Mermaid Viewer vs Stamp Creator Online

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 Stamp Creator Online
Detail	Mermaid Viewer	Stamp Creator Online
What it does	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports	Design custom stamps online with editable text, logos and borders
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	One stamp: PNG $2.50, Vector package $2.90, Complete package $3.50. Monthly unlimited: $15.90/month or $9.90/month yearly at $119/year. Lifetime access: $299 one-time.
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	Editable text, borders and logos that stay separate during design Multiple stamp shapes including circle, rectangle and triangle Real-time preview while editing Logo and image upload support Ink effect and aging options Multiple export formats: PNG, SVG, EPS, PDF, JPG, DOCX Save and re-edit designs anytime in browser Customizable plate size in millimetres My Library for storing up to 50 designs free or 1,000 with paid plan Works on desktop, tablet and mobile browsers
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	Every design element stays editable as separate layers, making revisions faster than redrawing Free to design and preview; you only pay for files you download Instant download in six file formats for different uses No software installation required; works entirely in your browser Ready-made templates for common stamp uses like company seals, notary stamps and address labels
Community votes	0	0
DR (Domain Rating by Ahrefs)	6 +1 (up) since last check	20 +1 (up) since last check
Trust Flow (Majestic)	3	6
Citation Flow (Majestic)	23	19
Referring domains (Majestic)	12	31

5 details filled in for both companies.

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