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Baoyu Cover Image

jimliu/baoyu-skills
8.9k

This skill generates customizable, elegant cover images for articles using a variety of visual and stylistic options. It supports detailed configuration of dimensions, style presets, reference images, and content input to create images that match specific themes, moods, and content types. Designed for content creators and developers, it offers an automated workflow for analyzing input content and producing tailored cover images efficiently.

npx skills add https://github.com/jimliu/baoyu-skills --skill baoyu-cover-image

Cover Image Generator

Generate elegant cover images for articles with 5-dimensional customization.

Usage

# Auto-select dimensions based on content
/baoyu-cover-image path/to/article.md
# Quick mode: skip confirmation
/baoyu-cover-image article.md --quick
# Specify dimensions
/baoyu-cover-image article.md --type conceptual --palette warm --rendering flat-vector
# Style presets (shorthand for palette + rendering)
/baoyu-cover-image article.md --style blueprint
# With reference images
/baoyu-cover-image article.md --ref style-ref.png
# Direct content input
/baoyu-cover-image --palette mono --aspect 1:1 --quick
[paste content]

Options

Option Description --type <name> hero, conceptual, typography, metaphor, scene, minimal --palette <name> warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone --rendering <name> flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print --style <name> Preset shorthand (see Style Presets) --text <level> none, title-only, title-subtitle, text-rich --mood <level> subtle, balanced, bold --font <name> clean, handwritten, serif, display --aspect <ratio> 16:9 (default), 2.35:1, 4:3, 3:2, 1:1, 3:4 --lang <code> Title language (en, zh, ja, etc.) --no-title Alias for --text none --quick Skip confirmation, use auto-selection --ref <files...> Reference images for style/composition guidance

Five Dimensions

Dimension Values Default Type hero, conceptual, typography, metaphor, scene, minimal auto Palette warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone auto Rendering flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print auto Text none, title-only, title-subtitle, text-rich title-only Mood subtle, balanced, bold balanced Font clean, handwritten, serif, display clean Auto-selection rules: references/auto-selection.md

Galleries

Types: hero, conceptual, typography, metaphor, scene, minimal → Details: references/types.md Palettes: warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone → Details: references/palettes/ Renderings: flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print → Details: references/renderings/ Text Levels: none (pure visual) | title-only (default) | title-subtitle | text-rich (with tags) → Details: references/dimensions/text.md Mood Levels: subtle (low contrast) | balanced (default) | bold (high contrast) → Details: references/dimensions/mood.md Fonts: clean (sans-serif) | handwritten | serif | display (bold decorative) → Details: references/dimensions/font.md

File Structure

Output directory per default_output_dir preference:

  • same-dir: {article-dir}/
  • imgs-subdir: {article-dir}/imgs/
  • independent (default): cover-image/{topic-slug}/
<output-dir>/
├── source-{slug}.{ext}    # Source files
├── refs/                  # Reference images (if provided)
│   ├── ref-01-{slug}.{ext}
│   └── ref-01-{slug}.md   # Description file
├── prompts/cover.md       # Generation prompt
└── cover.png              # Output image

Slug: 2-4 words, kebab-case. Conflict: append -YYYYMMDD-HHMMSS

Workflow

Progress Checklist

Cover Image Progress:
- [ ] Step 0: Check preferences (EXTEND.md) ⛔ BLOCKING
- [ ] Step 1: Analyze content + save refs + determine output dir
- [ ] Step 2: Confirm options (6 dimensions) ⚠️ unless --quick
- [ ] Step 3: Create prompt
- [ ] Step 4: Generate image
- [ ] Step 5: Completion report

Flow

Input → [Step 0: Preferences] ─┬─ Found → Continue
                               └─ Not found → First-Time Setup ⛔ BLOCKING → Save EXTEND.md → Continue
        ↓
Analyze + Save Refs → [Output Dir] → [Confirm: 6 Dimensions] → Prompt → Generate → Complete
                                              ↓
                                     (skip if --quick or all specified)

Step 0: Load Preferences ⛔ BLOCKING

Check EXTEND.md existence (priority: project → user):

