PowerPoint files don't travel well.

• Fonts and layout drift from one machine to the next.
• It needs the app, often a paid one, just to open.
• A binary blob you can't read, diff, or version.
• Awkward to share as a plain link.

Portable where PowerPoint is fragile.

Agenda

Three minutes, three ideas.

• The idea: three layers compile to one file.
• On stage: every control, demonstrated live.
• Make it yours: themes, motion, a brand of your own.

Engine, theme, content. Never tangled.

1. Engine

   Scaling, navigation, presenter mode. Never touched.

2. Theme

   Colours, type, spacing, fonts. The whole look.

3. Content

   Your slides. One HTML file each.

Change one layer and the others don't move. Restyle a whole deck without touching a slide.

A slide is just markup.

<section class="slide">  <h2 class="title">Caching cut p99 by 40%.</h2>  <ul class="bullets">    <li>One idea per line.</li>  </ul>  <aside class="notes">What you say, not what they read.</aside></section>

One command inlines everything.

1. Sources

   Slides, theme, fonts and images, in plain files.

2. build.py

   Python standard library only.

3. index.html

   One file. Opens anywhere, forever.

No build server, no dependencies, no network. Double-click to open, email it, host it.

Present like you rehearsed.

• Press p to see your speaker notes. Only you see them.
• A timer and a wall clock, so you stay on time.
• A live preview of the next slide. Nothing surprises you.
• Press ? for every keyboard shortcut.

Windowed toolbar

Every slide ships its own controls.

Bottom-right in windowed mode. Click them, or press the matching key.

Mode switch

One key opens a presenter sidebar.

Press p. Notes, the timer and the next slide appear here, never on the screen behind you.

Presenter sidebar

The sidebar has its own toolkit.

Notes scroll themselves, text resizes for tired eyes, the timer resets in one click.

Full screen

Distraction-free for the room.

The rail and the chrome fade away. Only the slide stays, for a projector or a back row.

Reveal a point exactly when it lands.

• Add class="fragment" to any element.
• Each click brings the next one in, with the effect you pick.
• Or keep it on screen and highlight the words that matter on the click.
• The presenter view counts the steps for you.

Edit mode

Fix a typo without opening an editor.

Chrome, Edge, or another Chromium browser, never Safari or Firefox. Works on a deck already on disk, emailed copies included, not a hosted link.

Swap the whole look in one line.

{  "theme": "obsidian"}

From perfectly still to full show, in one word.

{  "motion": "lively"}

Built in

Charts, figures and icons, with no library.

The point

Own your slides. Don't rent them from an app that might not open them in ten years.