Online Viewer¶

Try the presentation engine directly in your browser without installing anything.

Open the Viewer

How to use¶

The viewer offers three ways to load a presentation:

Paste JSON¶

Open the viewer link above
Click the Paste JSON tab
Paste your presentation JSON into the textarea
Click Present

This is the fastest way to preview a deck. Works on any device with a modern browser.

Upload a JSON file¶

Click the JSON File tab
Click Upload JSON File and pick a .json file from your machine
The presentation renders immediately

Upload a folder¶

Click the Folder tab
Click Choose Deck Folder and pick the folder containing your JSON and assets
Relative image paths (./images/photo.png) are resolved against the selected folder

Image paths in hosted mode

When using Paste JSON or JSON File mode, relative image paths like ./images/photo.png will not resolve because the viewer has no access to your local filesystem. Use absolute URLs (e.g., https://example.com/photo.png) for images, or use the Folder upload mode which imports assets alongside the JSON.

Minimal test deck¶

Copy and paste this into the viewer to verify it works:

{
  "presentation": {
    "metadata": { "title": "Quick Test", "theme": "default" },
    "slides": [
      {
        "id": "s1",
        "layout": "title",
        "elements": [
          {
            "type": "text",
            "content": "# It works!",
            "style": { "fontSize": "xxl", "alignment": "center" },
            "position": { "area": "center" }
          }
        ]
      }
    ]
  }
}

Keyboard shortcuts¶

Once a presentation is rendered:

Arrow keys / Space: navigate slides
Escape: overview mode
S: presenter notes
F: fullscreen