Show HN: DeckBuilder Single-file HTML slide editor (750KB, no build step)

I built this because I got tired of the LLM-to-PowerPoint friction.

The workflow: Ask Claude/GPT to generate slides in HTML -> Paste into DeckBuilder -> Drag/drop to fix layout -> Export PDF.

Why single-file HTML?

No install, runs in browser

Works offline & Local-first

Git-friendly (clean HTML/CSS diffs)

~750KB total payload

The AI does the drafting; this gives you the finishing control locally.

Feedback welcome, particularly on the drag-and-drop feel and how the PDF export handles complex layouts!