Mermaid Editor

Edit and render Mermaid diagrams locally (self-hosted Mermaid).

Interactive controls load with JavaScript. Processing stays in your browser—nothing is uploaded.

ലോഡ് ചെയ്യുന്നു…

എങ്ങനെ ഉപയോഗിക്കാം

  1. Open Mermaid Editor — Allow the large vendor script to load once.
  2. Edit diagram source — Write Mermaid syntax locally.
  3. Preview — See SVG render or syntax errors.
  4. Download SVG — Export or copy source.

പരിധികൾ

Requires JavaScript. Extremely large inputs may slow the browser tab. Results depend on your browser APIs; there is no server-side processing quota because nothing is uploaded.

When to use

When you want a quick, free utility without creating an account or sending content to an online converter.

When not to use

When you need server-side integration, batch automation at scale, or certified compliance tooling.

Privacy note

Tool inputs are processed in your browser only. Theme, language and favorites may use localStorage; hosting may keep standard access logs (IP, UA, URL) without tool payloads.

FAQ（5）

CDN Mermaid?

No—mermaid.min.js is self-hosted and loaded only on this tool page (~2.5MB).

Uploaded diagrams?

Source never leaves the browser.

Export?

Download SVG; Copy typically copies the Mermaid source.

Syntax errors?

The preview shows the parser/render error message.

PlantUML server?

Not used—no remote renderers.