Free live Mermaid diagram editor with no signup required
Upload a photo of your room and preview design changes before you renovate
Stage
Not given
Startup
Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
Free: 1 preview. Starter Pack: $8.99 one-time for 10 credits. Creator Pack: $18.99 one-time for 30 credits. Studio Pack: $38.99 one-time for 100 credits. Credits never expire, no subscription.
Key features
Live preview as you type
21 diagram types including flowcharts, sequence, class, state, ER, Gantt, git graph, mindmap and timeline
Two-way editing for flowcharts
SVG and PNG export
Share diagrams as URLs with embedded diagram content
Built-in template picker and cheatsheet
No account or signup required
Works entirely in browser with local storage
Open Mermaid Live Editor links
Mermaid v11 syntax support
Preserve room layout, windows, doors, and existing furniture
Change wall color and paint finishes
Modify sofa and cushion upholstery
Update floor materials and rugs
Change lighting fixtures and lamps
Add or modify decor and wall accessories
Free download for every generated design
Priority generation queue available with paid credits
What makes it different
No signup, paywall, or data collection required
Diagrams stay in your browser's local storage by default
Two-way editing that updates code when you edit the canvas
Live preview with no render button required
Clean SVG export for professional use in docs and slides
Works as a preview layer preserving your real room instead of rewriting the entire scene
Keeps your layout, windows, and furniture in view by default to compare against your actual room
No monthly subscription or auto-renewal; credits never expire
Removes guesswork by showing exact colors and finishes rendered in your real room's lighting
FlowViz
AI Room Design