PhotoToA4 vs Mermaid Viewer

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

PhotoToA4 compared with Mermaid Viewer
Detail	PhotoToA4	Mermaid Viewer
What it does	Fit any photo to A4 and every A-series paper size for print-ready exports in your browser	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Not given	Freemium
Pricing	Free: A4 paper size, upload multiple photos, PDF export, fit/margin/preview controls, browser-based processing. Pro (monthly): $7.9/month for all A1–A5 sizes, unlimited photos per export, PDF/PNG/Word export, no watermark, enhance & remove shadows, priority email support. Pro (yearly): $79/year with	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
Key features	A4 default with A1–A5 paper size support Fit modes: contain, cover, or guided placement Margin control and safe edges for home printers Multi-page PDF export and reordering PNG and Word batch export formats Portrait or landscape orientation per page Works on phone and desktop Enhance and remove shadows (Pro feature)	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
What makes it different	Purpose-built for paper sizes, not a generic PDF tool Preserves aspect ratio with no stretching or cropping Private by design with browser-based core processing Real paper sizes with print-aware margins Simplified workflow across entire A-series	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
Community votes	0	0
DR (Domain Rating by Ahrefs)	17 −1 (down) since last check	6 +1 (up) since last check
Trust Flow (Majestic)	18	3
Citation Flow (Majestic)	19	23
Referring domains (Majestic)	53	12

4 details filled in for both companies.

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