Two editors for HTML slides
… and what makes people use HTML for slides for W3C events
Bert Bos <bert@w3.org>
W3C Breakouts Day 2026
Goals of this breakout
- Discuss how we get people to create slides in HTML for W3C events
-
Demonstrate and discuss two editors (under development) for HTML slides:
-
Markdown editor for b6+
(Markdown)

-
B6+ slide editor
(WYSIWYG)

Markdown slide editor for b6+
B6+ is Javascript for presenting slides. (Shower also works, but in this version, b6+ is hardcoded)
Features
- Markdown syntax for slides and notes
- Save to file, import/export Markdown, export HTML
- Preview
- Play slides directly from the editor
- Support for math
- Possibility to make editors with specific style sheets (URL params)
B6+ slide editor
Features
- WYSIWYG & source editor
-
Edit local or online slides (HTTP GET/PUT)
- Manuals for editor and for style sheet
- Text editor for CSS
- Structured editing (Esc key)
- Play the slide show directly from the editor
Some things still to do
- SVG images
- Publish to Solid pods
- Spell checker improvements
- Easy creation of
<figure>
- Change order of slides
- Find & replace
- Easy creation of built-up slides
- Undo across view changes
- More b6+ features (clock…)
- More style sheet features
- Use system password manager
- Feedback if waiting on network
- Print
- Better (built-in) Play function
- Better modal dialogs
- Catchy name?
What's missing?
- Other ways to publish?
- Editing of images? diagrams?
- Templates?
- …
How do people choose a slide editor?
… and thus: what should the b6+ slide editor offer?
- It is already on their computer
- It's what they always used
- It offers a certain feature (which?)
- It is compatible with / allows integration with something (what?)
- It is easy to use, has a good manual, support, help from colleagues
- Can reuse old slides
And for TPAC and the AC meeting
- What would make a slide editor especially useful for TPAC?
- And for other W3C events (workshops, member events…)?
Thank you!
(These slides were made with the b6+ slide editor)