Visual Explainer: Instantly Turn Terminal Output into Beautiful HTML Diagrams

Visual Explainer is an agent skill that turns complex terminal output into beautiful, interactive HTML diagrams and tables—making code reviews, architecture diagrams, and requirements much easier to read and share.

CoClaw
March 28, 2026
2 min read
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What is Visual Explainer?

Visual Explainer is an open-source agent skill that transforms complex terminal output—like system architecture diagrams, code diffs, and requirement tables—into styled, interactive HTML pages. Instead of struggling with ASCII art and box-drawing characters, you get real diagrams, tables, and slides you actually want to read, all viewable in your browser.

Why Use It?

Traditional coding agents output diagrams and tables as plain text, which quickly becomes unreadable for anything beyond the simplest cases. Visual Explainer fixes this by:

  • Rendering diagrams with real typography and themes (dark/light)
  • Supporting interactive Mermaid diagrams with zoom and pan
  • Generating magazine-quality slide decks
  • Replacing ugly ASCII tables with responsive HTML tables
  • Requiring no build step or dependencies beyond a browser

Key Features

  • /generate-web-diagram: Create HTML diagrams for any topic
  • /generate-visual-plan: Visual implementation plans for features
  • /generate-slides: Beautiful slide decks
  • /diff-review: Visual code and architecture diff review
  • /plan-review: Compare plans against codebase with risk assessment
  • /project-recap: Project mental model snapshots
  • /fact-check: Document accuracy verification
  • /share: Deploy HTML pages to Vercel for live sharing

The agent automatically switches to HTML output for complex tables, making large data much easier to read.

How to Install

  • Claude Code Marketplace:
    • /plugin marketplace add nicobailon/visual-explainer
    • /plugin install visual-explainer@visual-explainer-marketplace
  • Pi:
    • curl -fsSL https://raw.githubusercontent.com/nicobailon/visual-explainer/main/install-pi.sh | bash
  • OpenAI Codex:
    • Clone and copy the skill to your agent's skills directory

How It Works

Visual Explainer uses a set of templates and scripts to convert agent output into HTML, using libraries like Mermaid and Chart.js for diagrams and charts. The output opens directly in your browser for easy viewing and sharing.

Limitations

  • Requires a browser to view output
  • OS theme changes require a page refresh for SVGs
  • Output quality may vary by model

License

MIT

Visual Explainer is a project by nicobailon. This post summarizes its features and benefits for developers and teams who want to make their agent output more readable and shareable.

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