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Pretty Mermaid

Pretty Mermaid is an AI-agent skill and JavaScript command-line tool that renders Mermaid source locally as themed SVG, PNG or terminal ASCII/Unicode diagrams.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Pretty Mermaid — OpenViST project profile in Agent Frameworks.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when Mermaid source needs to become locally rendered assets or terminal output, especially where a workflow benefits from batch export or an AI coding environment integration.

Who it is for

  • Developers using AI coding assistants who want Mermaid diagrams rendered into files or terminal output.
  • Documentation maintainers who need themed SVG or PNG exports, including batch output.
  • Command-line workflow authors who need readable diagram output in terminal reports.

Documented uses

  • Render a Mermaid source file as SVG or PNG.
  • Batch-render diagram files from an input directory to an output directory.
  • Create terminal-readable ASCII or Unicode diagrams.
  • Choose from built-in themes or use custom colors.
Before you choose

Requirements & limits

The README requires Node.js 16 or newer and documents global installation through the skills command-line installer. The public repository lists an MIT license.

  • The documented outputs are SVG, PNG and ASCII/Unicode; select according to whether the destination is documentation, sharing or a terminal.
  • The README lists six diagram types: flowchart, sequence, state, class, ER and XY chart.
  • The project describes batch rendering as parallel, with input and output directories specified in its CLI example.
  • The renderer is described as local and browser-free.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install the Pretty Mermaid skill

Add the skill globally and confirm it appears in the installed-skill list.

Before you start

  • Node.js 16 or newer
  • The skills command-line installer

Steps

  1. Run the command below.

    Documented command
    npx skills add imxv/pretty-mermaid-skills@pretty-mermaid -g -y

  2. Run the command below.

    Documented command
    npx skills list -g

  3. Confirm that pretty-mermaid appears in the global skill list.

Expected outcome

The skill is listed among globally installed skills.

Guide limitations

  • These steps document installation and listing only; they do not demonstrate diagram rendering.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
14 October 2026
Original website title
imxv/Pretty-mermaid-skills · Official homepage title · retained in its source language
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