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TUI presentation tool

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# Prezo

A TUI-based presentation tool for the terminal, built with [Textual](https://textual.textualize.io/).

Display presentations written in Markdown using conventions similar to those of [MARP](https://marp.app/) or [Deckset](https://www.deckset.com/).

## Features

- **Markdown presentations** - MARP/Deckset format with `---` slide separators
- **Column layouts** - Pandoc-style fenced divs for multi-column slides (`::: columns`)
- **Incremental lists** - Reveal list items one at a time (`-I` flag, like Pandoc)
- **Live reload** - Auto-refresh when file changes (1s polling)
- **Keyboard navigation** - Vim-style keys, arrow keys, and more
- **Slide overview** - Grid view for quick navigation (`o`)
- **Search** - Find slides by content (`/`)
- **Table of contents** - Navigate by headings (`t`)
- **Go to slide** - Jump to specific slide number (`:`)
- **Presenter notes** - Toggle notes panel (`p`)
- **Themes** - 6 color schemes (`T` to cycle): dark, light, dracula, solarized-dark, nord, gruvbox
- **Timer/Clock** - Elapsed time and countdown (`c`)
- **Edit slides** - Open in $EDITOR (`e`), saves back to source file
- **Export** - PDF, HTML, PNG, SVG formats with customizable themes and sizes
- **Image support** - Inline and background images with MARP layout directives (left/right/fit)
- **Native image viewing** - Press `i` for full-quality image display (iTerm2/Kitty protocols)
- **Blackout/Whiteout** - Blank screen modes (`b`/`w`)
- **Command palette** - Quick access to all commands (`Ctrl+P`)
- **Config file** - Customizable settings via `~/.config/prezo/config.toml`
- **Recent files** - Tracks recently opened presentations
- **Position memory** - Remembers last slide position per file

## Demo

[![asciicast](https://asciinema.org/a/0rRbYzbq7iyha2wLkN6o4OPcX.svg)](https://asciinema.org/a/0rRbYzbq7iyha2wLkN6o4OPcX)

## Installation

```bash
pip install prezo
```

Or with [uv](https://docs.astral.sh/uv/):

```bash
uv tool install prezo
```

## Usage

```bash
# View a presentation
prezo presentation.md

# Disable auto-reload
prezo --no-watch presentation.md

# Use custom config
prezo -c myconfig.toml presentation.md

# Set image rendering mode
prezo --image-mode ascii presentation.md   # Options: auto, kitty, sixel, iterm, ascii, none

# Incremental list reveal (reveal items one at a time)
prezo -I presentation.md

# Export to PDF
prezo -e pdf presentation.md

# Export with options
prezo -e pdf presentation.md --theme light --size 100x30 --no-chrome
```

## Keyboard Shortcuts

| Key | Action |
|-----|--------|
| `→` / `j` / `Space` | Next slide |
| `←` / `k` | Previous slide |
| `Home` / `g` | First slide |
| `End` / `G` | Last slide |
| `:` | Go to slide number |
| `/` | Search slides |
| `o` | Slide overview |
| `t` | Table of contents |
| `p` | Toggle notes panel |
| `c` | Cycle clock display |
| `s` | Start/stop timer |
| `T` | Cycle theme |
| `b` | Blackout screen |
| `w` | Whiteout screen |
| `i` | View image (native quality) |
| `e` | Edit in $EDITOR |
| `r` | Reload file |
| `Ctrl+P` | Command palette |
| `?` | Help |
| `q` | Quit |

## Presentation Format

Prezo supports standard Markdown with MARP/Deckset conventions:

```markdown
---
title: My Presentation
theme: default
---

# First Slide

Content here...

---

# Second Slide

- Bullet points
- Code blocks
- Tables

???
Presenter notes go here (after ???)

---

# Third Slide

::: columns
::: column
**Left Column**
- Point A
- Point B
:::

::: column
**Right Column**
- Point C
- Point D
:::
:::

---

# Fourth Slide

::: center
**Centered content**
:::
```

See the [Writing Presentations in Markdown](docs/tutorial.md) tutorial for a complete guide on creating presentations, including column layouts, images, presenter notes, and configuration directives.

## Themes

Available themes: `dark`, `light`, `dracula`, `solarized-dark`, `nord`, `gruvbox`

Press `T` to cycle through themes during presentation.

## Export Options

Prezo supports multiple export formats: PDF, HTML, PNG, and SVG.

```bash
# PDF export
prezo -e pdf presentation.md                    # Default: 80x24, dark theme
prezo -e pdf presentation.md --theme light      # Light theme (for printing)
prezo -e pdf presentation.md --size 100x30      # Custom dimensions
prezo -e pdf presentation.md --no-chrome        # No window decorations
prezo -e pdf presentation.md -o slides.pdf      # Custom output path

# HTML export (single self-contained file)
prezo -e html presentation.md

# Image export (PNG/SVG)
prezo -e png presentation.md                    # All slides as PNG
prezo -e png presentation.md --slide 3          # Single slide (1-indexed)
prezo -e svg presentation.md --scale 2.0        # SVG with scale factor
```

PDF/PNG/SVG export requires optional dependencies:

```bash
pip install prezo[export]
# or
pip install cairosvg pypdf
```

## Development

```bash
# Clone and install
git clone https://github.com/user/prezo.git
cd prezo
uv sync

# Run
uv run prezo presentation.md

# Run tests
uv run pytest

# Lint
uv run ruff check .
uv run ruff format .
```

## License

MIT

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