JA Tool

JSON2Mermaid Lite: Guide

Generate Mermaid flowchart syntax from JSON to visualize structure quickly.

What it does

Parses JSON and generates Mermaid.js flowchart syntax
Helps you understand nested objects/arrays at a glance
Copy the output into Mermaid Live Editor to render a diagram
Browser-only, no storage

Open the tool 日本語ガイド

Use this when

You want to understand an API response quickly
You need a rough structure diagram for docs/README
You’re dealing with large JSON and want a visual map

Keywords: JSON visualization, Mermaid converter, JSON structure diagram, flowchart generator

How to use

Paste JSON into the input (or load a sample)
Generate Mermaid syntax
Copy & paste into Mermaid Live Editor to render

Tip: try a smaller JSON first to keep diagrams readable.

Notes (limits)

The output focuses on structure, not perfect diagram layout.
Very large JSON can slow down your browser.
Long string values can clutter diagrams—trim values if needed.