Mermaid Viewer vs mockiso

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 mockiso
Detail	Mermaid Viewer	mockiso
What it does	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports	Turn app screenshots into photorealistic 3D device mockups in seconds
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: 3 saved projects, 3 screenshots per project, unlimited exports up to 4K, no commercial use. Pro: $7/month or $84/year (save 22%) — 50 saved projects, 20 screenshots per project, unlimited 8K exports, commercial use, no watermark. Studio: $19/month or $228/year — unlimited projects and screensh
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	129+ device models (iPhones, Android phones, tablets, foldables, laptops, monitors, watches, TVs) Real 3D models with beveled glass, metal frames and camera modules Studio lighting with movable key light and exposure control Soft shadows with adjustable softness, distance and strength Camera lens zoom 24–135 mm with rotation controls Single, duo and trio screen layouts with caption support Up to 8K export (8192 px) as PNG, JPEG or WebP Presets for App Store, Google Play, Instagram, Twitter/X, Dribbble and more Saved projects to edit and revisit anytime
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	Real 3D rendering instead of flat templates with accurate perspective from any angle Studio-grade lighting and shadows without photography equipment or post-processing software Full browser-based workflow with no plugins or software installation required Extensive device library with 129 models and 440 finishes, regularly updated Up to 8K export resolution with ZIP download of all angles
Community votes	0	0
DR (Domain Rating by Ahrefs)	8 +1 (up) since last check	2 no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	23	17
Referring domains (Majestic)	12	2

5 details filled in for both companies.

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