Free live Mermaid diagram editor with no signup required
AI-powered room design tool that transforms photos into styled interior concepts
Stage
Not given
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
Free: 2 credits after email verification. Mini: $9 for 80 credits. Plus: $19 for 200 credits. Pro: $49 for 600 credits. All purchased credits never expire. 1 credit per design generation.
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
Upload room photos in JPEG, PNG or WebP format up to 10 MB
Select from multiple room types and design styles
Generate design previews showing style, colors and furniture arrangements
Save and download generated designs to personal history
Compare multiple design variations side-by-side with original photo
Watermark-free results with paid credits
Support for room types including living rooms, bedrooms and home offices
Web-based application accessible from any browser
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
Photo-based approach preserves actual room architecture and lighting
Faster alternative to 2D floor plan tools for visualizing style and atmosphere
Immediate visual feedback before purchasing furniture or renovating
Each design variation is a fresh generation allowing unlimited creative exploration
FlowViz
LUMI