Dynamic QR codes you can edit after you print them
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
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: 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
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
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
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
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
QRmkr
Mermaid Viewer