; Cascading Style Sheets are used to define different layouts for outline, slideshow and print. Navigation controls, a dynamically generated list of slides and accesskeys allow browsing back and forth.

A more semantic version of the S5 format is based on the XOXO microformat and uses <li class="slide"> instead of divs for the slides, as well as <ol class="xoxo presentation"> instead of a div for the overall presentation.

See also[edit]


  1. ^ a b c Meyer, Eric (28 July 2005). "S5 1.1". Retrieved 17 August 2010.
  2. ^ Meyer, Eric (28 July 2005). "S5 1.0 Reference". Retrieved 17 August 2010.
  3. ^ Meyer, Eric (18 October 2004). "S5 1.0". Retrieved 17 August 2010.
  4. ^ Meyer, Eric (19 July 2006). "S5Project.org". Retrieved 17 August 2010.
  5. ^ King, Ryan (17 July 2006). "S5Project.org". Retrieved 17 August 2010.
  6. ^ King, Ryan (16 July 2006). "Announcing S5Project.org". Archived from the original on 16 May 2008. Retrieved 17 August 2010.
  7. ^ King, Ryan (26 July 2006). "What's new in S5?". Archived from the original on 24 May 2008. Retrieved 17 August 2010.
  8. ^ Gohr, Andreas (4 December 2006). "Presentations in DokuWiki". Retrieved 29 August 2010.

External links[edit]