FlowViz – Private, instant-preview Mermaid diagram editor

Summary: FlowViz is a free, browser-based Mermaid diagram editor that offers live preview and exports clean SVG files without requiring login or backend processing. It enables fast diagram creation with immediate visual feedback and private local rendering.

What it does

FlowViz renders Mermaid diagrams instantly as you type, providing a live preview and allowing export of high-quality SVGs. It operates fully in the browser with no backend involvement.

Who it's for

It is intended for users who need quick, private Mermaid diagram editing without subscription or account setup.

Why it matters

It eliminates delays and privacy concerns by offering instant, local rendering without requiring heavy enterprise tools or logins.