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priv QR vs Diagram Smith

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

priv QR compared with Diagram Smith
Detailpriv QR logo priv QRDiagram Smith logo Diagram Smith
What it doesFree browser-based QR tools for 3D printing, Matter setup codes, and batch generation Free online tools for flowcharts, charts, diagrams and timelines with no sign-up
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free: no account required, all diagram and chart makers, PNG/SVG/PDF export, no watermark. Pro: Monthly $9.99 a month, Yearly $99.99 a year with 7-day free trial, Lifetime $239.99 once. Euro area: €10.99 a month, €109.99 a year, €259.99 once (VAT included).
Key features
  • QR Code to STL generator for 3D printing
  • Matter setup QR generation and decoding
  • Private QR code generator without redirect links
  • Barcode to STL converter for Code 128, EAN-13, and UPC-A
  • Crypto payment QR generator for Bitcoin, Ethereum, and Lightning
  • Browser-side QR payload generation
  • STL, SVG, and PNG export formats
  • Physical scanability guidance and print profiles
  • No account or login required
  • Flowchart and process diagram maker with canvas and text-to-diagram modes
  • Text-to-diagram tools for UML, ER and sequence diagrams
  • Chart tools: pie chart, line graph, gauge and Sankey diagram
  • Automatic diagram layout from typed text
  • Export to PNG, SVG and PDF without watermark
  • Share diagrams with share links
  • Pro: editable .drawio export and vector PDF
  • Pro: multi-page documents and layers
  • Diagram checks for unlabelled branches and dead ends
  • Works on phone and computer
What makes it different
  • All QR generation occurs in the browser with no server-side processing or data collection
  • Specialized tools for physical QR code outputs like 3D prints and Matter device setup
  • Practical print profiles and scanability guidance for different real-world use cases
  • No redirect service inserted into static QR codes
  • Built-in validation checks and task-specific guidance for printing and device setup
  • Completely free with no account required and no watermark on exports
  • Nothing uploaded: all work stays on your device in your browser
  • Results computed by the same tested code, not manually typed
  • Multiple export formats: PNG at 4 sizes, SVG and PDF
  • Converts between formats: Mermaid to draw.io, SQL to ER, Visio to flowchart
Community votes00
DR (Domain Rating by Ahrefs)2 +1 (up) since last check3 +1 (up) since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)1619
Referring domains (Majestic)44

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