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name: article-cover description: Generate professional article cover images as SVG files. Use when user wants to create cover/banner images for blog posts, technical articles, or documentation. Creates visually appealing covers with titles, diagrams, and tech-themed graphics.

Article Cover SVG Generation

Generate professional, visually striking article cover images in SVG format for technical blogs, documentation, and articles.

Critical Rules

1. ViewBox Standard: Use viewBox="0 0 1200 630" (social media friendly 1.91:1 ratio)

2. Text Readability (MUST follow):

   • Main title: 44-48px, bold, high contrast
   • Subtitle: 28-32px, white or light color
   • Labels/tags: 14-16px
   • Never use fonts smaller than 11px

3. Background Design:

   • Always use gradient backgrounds (avoid flat solid colors)
   • Dark tech themes: #0d1117 → #161b22 (GitHub dark style)
   • Add subtle grid patterns or decorative elements for depth

4. Visual Hierarchy:

   • Title area: bottom 1/3 of the image (y: 420-540)
   • Diagram/illustration area: top 2/3 (y: 80-400)
   • Tags/labels: bottom edge (y: 550-600)

5. Color Contrast: Ensure text is readable against backgrounds

   • Light text on dark backgrounds
   • Use gradients for emphasis (orange/yellow for tech, blue/cyan for data)

Design Patterns

Tech Article Cover (Comparison Layout)

Best for: Performance comparisons, version upgrades, before/after scenarios

Copy┌─────────────────────────────────────────────────┐
│  [Logo]                           [Badge: 100x+]│
│                                                 │
│  ┌─────────┐    VS    ┌─────────┐    ┌────────┐│
│  │ Before  │  ────►   │ Middle  │ ►  │ After  ││
│  │  ❌     │          │   ⚠     │    │   ✓    ││
│  └─────────┘          └─────────┘    └────────┘│
│                                                 │
│         Main Title (Large, Gradient)            │
│           Subtitle (Medium, White)              │
│                                                 │
│    [Tag1]  [Tag2]  [Tag3]  [Tag4]  [Tag5]      │
└─────────────────────────────────────────────────┘

Tech Article Cover (Flow Layout)

Best for: Process explanations, architecture overviews

Copy┌─────────────────────────────────────────────────┐
│  [Logo]                                         │
│                                                 │
│  [Input] ──► [Process Box] ──► [Output]         │
│     │            │                │             │
│     └────────────┴────────────────┘             │
│                                                 │
│         Main Title (Large, Gradient)            │
│           Subtitle (Medium, White)              │
│                                                 │
│    [Tag1]  [Tag2]  [Tag3]  [Tag4]              │
└─────────────────────────────────────────────────┘

Color System

SVG Template

Copy<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 630">
  <defs>
    <!-- Background gradient -->
    <linearGradient id="bgGradient" x1="0%" y1="0%" x2="100%" y2="100%">
      <stop offset="0%" style="stop-color:#0d1117"/>
      <stop offset="100%" style="stop-color:#161b22"/>
    </linearGradient>
    <!-- Title gradient (orange/yellow for tech) -->
    <linearGradient id="titleGradient" x1="0%" y1="0%" x2="100%" y2="0%">
      <stop offset="0%" style="stop-color:#ff6b35"/>
      <stop offset="100%" style="stop-color:#ffcc02"/>
    </linearGradient>
    <!-- Glow effect for emphasis -->
    <filter id="glow">
      <feGaussianBlur stdDeviation="2" result="coloredBlur"/>
      <feMerge>
        <feMergeNode in="coloredBlur"/>
        <feMergeNode in="SourceGraphic"/>
      </feMerge>
    </filter>
  </defs>

  <!-- Background -->
  <rect width="1200" height="630" fill="url(#bgGradient)"/>

  <!-- Top accent bar -->
  <rect x="0" y="0" width="1200" height="5" fill="url(#titleGradient)"/>

  <!-- Logo area (top-left) -->
  <g transform="translate(50, 30)">
    <!-- Logo elements here -->
  </g>

  <!-- Main illustration area (center) -->
  <g transform="translate(600, 220)">
    <!-- Diagram/comparison elements here -->
  </g>

  <!-- Main title -->
  <text x="600" y="450" fill="url(#titleGradient)"
        font-family="Arial, sans-serif" font-size="46"
        text-anchor="middle" font-weight="bold">
    Article Title Here
  </text>

  <!-- Subtitle -->
  <text x="600" y="510" fill="#fff"
        font-family="Arial, sans-serif" font-size="28"
        text-anchor="middle">
    Subtitle or Description
  </text>

  <!-- Bottom tags -->
  <g transform="translate(600, 580)">
    <!-- Tag pills here -->
  </g>
</svg>

Element Templates

Comparison Box (with status icon)

Copy<g transform="translate(X, Y)">
  <rect x="0" y="0" width="300" height="180" rx="10"
        fill="#1c2128" stroke="#COLOR" stroke-width="2"/>
  <text x="150" y="30" fill="#COLOR" font-size="17"
        text-anchor="middle" font-weight="bold">ICON Title</text>
  <!-- Content here -->
</g>

Status icons: ❌ (negative), ⚠ (warning), ✓ (positive)

Performance Badge

Copy<g transform="translate(X, Y)">
  <rect x="-60" y="-25" width="140" height="50" rx="25"
        fill="#00f2fe" opacity="0.15" stroke="#00f2fe" stroke-width="2"/>
  <text x="10" y="8" fill="#00f2fe" font-size="28"
        text-anchor="middle" font-weight="bold">100x+</text>
</g>

Tag Pill

Copy<rect x="X" y="-22" width="100" height="36" rx="18"
      fill="transparent" stroke="#COLOR" stroke-width="2"/>
<text x="X+50" y="4" fill="#COLOR" font-size="14"
      text-anchor="middle" font-weight="bold">TagName</text>

Arrow (with label)

Copy<g transform="translate(X, Y)">
  <path d="M 0 0 L 35 0" stroke="#COLOR" stroke-width="3" fill="none"/>
  <polygon points="35,0 25,-6 25,6" fill="#COLOR"/>
</g>

Data Bar (for showing proportions)

Copy<rect x="X" y="Y" width="WIDTH" height="12" rx="2"
      fill="#COLOR" opacity="0.8"/>

Workflow

1. Understand the article: What's the main topic? Is it a comparison, tutorial, or overview?

2. Choose layout pattern:

   • Comparison → Use 2-3 column comparison layout
   • Process/Flow → Use flow diagram layout
   • Single concept → Use centered illustration

3. Extract key elements:

   • Main title (keep concise, 10-15 Chinese chars or 5-8 English words)
   • Subtitle (descriptive, can be longer)
   • Key metrics (performance numbers, version info)
   • Tags (3-5 relevant keywords)

4. Design the illustration:

   • Use simple shapes (rectangles, arrows)
   • Show the core concept visually
   • Use color to differentiate states/versions

5. Generate SVG: Follow the template, ensure all text is readable

Output

• Filename: {article-slug}-cover.svg
• Location: Same directory as the article or assets/ folder
• Tell user: Can be opened in browser, converted to PNG via Inkscape/browser screenshot

Tips

• Chinese text: Use font-family="Arial, sans-serif" which has good CJK support
• Emphasis: Use filter="url(#glow)" sparingly on key elements
• Spacing: Keep 20-40px padding around text elements
• Testing: Open SVG in browser to verify rendering before finalizing