name: marp-slide
description: Create professional Marp presentation slides with 7 beautiful themes (default, minimal, colorful, dark, gradient, tech, business). Use when users request slide creation, presentations, or Marp documents. Supports custom themes, image layouts, and "make it look good" requests with automatic quality improvements.

Marp Slide Creator

Create professional, visually appealing Marp presentation slides with 7 pre-designed themes and built-in best practices.

When to Use This Skill

Use this skill when the user:
- Requests to create presentation slides or Marp documents
- Asks to "make slides look good" or "improve slide design"
- Provides vague instructions like "良い感じにして" (make it nice) or "かっこよく" (make it cool)
- Wants to create lecture or seminar materials
- Needs bullet-point focused slides with occasional images

Quick Start

Step 1: Select Theme

First, determine the appropriate theme based on the user's request and content.

Quick theme selection:
- Technical/Developer content → tech theme
- Business/Corporate → business theme
- Creative/Event → colorful or gradient theme
- Academic/Simple → minimal theme
- General/Unsure → default theme
- Dark background preferred → dark or tech theme

For detailed theme selection guidance, read references/theme-selection.md.

Step 2: Create Slides

1. Read relevant references first:
2. Always start by reading references/marp-syntax.md for basic syntax
3. For images: references/image-patterns.md (official Marpit image syntax)
4. For advanced features (math, emoji): references/advanced-features.md

5. For custom themes: references/theme-css-guide.md

6. Copy content from the appropriate template file:

7. assets/template-basic.md - Default theme (most common)
8. assets/template-minimal.md - Minimal theme
9. assets/template-colorful.md - Colorful theme
10. assets/template-dark.md - Dark mode theme
11. assets/template-gradient.md - Gradient theme
12. assets/template-tech.md - Tech/code theme

13. assets/template-business.md - Business theme

14. Read references/best-practices.md for quality guidelines

15. Structure content following best practices:

16. Title slide with <!-- _class: lead -->
17. Concise h2 titles (5-7 characters in Japanese)
18. 3-5 bullet points per slide

19. Adequate whitespace

20. Add images if needed using patterns from references/image-patterns.md

21. Save to /mnt/user-data/outputs/ with .md extension

Available Themes

1. Default Theme

Colors: Beige background, navy text, blue headings
Style: Clean, sophisticated with decorative lines
Use for: General seminars, lectures, presentations
Template: template-basic.md

2. Minimal Theme

Colors: White background, gray text, black headings
Style: Minimal decoration, wide margins, light fonts
Use for: Content-focused presentations, academic talks
Template: template-minimal.md

3. Colorful & Pop Theme

Colors: Pink gradient background, multi-color accents
Style: Vibrant gradients, bold fonts, rainbow accents
Use for: Youth-oriented events, creative projects
Template: template-colorful.md

4. Dark Mode Theme

Colors: Black background, cyan/purple accents
Style: Dark theme with glow effects, eye-friendly
Use for: Tech presentations, evening talks, modern look
Template: template-dark.md

5. Gradient Background Theme

Colors: Purple/pink/blue/green gradients (varies per slide)
Style: Different gradient per slide, white text, shadows
Use for: Visual-focused, creative presentations
Template: template-gradient.md

6. Tech/Code Theme

Colors: GitHub-style dark background, blue/green accents
Style: Code fonts, Markdown-style headers with # symbols
Use for: Programming tutorials, tech meetups, developer content
Template: template-tech.md

7. Business Theme

Colors: White background, navy headings, blue accents
Style: Corporate presentation style, top border, table support
Use for: Business presentations, proposals, reports
Template: template-business.md

