Requirements
- Target platform
- OpenClaw
- Install method
- Manual import
- Extraction
- Extract archive
- Prerequisites
- OpenClaw
- Primary doc
- SKILL.md
Tencent SkillHub ยท Developer Tools
Mermaid Image Generator
Generate PNG/SVG images from Mermaid diagram syntax using mermaid.ink API. Zero dependencies - uses only Node.js built-in modules and curl. Use when users ne...
skill openclawclawhub Free
Generate PNG/SVG images from Mermaid diagram syntax using mermaid.ink API. Zero dependencies - uses only Node.js built-in modules and curl. Use when users ne...
โฌ 0 downloads โ
0 stars Unverified but indexed
Install for OpenClaw
Quick setup
- Download the package from Yavira.
- Extract the archive and review SKILL.md first.
- Import or place the package into your OpenClaw setup.
Package facts
- Download mode
- Yavira redirect
- Package format
- ZIP package
- Source platform
- Tencent SkillHub
- What's included
- SKILL.md, scripts/mermaid-to-image.js
Validation
- Use the Yavira download entry.
- Review SKILL.md after the package is downloaded.
- Confirm the extracted package contains the expected setup assets.
Install with your agent
Agent handoff
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
New install
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
Upgrade existing
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
Trust & source
Release facts
- Source
- Tencent SkillHub
- Verification
- Indexed source record
- Version
- 1.0.0
Provenance
- Publisher
- vincent-ng
- Source page
- View original listing
- Canonical URL
- Open canonical page
Documentation
Mermaid Image Generator
Convert Mermaid diagram syntax to PNG/SVG images using the mermaid.ink online rendering API. Zero dependencies - uses only Node.js built-in modules and curl.
Quick Start
# From a .mmd file node scripts/mermaid-to-image.js diagram.mmd output.png # From stdin echo "flowchart LR; A --> B" | node scripts/mermaid-to-image.js - output.png # Generate SVG instead node scripts/mermaid-to-image.js diagram.mmd output.svg
When to Use This Skill
Use this skill when: User asks to "draw a diagram", "create a flowchart", "make a visual" User needs diagram images for PPTs, documentation, or presentations User wants to convert Mermaid code to shareable image files Local Mermaid CLI (mmdc) is unavailable or has dependency issues
Basic Conversion
node scripts/mermaid-to-image.js <input> <output> Input options: File path: diagram.mmd Stdin: - (pipe Mermaid code directly) Output format: Determined by file extension (.png or .svg)
Examples
Example 1: Convert file to PNG node scripts/mermaid-to-image.js flowchart.mmd flowchart.png Example 2: Pipe from stdin cat <<EOF | node scripts/mermaid-to-image.js - sequence.png sequenceDiagram Alice->>Bob: Hello Bob-->>Alice: Hi EOF Example 3: Generate SVG for web node scripts/mermaid-to-image.js architecture.mmd architecture.svg
Mermaid Diagram Types
This skill supports all Mermaid diagram types: TypeUse CaseflowchartProcesses, algorithms, user journeyssequenceDiagramAPI flows, interactions over timeclassDiagramOOP design, domain modelserDiagramDatabase schemasstateDiagramState machinesganttProject timelinespieProportional datagitGraphGit branching strategies
Flowchart
flowchart LR A[Start] --> B{Decision} B -->|Yes| C[Action 1] B -->|No| D[Action 2] C --> E[End] D --> E
Sequence Diagram
sequenceDiagram participant User participant API participant Database User->>API: POST /login API->>Database: Query Database-->>API: Result API-->>User: Response
Class Diagram
classDiagram Animal <|-- Duck Animal <|-- Fish Animal: +int age Animal: +String gender Animal: +isMammal()
API Details
Service: mermaid.ink Endpoints: PNG: https://mermaid.ink/img/{base64_code} SVG: https://mermaid.ink/svg/{base64_code} Advantages: โ No local dependencies (no Chrome/Puppeteer needed) โ Free and fast โ Returns high-quality PNG/SVG โ Works in headless environments Limitations: Requires internet connection Diagram code is sent to external service (don't use for sensitive data)
Error Handling
The script handles common errors: โ File not found: diagram.mmd โ API request failed: 400 Bad Request โ Failed to connect to mermaid.ink: Connection timeout Troubleshooting: Check internet connectivity Verify Mermaid syntax at https://mermaid.live Ensure output directory exists (script creates it automatically)
Integration Pattern
When creating diagrams for users: Write Mermaid code โ Save to .mmd file or use stdin Run conversion script โ Generate PNG/SVG Send/deliver image โ Attach to response or save to specified location Example workflow: # 1. Create diagram cat > openclaw-flow.mmd <<EOF flowchart LR User --> OpenClaw OpenClaw --> Tools EOF # 2. Convert to image node scripts/mermaid-to-image.js openclaw-flow.mmd openclaw-flow.png # 3. Use the image (send via message, save, etc.)
Best Practices
Keep diagrams simple - Under 15 nodes for readability Use meaningful labels - Self-documenting diagrams Test syntax first - Validate at mermaid.live before converting Choose format wisely - PNG for PPTs, SVG for web/docs Add comments - Use %% for in-diagram documentation
Security Notes
Diagram code is sent to mermaid.ink API Do not include sensitive information in diagrams For sensitive data, use local Mermaid CLI instead
Category context
Code helpers, APIs, CLIs, browser automation, testing, and developer operations.
Source: Tencent SkillHub
Largest current source with strong distribution and engagement signals.
Package contents
Included in package
1 Docs1 Scripts
- SKILL.md
- scripts/mermaid-to-image.js