# macOS, Linux, WSL, Git Bash
test -f .baoyu-skills/baoyu-cover-image/EXTEND.md && echo "project"
test -f "${XDG_CONFIG_HOME:-$HOME/.config}/baoyu-skills/baoyu-cover-image/EXTEND.md" && echo "xdg"
test -f "$HOME/.baoyu-skills/baoyu-cover-image/EXTEND.md" && echo "user"

# PowerShell (Windows)
if (Test-Path .baoyu-skills/baoyu-cover-image/EXTEND.md) { "project" }
$xdg = if ($env:XDG_CONFIG_HOME) { $env:XDG_CONFIG_HOME } else { "$HOME/.config" }
if (Test-Path "$xdg/baoyu-skills/baoyu-cover-image/EXTEND.md") { "xdg" }
if (Test-Path "$HOME/.baoyu-skills/baoyu-cover-image/EXTEND.md") { "user" }

Result Action Found Load, display summary → Continue Not found ⛔ Run first-time setup (references/config/first-time-setup.md) → Save → Continue CRITICAL: If not found, complete setup BEFORE any other steps or questions.

Step 1: Analyze Content

  1. Save reference images (if provided) → references/workflow/reference-images.md
  2. Save source content (if pasted, save to source.md)
  3. Analyze content: topic, tone, keywords, visual metaphors
  4. Deep analyze references ⚠️: Extract specific, concrete elements (see reference-images.md)
  5. Detect language: Compare source, user input, EXTEND.md preference
  6. Determine output directory: Per File Structure rules

Step 2: Confirm Options ⚠️

Full confirmation flow: references/workflow/confirm-options.md Condition Skipped Still Asked --quick or quick_mode: true 6 dimensions Aspect ratio (unless --aspect) All 6 + --aspect specified All None

Step 3: Create Prompt

Save to prompts/cover.md. Template: references/workflow/prompt-template.md CRITICAL - References in Frontmatter:

  • Files saved to refs/ → Add to frontmatter references list
  • Style extracted verbally (no file) → Omit references, describe in body
  • Before writing → Verify: test -f refs/ref-NN-{slug}.{ext} Reference elements in body MUST be detailed, prefixed with "MUST"/"REQUIRED", with integration approach.

Step 4: Generate Image

  1. Backup existing cover.png if regenerating
  2. Check image generation skills; if multiple, ask preference
  3. Process references from prompt frontmatter:
    • direct usage → pass via --ref (use ref-capable backend)
    • style/palette → extract traits, append to prompt
  4. Generate: Call skill with prompt file, output path, aspect ratio
  5. On failure: auto-retry once

Step 5: Completion Report

Cover Generated!
Topic: [topic]
Type: [type] | Palette: [palette] | Rendering: [rendering]
Text: [text] | Mood: [mood] | Font: [font] | Aspect: [ratio]
Title: [title or "visual only"]
Language: [lang] | Watermark: [enabled/disabled]
References: [N images or "extracted style" or "none"]
Location: [directory path]
Files:
✓ source-{slug}.{ext}
✓ prompts/cover.md
✓ cover.png

Image Modification

Action Steps Regenerate Backup → Update prompt file FIRST → Regenerate Change dimension Backup → Confirm new value → Update prompt → Regenerate

Composition Principles

  • Whitespace: 40-60% breathing room
  • Visual anchor: Main element centered or offset left
  • Characters: Simplified silhouettes; NO realistic humans
  • Title: Use exact title from user/source; never invent

Extension Support

Custom configurations via EXTEND.md. See Step 0 for paths. Supports: Watermark | Preferred dimensions | Default aspect/output | Quick mode | Custom palettes | Language Schema: references/config/preferences-schema.md

References

Dimensions: text.md | mood.md | font.md Palettes: references/palettes/ Renderings: references/renderings/ Types: references/types.md Auto-Selection: references/auto-selection.md Style Presets: references/style-presets.md Compatibility: references/compatibility.md Visual Elements: references/visual-elements.md Workflow: confirm-options.md | prompt-template.md | reference-images.md Config: preferences-schema.md | first-time-setup.md | watermark-guide.md

