Relumi vs Mermaid Viewer

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Relumi compared with Mermaid Viewer
Detail	Relumi	Mermaid Viewer
What it does	Keep the room. Change the rest.	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free: 2 tries (1K export). Yearly: $49/year with 50 generates, 20% off packs, 5 looks at once. Lifetime: $129 with 180 generates, 30% off packs, 10 looks at once. Credit packs: Starter $9 (20 generates), $19 (50 generates), $29 (90 generates). Yearly subscription discounts available on packs.	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	Generate multiple design looks simultaneously based on membership level Keep walls and windows unchanged while redesigning other elements Commercial use rights included in paid plans No account required for initial free try Failed runs do not consume credits	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	Keeps walls and windows in place while redesigning other room elements Supports specialized design options for kitchens with cabinets, counters, and backsplashes Flexible credit-based pricing with no subscription required Can generate up to 10 design variations simultaneously with lifetime membership	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
Community votes	0	0
DR (Domain Rating by Ahrefs)	8 no change since last check	6 +1 (up) since last check
Trust Flow (Majestic)	18	3
Citation Flow (Majestic)	14	23
Referring domains (Majestic)	15	12

5 details filled in for both companies.

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