Slides: 0
AI: —

Content

Synced with the Template tab.
Selected model: —
For best deck quality, Opus 4.6 or GPT 5.5 and above are recommended.
Visual content options
Force or avoid specific element types.
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Generating…
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Click “Create” to generate your HTML presentation.
First configure the AI in the Settings tab.

Import HTML / PPTX

Turn an existing HTML or PowerPoint file into editable HTML slides — either parsed as-is, or rebuilt by AI to export cleanly.

1 · Choose a file

No file selected.

2 · Choose an import mode

A · Deterministic (no AI)

Parses the file directly. HTML must contain <section class="slide">…</section>. PPTX slides are reconstructed as editable positioned HTML objects.

B · Convert with AI

Rebuilds the content as clean slides using the same rules as Create (design system + PPTX-safe), so it exports well. Works on HTML or PPTX. The number of slides is chosen by the AI to fit the content.

Off → rebuilds in the active Style instead.
Example: “Put the 3 key metrics on a dedicated KPI slide, and add a closing recommendations slide.”
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Imported deck Use ← → ↑ ↓ to flip slides
Importing…
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Choose an HTML or PPTX file and import it to preview the deck here.

Style

The style sets the colors, fonts and layout of every generated slide. Pick a built-in style, or build your own custom style below.

1 · Active style

This is the style Create uses. Custom styles you build appear here too.

No custom style. A built-in style is active.

2 · Build a new custom style

Any method below creates a “Custom” entry, selects it, and applies it to Create. Pick one:

A · From a text description (AI)
B · From a CSS file or URL

Reuse an existing CSS design system (e.g. wavestonedesign.css). Its classes are reused by the AI.

C · From a PowerPoint (.pptx)

Extracts the theme’s accent colors, background and fonts to build a matching style.

3 · Name, save & share

Name your custom style, then save it. Saving adds it to the dropdown and exports the reusable .json file at the same time.

4 · Import existing style JSON

Load a style previously saved from DeckSeeder.

Slides
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AI
Slide
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No slides. Generate some in “Create” or add one (＋).

Export

Convert your HTML deck to editable PowerPoint with the integrated browser export engine.

Editable PPTX

Quality export engine — integrated browser pipeline with dedicated HTML preparation, PowerPoint-safe styles, image handling, and layout validation.

Standalone HTML

Single HTML file for playback: keyboard navigation, thumbnails and fullscreen. PPTX export stays in DeckSeeder so PowerPoint output remains editable.

Project (.json)

Export activity
No export running.
Current slide Waiting for export
The slide being exported will appear here.
Export logs and progress will appear here. PPTX export continues when optional cleanup steps fail.

AI settings

Configure the LLM provider. Keys stay in your browser (localStorage).

AI authorization and confidentiality For confidentiality reasons, use of AI and the selected provider must be explicitly approved by the organization for which the deck is produced.

Provider

Copy/save the API key first; the model list can only be refreshed and selected reliably after a key is available.
Idle

Master prompts

Import, export or restore the system prompt overrides used by generation, AI import, retouching, slide creation and theme analysis.

About

100% local app for drafting 1280×720 HTML slide decks in the browser, then exporting them to PPTX or standalone HTML.

License

Copyright Wavestone / Gérôme BILLOIS. Non-commercial use only unless explicitly authorized in writing. This code and its generated application structure must not be reused, redistributed, or embedded elsewhere for commercial purposes without prior authorization.

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