GitHub Owner

Owner: jimliu

GitHub Links

Files

Style Presets

auto-selection.md

types.md

``

``

text.md

mood.md

font.md

first-time-setup.md

reference-images.md

confirm-options.md

prompt-template.md

preferences-schema.md

text.md

mood.md

font.md

``

``

types.md

auto-selection.md

style-presets.md

compatibility.md

visual-elements.md

confirm-options.md

prompt-template.md

reference-images.md

preferences-schema.md

first-time-setup.md

watermark-guide.md

SKILL.md

name: baoyu-cover-image description: Generates article cover images with 5 dimensions (type, palette, rendering, text, mood) combining 10 color palettes and 7 rendering styles. Supports cinematic (2.35:1), widescreen (16:9), and square (1:1) aspects. Use when user asks to "generate cover image", "create article cover", or "make cover". version: 1.56.1 metadata: openclaw: homepage: https://github.com/JimLiu/baoyu-skills#baoyu-cover-image

Cover Image Generator

Generate elegant cover images for articles with 5-dimensional customization.

Usage

# Auto-select dimensions based on content
/baoyu-cover-image path/to/article.md
# Quick mode: skip confirmation
/baoyu-cover-image article.md --quick
# Specify dimensions
/baoyu-cover-image article.md --type conceptual --palette warm --rendering flat-vector
# Style presets (shorthand for palette + rendering)
/baoyu-cover-image article.md --style blueprint
# With reference images
/baoyu-cover-image article.md --ref style-ref.png
# Direct content input
/baoyu-cover-image --palette mono --aspect 1:1 --quick
[paste content]

Options

OptionDescription
--type <name>hero, conceptual, typography, metaphor, scene, minimal
--palette <name>warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone
--rendering <name>flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print
--style <name>Preset shorthand (see Style Presets)
--text <level>none, title-only, title-subtitle, text-rich
--mood <level>subtle, balanced, bold
--font <name>clean, handwritten, serif, display
--aspect <ratio>16:9 (default), 2.35:1, 4:3, 3:2, 1:1, 3:4
--lang <code>Title language (en, zh, ja, etc.)
--no-titleAlias for --text none
--quickSkip confirmation, use auto-selection
--ref <files...>Reference images for style/composition guidance

Five Dimensions

DimensionValuesDefault
Typehero, conceptual, typography, metaphor, scene, minimalauto
Palettewarm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotoneauto
Renderingflat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-printauto
Textnone, title-only, title-subtitle, text-richtitle-only
Moodsubtle, balanced, boldbalanced
Fontclean, handwritten, serif, displayclean
Auto-selection rules: references/auto-selection.md

Galleries

Types: hero, conceptual, typography, metaphor, scene, minimal → Details: references/types.md Palettes: warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone → Details: references/palettes/ Renderings: flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print → Details: references/renderings/ Text Levels: none (pure visual) | title-only (default) | title-subtitle | text-rich (with tags) → Details: references/dimensions/text.md Mood Levels: subtle (low contrast) | balanced (default) | bold (high contrast) → Details: references/dimensions/mood.md Fonts: clean (sans-serif) | handwritten | serif | display (bold decorative) → Details: references/dimensions/font.md

File Structure

Output directory per default_output_dir preference:

  • same-dir: {article-dir}/
  • imgs-subdir: {article-dir}/imgs/
  • independent (default): cover-image/{topic-slug}/
<output-dir>/
├── source-{slug}.{ext}    # Source files
├── refs/                  # Reference images (if provided)
│   ├── ref-01-{slug}.{ext}
│   └── ref-01-{slug}.md   # Description file
├── prompts/cover.md       # Generation prompt
└── cover.png              # Output image

Slug: 2-4 words, kebab-case. Conflict: append -YYYYMMDD-HHMMSS

Workflow

Progress Checklist

Cover Image Progress:
- [ ] Step 0: Check preferences (EXTEND.md) ⛔ BLOCKING
- [ ] Step 1: Analyze content + save refs + determine output dir
- [ ] Step 2: Confirm options (6 dimensions) ⚠️ unless --quick
- [ ] Step 3: Create prompt
- [ ] Step 4: Generate image
- [ ] Step 5: Completion report

Flow

Input → [Step 0: Preferences] ─┬─ Found → Continue
                               └─ Not found → First-Time Setup ⛔ BLOCKING → Save EXTEND.md → Continue
        ↓
Analyze + Save Refs → [Output Dir] → [Confirm: 6 Dimensions] → Prompt → Generate → Complete
                                              ↓
                                     (skip if --quick or all specified)

