Slides: 0
AI: —

Content

Synced with the Style tab.
Selected model: —
For best deck quality, Opus 4.6 or GPT 5.5 and above are recommended.
Uses Office-safe fonts and simpler effects so editable PPTX export stays closer to the HTML preview.
Visual content options
Force or avoid specific element types.
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Generating…
✦
Click “Create” to generate your HTML presentation.
First configure the AI in the Settings tab.

Source

Selected model: —
The AI turns this into slide-level messages and recommended slide types. You can edit everything before slide generation.

Plan settings

Outline No plan yet
Building plan…
◇
Generate a detailed outline, then edit the slide messages, content and layout before creating the deck.
Create becomes available once the outline contains at least one slide.

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…
⇩
Choose an HTML or PPTX file and import it to preview the deck here.

Style

The style sets the colors, fonts and layout of generated slides, and can be applied live to the current deck.

1 · Active style

This is the style Create uses. If a deck is open, changing it updates the preview immediately.

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

2 · Build a new custom style

Any method below creates a new custom style entry, selects it, and applies it to Create. Existing styles are kept.

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

Rename the selected custom style, then export its reusable .json file.

4 · Import existing style JSON

Load a style previously saved from DeckSeeder.

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Live style preview
◐
Create or import a deck, then change the style on the left to preview it here.
Slides
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Reorder
Edit
AI
Slide
…
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.

Shrinks or nudges overflowing text/blocks when the review detects content beyond the slide edges.

Standalone HTML

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

Project (.json)

The current project is auto-saved in this browser every 30 seconds. JSON Save includes slides, styles, Create options, prompt overrides and the prompts used to generate or edit the deck. API keys are not exported.

Export activity
No export running.
Current slide
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Waiting for export
The slide being exported will appear here.
Exporting…
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

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.

Edit slide HTML