Free live Mermaid diagram editor with no signup required
AI room design tool to preview furniture, colors, and styles in your own space before making changes
Stage
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
Free: 10 free generations every week with no sign-up required. Starter: $9 one time for 30 credits ($0.30 per image). Project: $19 one time for 100 credits ($0.19 per image). All paid credits never expire and one-time purchase with 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
Upload room photo and describe desired changes to generate AI previews
Try multiple design variations and regenerate as needed
Add reference images of products or materials to guide the design
Free AI room design without login to preview one result before signing up
Download and share generated design results
Choose between GPT Image 2 and Nano Banana 2 image generation models
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
Realistic previews in your own photo before buying or renovating anything
One-time purchase model with no subscription and non-expiring credits
Keeps the rest of your room unchanged, focusing only on the specific modification you request
Independently operated service not affiliated with AI model providers
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