| name | github-release-poster |
| description | Generate professional dark-themed release announcement posters for GitHub releases. Use when the user wants to create a release poster, announcement image, changelog graphic, or visual summary for software releases. Triggers include "create release poster", "make announcement image", "generate release graphic", "版本发布海报", or when given a GitHub release URL with a request to visualize it. Automatically adapts to different categories, content lengths, and release note structures. |
GitHub Release Poster
Generate professional, dark-themed release announcement posters from GitHub release notes with automatic adaptation to varying content structures.
Workflow
1. Extract Release Information
Fetch the release notes from the GitHub URL:
result = webfetch(github_url, prompt="Extract complete release notes including all sections and bullet points")
Parse the extracted content to identify:
- Release version and title
- Release date (from GitHub, NOT current date)
- All content sections (Highlights, Features, Performance, etc.)
- Bullet points within each section
2. Analyze and Categorize Sections
For each section found in the release notes:
- Identify category type - Match section name to category styles (see
references/category-styles.md)
- Assign colors and icons - Use predefined mappings or generate new ones for unknown categories
- Process content - Keep original Chinese/English content, preserve technical terms
Common categories:
- Highlights / 核心亮点 → Gold color (#fbbf24), star icon
- Features / 新功能特性 → Green (#10b981), rocket icon
- Performance / 性能优化 → Blue (#3b82f6), speedometer icon
- Dependencies / 依赖更新 → Cyan (#06b6d4), package icon
- Breaking Changes / 重要变更 → Orange (#f59e0b), alert icon
- Known Issues / 已知问题 → Red accent, wrench+alert icon
For unknown categories: Generate appropriate styling by:
- Analyzing semantic meaning of the category name
- Selecting an unused accent color from the palette
- Creating an appropriate SVG icon using templates in
references/icon-generation.md
3. Generate HTML Poster
Create the poster using the template structure:
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<title>{project_name} {version} 正式发布</title>
<style>
body {
background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 50%, #0a0e27 100%);
}
.content-tray {
background: linear-gradient(180deg, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.75) 100%);
backdrop-filter: blur(30px);
box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6),
0 0 0 1px rgba(59, 130, 246, 0.25),
inset 0 2px 0 rgba(255, 255, 255, 0.1);
}
.block-{category} {
--accent-color: {color};
--glow-color: {color with alpha};
}
</style>
</head>
<body>
</body>
</html>
Key styling principles:
- Use Inter font family for clean, modern look
- Large, readable fonts (40px titles, 20px content)
- Compact spacing (20px-30px padding in content cards)
- Alternating layout with
nth-child(even) flex-direction reversal
- SVG icons at 180x180px with glow effects
- Consistent 4px top border accent on each card
4. Generate SVG Icons
For each category, create an appropriate SVG icon (see references/icon-generation.md for templates):
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
<defs>
<linearGradient id="grad-{name}">
<stop offset="0%" style="stop-color:{color1}"/>
<stop offset="100%" style="stop-color:{color2}"/>
</linearGradient>
</defs>
<g>
</g>
</svg>
Icon design principles:
- Use linear gradients matching category accent color
- Add subtle decorative elements (circles, sparkles)
- Keep design simple and recognizable
- Avoid blur filters (they cause rendering issues)
- Match the tech/modern aesthetic
5. Adapt to Content Variations
Different category counts: The timeline structure automatically adapts. Each category becomes a feature-block with alternating layout.
Variable content length:
- Short lists (1-4 items): Display normally
- Long lists (5+ items): Consider grouping or summarizing
- Very long content: May split into sub-sections
New/unknown categories:
- Analyze category name semantics
- Select appropriate icon type from
references/icon-generation.md
- Choose unused accent color from palette
- Generate consistent styling
Missing standard categories: Skill works with any combination of categories found in the release notes.
6. Correct Date Handling
CRITICAL: Always use the actual release date from GitHub, NOT the current date.
Extract date from GitHub release metadata or tag creation date. Format as YYYY年MM月DD日.
7. Output and Export
Save the complete HTML to /sessions/vigilant-trusting-galileo/mnt/outputs/{project}-{version}.html
Provide the computer:// link to user. User can:
- Open HTML directly in browser for best quality
- Use Chrome DevTools → "Capture full size screenshot" for PNG export
- Or use Claude in Chrome MCP for automated screenshots
Handling Special Cases
Mixed Language Content
Preserve original language mixing (Chinese titles, English technical terms). This is typical for Chinese software documentation.
Technical Terms
Keep code snippets, version numbers, technical abbreviations in original form (e.g., "W8A8-int8", "MoE", "310P").
Long Release Notes
For releases with 8+ categories, maintain the same structure. The alternating timeline layout handles any number of sections gracefully.
Ugly or Scary Icons
If default icon seems inappropriate:
- Bug/warning icons can look threatening → use gentler alternatives
- Bright red should be used sparingly for critical issues only
- Test icon aesthetic fit with the overall professional tech style
Resources
references/category-styles.md
Complete mapping of common release note categories to accent colors, gradients, and icon recommendations. Consult when styling categories.
references/icon-generation.md
SVG icon templates and generation patterns for creating new icons that match the poster's aesthetic. Use when encountering unknown categories.
Quality Standards
The final poster should:
- Use correct release date from GitHub (not today's date)
- Have all content from the release notes (no omissions)
- Display readable fonts (minimum 20px for body text)
- Use compact but not cramped spacing
- Feature professional, non-threatening iconography
- Maintain consistent dark tech aesthetic
- Provide direct computer:// link for user access
