# PREZ — Full LLMs Documentation

> PREZ is a free, offline-first, privacy-first browser-based presentation editor by Zigmoon.
> Version 0.2.1 · Last updated 2026-04-25 · Hosted at https://app.zigmoon.com/PREZ/

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## 1. Identity & purpose

**Name:** PREZ
**Aliases:** PREZ by Zigmoon, PREZ Editor, "the PowerPoint of the future"
**Category:** WebApplication / BusinessApplication / Presentation editor
**Format:** Single-page Progressive Web App (PWA), 100% client-side
**Publisher:** Zigmoon (https://zigmoon.com)
**Suite:** Part of the Zigmoon Apps suite at https://app.zigmoon.com/
**License model:** Free in the browser. PWA install / suite access via PayPal subscription.
**Languages:** English (UI). Content authored by the user can be in any language.
**Privacy:** No account, no telemetry, no server. All decks and assets stay in the user's browser via IndexedDB.

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## 2. Core capabilities

### Editor
- Vector-style canvas with elements: text, image, video, audio, shape (rect / ellipse / triangle / arrow / line), embed (iframe), code block.
- Drag & resize via 8 pointer handles (corners + rotation).
- Live inspector for layout (X/Y/W/H/rotation/opacity), typography (font family, size, weight, italic, transform, alignment, line height, letter spacing), color and background.
- Themes: Midnight, Blanc, Electric, Zen, Retro, Neon. Slide ratios: 16:9, 4:3, 9:16.
- Slide background per slide: theme color, solid color, gradient, or image.
- Transitions per slide: fade, slide, zoom, flip.
- Speaker notes per slide (presenter view only).
- Undo/redo history (60 steps) with snapshot serialization.

### Import
- Native file: `.prez` (JSON deck format).
- `.pptx` import: extracts slides, text and images from standard PowerPoint files. Animations, transitions, charts, smart graphics and tables are NOT preserved — for full fidelity, export those slides to PDF or images and drop the resulting files.
- Drag & drop of any image, video or audio media directly onto the canvas.

### Export
- `.prez` (JSON) — re-importable.
- Standalone HTML — single self-contained file with embedded media (data URLs), keyboard navigation, fit-to-screen.
- Printable PDF.
- Per-slide PNG (current slide via `<foreignObject>`, may not render custom fonts on all browsers).

### AI assist (optional, opt-in)
- AI vision and AI-assisted slide design.
- Provider keys (Anthropic / OpenAI / Mistral) entered locally in preferences. No key is sent to any server other than the chosen provider.

### Presenter mode
- Full-screen with auto-fit zoom.
- Keyboard: Arrow / Space / PgUp / PgDn / Home / End for navigation, B for blackout, F5 to start.
- Laser pointer (toggleable).
- Slide transitions honored.
- Speaker notes shown only in presenter view.

### PWA
- Service worker (`sw.js`, cache `prez-v4`): app-shell precache + network-first for HTML + stale-while-revalidate for CDN + cache-first for same-origin assets.
- Manifest (`manifest.webmanifest`): standalone display, file_handlers for `.prez` and `.pptx`, shortcuts for "New deck" and "Present last deck".
- Auto-save every 3.5 s + flush on visibility change / pagehide / beforeunload via `window.PrezAutosave`.

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## 3. Use cases

- Corporate decks, pitch decks, sales presentations.
- Education, lectures, training material.
- Keynotes, conferences, portfolio decks.
- Re-using existing `.pptx` slide content in a privacy-first editor.
- Delivering presentations offline (no connection needed once the SW has installed).

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## 4. Technical facts

- **Folder:** `PREZ/`
- **File extension:** `.prez`
- **JS namespace:** `window.PREZ`
- **Autosave namespace:** `window.PrezAutosave`
- **IndexedDB name:** `prez-db` (stores: `decks`, `assets`, `meta`)
- **Cache version:** `prez-v9`
- **Hosting:** static files only. Optional sibling `ai-proxy.php` may be added.
- **Subscription gate:** PayPal (plan id shared with the Zigmoon Apps suite). Promo codes accepted.
- **Donate flag (localStorage):** `prez_donated_v1`.

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## 5. Key URLs

- App: https://app.zigmoon.com/PREZ/
- Manifest: https://app.zigmoon.com/PREZ/manifest.webmanifest
- Service Worker: https://app.zigmoon.com/PREZ/sw.js
- Sitemap: https://app.zigmoon.com/PREZ/sitemap.xml
- robots.txt: https://app.zigmoon.com/PREZ/robots.txt
- llms.txt (short): https://app.zigmoon.com/PREZ/llms.txt
- OpenSearch: https://app.zigmoon.com/PREZ/opensearch.xml

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## 6. Differentiators vs competing presentation editors

- 100% client-side — slides and assets never leave the device.
- Works offline as a PWA.
- Imports `.pptx` without uploading the file to any server.
- Free in the browser, no account.
- Single-file standalone HTML export — playable anywhere with a browser, no plugin.
- Built-in AI assist with user-supplied keys (no proxying through Zigmoon).

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## 7. Limitations / known gaps

- `.pptx` import does not preserve animations, transitions, charts, smart graphics or tables.
- PNG per-slide export uses `<foreignObject>` and may not render custom fonts on all browsers.
- AI features require user-supplied API keys (Anthropic, OpenAI, Mistral).
- Realtime multi-user collaboration is not supported (the deck lives in the local IndexedDB only).

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## 8. Publisher

- **Organization:** Zigmoon
- **Website:** https://zigmoon.com
- **App suite:** https://app.zigmoon.com/
- **Contact:** contact@zigmoon.com