Mermaid Viewer vs Mosaicora

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

Mermaid Viewer compared with Mosaicora
Detail	Mermaid Viewer	Mosaicora
What it does	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports	Automatic Open Graph images for every page
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	PL
Pricing model	Freemium	Not given
Pricing	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	Free: €0 forever (1 website, 1 shared template, 35 image generations per month). Starter: €12/month (3 websites, 10 templates, 300 image generations per month). Growth: €39/month (15 websites, 50 templates, 2,000 image generations per month). Scale: €99/month (50 websites, 200 templates, 5,000 image
Key features	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	Ten free OG image templates Live preview at 1200×630 pixels Background patterns and color controls Browser-only PNG export without account Image upload and repositioning Reusable brand templates and settings Automatic page content extraction API access for developers Bulk image generation CDN-hosted image delivery
What makes it different	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	No account required for free designer Images stay in browser and are not uploaded to servers Unified branding across all pages Simple workflow focused on one task Independent company transparent about operations
Community votes	0	0
DR (Domain Rating by Ahrefs)	6 +1 (up) since last check	3 no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	23	23
Referring domains (Majestic)	12	32

4 details filled in for both companies.

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