Mermaid Viewer vs Image Outliner

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 Image Outliner
Detail	Mermaid Viewer	Image Outliner
What it does	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports	Free image to outline converter for clean outlines, stencils, and line drawings
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 unlimited local tools and 12 signup credits. Maker: $8.99/mo with 160 monthly AI credits. Studio: $19.99/mo with 420 monthly AI credits. Unlimited: $99.99/mo with unlimited AI usage. One-time packs: Try Pack $3.99 (25 credits), Project Pack $10.99 (120 credits), Batch Pack $29.99 (280
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	Local browser preview without signup Multiple outline styles: Clean Outline, Edge Map, Stencil, Thin Lines, Cricut Cut Lines Adjustable stroke, smoothing, threshold, and outline color Transparent PNG output for stickers and layered designs AI Enhance for cleaner print-ready results Supports JPG, PNG, and WEBP formats No watermark on free exports Credit-based AI processing system
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	Free local tools work without account or AI cost Faster than manual editors like Photoshop or Canva Privacy by default with local processing Focused workflow without unnecessary complexity
Community votes	0	0
DR (Domain Rating by Ahrefs)	6 +1 (up) since last check	23 −1 (down) since last check
Trust Flow (Majestic)	3	4
Citation Flow (Majestic)	23	28
Referring domains (Majestic)	12	69

5 details filled in for both companies.

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