Visual Explainer: Turn Terminal Output Into HTML Pages You Actually Want to Read

If you have ever stared at a wall of ASCII boxes, pipes, and dashes trying to understand a diff, an architecture diagram, or a data comparison, you know the problem. Terminal output is functional. It is not readable. Anything beyond a basic list becomes genuinely painful to parse, especially when lines wrap or box-drawing characters do not render correctly in your terminal font.

Visual Explainer is a Claude Code agent skill that replaces that experience entirely.

What it actually does

Instead of printing complex output to the terminal, Visual Explainer generates a self-contained HTML file and opens it in your browser. You get real typography, proper spacing, dark and light theme support, and interactive elements where they make sense.

The skill routes different types of content to the right visualization automatically:

• Flowcharts and system diagrams go through Mermaid with zoom and pan
• Architecture overviews use CSS Grid for clear spatial layouts
• Data comparisons become proper HTML tables
• Metrics and dashboards get Chart.js charts

Everything generated is fully self-contained. No server, no build step, no external dependencies. Just an HTML file that opens in any browser. Files are saved to ~/.agent/diagrams/ so they persist across sessions.

The commands available

There are seven primary commands. /generate-web-diagram for architecture or flow diagrams. /diff-review for side-by-side code comparison. /plan-review to visualize a plan or spec. /project-recap for project summaries. /fact-check for structured verification output. /generate-visual-plan for planning visualizations. And /generate-slides when you want to turn the output into a presentation.

Every command supports a --slides flag for presentation-mode output, which is useful when you are preparing something to share with a team or stakeholder.

Why this matters for complex projects

As codebases grow, the gap between what an agent can understand and what a developer can quickly parse from raw text output gets wider. ASCII art works for simple flows. It breaks down for anything with more than three or four nodes, multiple layers, or comparative data. You end up spending cognitive effort decoding the visualization format instead of understanding the content.

Visual Explainer sidesteps this entirely by just using the web for what the web is good at: rendering structured information in a way that is actually readable. It is not trying to improve the terminal. It is replacing it for the specific job of visualization.

The project is open source and MIT licensed. If you want to see the templates and patterns it uses, the full source is at github.com/nicobailon/visual-explainer.

The best tools remove friction between thinking and doing. When you face decisions that require more than a diagram, Resolve is the thinking tool built for complex choices in work and life.