Step 0: Load Preferences ⛔ BLOCKING

Check EXTEND.md existence (priority: project → user):

# macOS, Linux, WSL, Git Bash
test -f .baoyu-skills/baoyu-cover-image/EXTEND.md && echo "project"
test -f "${XDG_CONFIG_HOME:-$HOME/.config}/baoyu-skills/baoyu-cover-image/EXTEND.md" && echo "xdg"
test -f "$HOME/.baoyu-skills/baoyu-cover-image/EXTEND.md" && echo "user"

# PowerShell (Windows)
if (Test-Path .baoyu-skills/baoyu-cover-image/EXTEND.md) { "project" }
$xdg = if ($env:XDG_CONFIG_HOME) { $env:XDG_CONFIG_HOME } else { "$HOME/.config" }
if (Test-Path "$xdg/baoyu-skills/baoyu-cover-image/EXTEND.md") { "xdg" }
if (Test-Path "$HOME/.baoyu-skills/baoyu-cover-image/EXTEND.md") { "user" }
ResultAction
FoundLoad, display summary → Continue
Not found⛔ Run first-time setup (references/config/first-time-setup.md) → Save → Continue
CRITICAL: If not found, complete setup BEFORE any other steps or questions.

Step 1: Analyze Content

  1. Save reference images (if provided) → references/workflow/reference-images.md
  2. Save source content (if pasted, save to source.md)
  3. Analyze content: topic, tone, keywords, visual metaphors
  4. Deep analyze references ⚠️: Extract specific, concrete elements (see reference-images.md)
  5. Detect language: Compare source, user input, EXTEND.md preference
  6. Determine output directory: Per File Structure rules

Step 2: Confirm Options ⚠️

Full confirmation flow: references/workflow/confirm-options.md

ConditionSkippedStill Asked
--quick or quick_mode: true6 dimensionsAspect ratio (unless --aspect)
All 6 + --aspect specifiedAllNone

Step 3: Create Prompt

Save to prompts/cover.md. Template: references/workflow/prompt-template.md CRITICAL - References in Frontmatter:

  • Files saved to refs/ → Add to frontmatter references list
  • Style extracted verbally (no file) → Omit references, describe in body
  • Before writing → Verify: test -f refs/ref-NN-{slug}.{ext} Reference elements in body MUST be detailed, prefixed with "MUST"/"REQUIRED", with integration approach.

Step 4: Generate Image

  1. Backup existing cover.png if regenerating
  2. Check image generation skills; if multiple, ask preference
  3. Process references from prompt frontmatter:
    • direct usage → pass via --ref (use ref-capable backend)
    • style/palette → extract traits, append to prompt
  4. Generate: Call skill with prompt file, output path, aspect ratio
  5. On failure: auto-retry once

Step 5: Completion Report

Cover Generated!
Topic: [topic]
Type: [type] | Palette: [palette] | Rendering: [rendering]
Text: [text] | Mood: [mood] | Font: [font] | Aspect: [ratio]
Title: [title or "visual only"]
Language: [lang] | Watermark: [enabled/disabled]
References: [N images or "extracted style" or "none"]
Location: [directory path]
Files:
✓ source-{slug}.{ext}
✓ prompts/cover.md
✓ cover.png

Image Modification

ActionSteps
RegenerateBackup → Update prompt file FIRST → Regenerate
Change dimensionBackup → Confirm new value → Update prompt → Regenerate

Composition Principles

  • Whitespace: 40-60% breathing room
  • Visual anchor: Main element centered or offset left
  • Characters: Simplified silhouettes; NO realistic humans
  • Title: Use exact title from user/source; never invent

Extension Support

Custom configurations via EXTEND.md. See Step 0 for paths. Supports: Watermark | Preferred dimensions | Default aspect/output | Quick mode | Custom palettes | Language Schema: references/config/preferences-schema.md

References

Dimensions: text.md | mood.md | font.md Palettes: references/palettes/ Renderings: references/renderings/ Types: references/types.md Auto-Selection: references/auto-selection.md Style Presets: references/style-presets.md Compatibility: references/compatibility.md Visual Elements: references/visual-elements.md Workflow: confirm-options.md | prompt-template.md | reference-images.md Config: preferences-schema.md | first-time-setup.md | watermark-guide.md

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