Dynamic QR codes you can edit after you print them
Free online tools for flowcharts, charts, diagrams and timelines with no sign-up
Stage
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Founded
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Pricing model
Freemium
Freemium
Pricing
Free: unlimited static QR codes forever. Pro: $12/month or $8/month billed yearly ($96/year). Business: $39/month or $32/month billed yearly ($384/year).
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
Edit destination after printing without reprinting
Real-time scan analytics by time, location and device
Free static QR codes that never expire
AI Art QR codes
Animated QR codes
Custom colors, logo and frames
Team collaboration with up to 5 members
API access for developers
CSV export of scan data
No watermarks or expiry dates
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
Static codes are truly free forever with no expiry or tricks—they encode the URL directly and work independently of the company's servers
Change a printed code's destination instantly from the dashboard without reprinting
No per-scan fees or usage limits—one flat monthly price covers unlimited scans
AI Art generates working QR codes that look like custom artwork
Animated QR codes with motion that still scan on every frame
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
QRmkr
Diagram Smith