AI-powered room design tool that transforms photos into styled interior concepts
Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Stage
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Founded
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Based in
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Pricing model
Freemium
Freemium
Pricing
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.
Free: unlimited editor and preview, 3 saved diagrams, 5 AI uses total, PNG export 1× with watermark. Starter: $6.99/month or $69.90/year; 30 saved diagrams, 500 AI conversations per month, PNG export up to 4× without watermark. Pro: $11.99/month or $119.90/year; unlimited diagrams, unlimited AI, PNG
Key features
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
Live preview of Mermaid code as you type
AI diagram generator, editor and syntax fixer
PNG export on every plan; JPG, SVG and PDF on Pro
All 22+ Mermaid diagram types supported
Share diagrams via public links and embeds
Save diagrams to cloud with folders and version history
Keyboard shortcuts and autocomplete
Mobile-responsive editor with pan and pinch-zoom
What makes it different
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
No account or sign-up required to start editing diagrams
Affordable pricing: Starter at $6.99/month, Pro at $11.99/month
Diagrams render in your browser; nothing stored unless you choose to save
Fast editor with instant rendering and clear error messages
LUMI
Mermaid Viewer