Creating Slides Process

Basic Workflow

1. Understand requirements
2. Identify content: title, topics, key points
3. Determine target audience

4. Assess formality level

5. Select theme

6. Use quick selection rules above
7. If uncertain, consult references/theme-selection.md

8. Default to default theme if still unsure

9. Apply template

10. Load appropriate template from assets/
11. CSS is already embedded - no external files needed

12. Maintain template structure

13. Structure content

14. Title slide: <!-- _class: lead --> + h1
15. Content slides: h2 title + bullet points
16. Keep titles to 5-7 characters (Japanese)

17. Use 3-5 bullet points per slide

18. Refine quality

19. Read references/best-practices.md
20. Ensure adequate whitespace
21. Maintain consistency

22. Keep text concise (15-25 chars per line)

23. Add images

24. If needed, consult references/image-patterns.md
25. Common: ![bg right:40%](image.png) for side images

26. Use proper Marp image syntax

27. Output file

28. Save to /mnt/user-data/outputs/
29. Use descriptive filename like presentation.md

Handling "Make It Look Good" Requests

When users give vague instructions like "良い感じにして", "かっこよく", or "make it cool":

1. Infer theme from content:
2. Business content → business theme
3. Technical content → tech or dark theme
4. Creative content → gradient or colorful theme

5. General → default theme

6. Apply best practices automatically:

7. Shorten titles to 5-7 characters
8. Limit bullet points to 3-5 items
9. Add adequate whitespace

10. Use consistent structure

11. Enhance visual hierarchy:

12. Use h3 for sub-sections when appropriate
13. Break up dense text into multiple slides

14. Ensure logical flow (intro → body → conclusion)

15. Maintain professional tone:

16. Match formality to content
17. Use parallel structure in lists
18. Keep technical terms consistent

Image Integration

For slides with images, consult references/image-patterns.md for detailed syntax.

Common patterns:
- Side image: ![bg right:40%](image.png) - Image on right, text on left
- Centered: ![w:600px](image.png) - Centered with specific width
- Full background: ![bg](image.png) - Full-screen background
- Multiple images: Multiple ![bg] declarations

Example lecture pattern:

## Slide Title

![bg right:40%](diagram.png)

- Explanation point 1
- Explanation point 2
- Explanation point 3

File Output

Always save the final Marp file to /mnt/user-data/outputs/ with .md extension:
- presentation.md
- seminar-slides.md
- lecture-materials.md

Quality Checklist

Before delivering slides, verify:
- [ ] Theme selected appropriately for content
- [ ] CSS theme is embedded in the file
- [ ] Title slide uses <!-- _class: lead -->
- [ ] All h2 titles are concise (5-7 chars)
- [ ] Bullet points are 3-5 items per slide
- [ ] Images use proper Marp syntax
- [ ] File saved to outputs directory
- [ ] Content follows best practices

References

Core Documentation

• Marp syntax: references/marp-syntax.md - Basic Marp/Marpit syntax (directives, frontmatter, pagination, etc.)
• Image patterns: references/image-patterns.md - Official image syntax (bg, filters, split backgrounds)
• Theme CSS guide: references/theme-css-guide.md - How to create custom themes based on Marpit specification
• Advanced features: references/advanced-features.md - Math, emoji, fragmented lists, Marp CLI, VS Code
• Official themes: references/official-themes.md - default, gaia, uncover themes documentation

Quality & Selection Guides

• Theme selection: references/theme-selection.md - How to choose the right theme for content
• Best practices: references/best-practices.md - Quality guidelines for "cool" slides

Templates & Assets

• Templates: assets/template-*.md - Starting points with embedded CSS for each theme (7 themes)
• Standalone CSS: assets/theme-*.css - CSS files for reference (already embedded in templates)

Official External Links

• Marp Official Site: https://marp.app/
• Marpit Directives: https://marpit.marp.app/directives
• Marpit Image Syntax: https://marpit.marp.app/image-syntax
• Marpit Theme CSS: https://marpit.marp.app/theme-css
• Marp Core GitHub: https://github.com/marp-team/marp-core
• Marp CLI GitHub: https://github.com/marp-team/marp-cli