Mermaid Viewer vs Ultramock

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 Ultramock
Detail	Mermaid Viewer	Ultramock
What it does	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports	Premium product visuals for apps, websites and SaaS
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
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 with core creative editor, basic 3D models, watermarked image and video exports (720p 30fps landscape, 3 per 24 hours). Pro (monthly): $20/mo with unlimited watermark-free exports up to 4K, transparent images and videos, premium 3D models, custom 3D scenes, full asset library and MCP contro
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	Detailed 3D device models and custom 3D scenes Depth of field, bloom, grain and colour effects Camera animation and image or video export Transparent image and video export options on Pro Starter templates and cloud projects Chrome extension for capturing browser tabs Up to 5120 px image and 3840 px video export Save and reuse custom templates on Pro
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 installation required - runs entirely in the browser Real 3D rendering with professional depth of field and lighting Focused workflow from screenshot to finished visual Professional motion and effects without After Effects or motion designer
Community votes	0	0
DR (Domain Rating by Ahrefs)	6 +1 (up) since last check	26 no change since last check
Trust Flow (Majestic)	3	7
Citation Flow (Majestic)	23	27
Referring domains (Majestic)	12	89

5 details filled in for both companies.

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