About Mermaid

Mermaid is a free Mermaid diagram toolkit. Preview diagrams as you type, export SVG/PNG/PDF, generate starters, and clean AI-generated Mermaid — without uploading your source for rendering.

The site runs on a Nuxt SSG tool shell with an optional same-origin ThinkPHP blog and feedback inbox. Tool algorithms stay in the browser.

Principles

• Local-first Mermaid rendering and export
• One tool per URL for clear tasks and SEO
• Editor as the hub; converters and utils for focused jobs
• No account required for core tools