Free online tools for flowcharts, charts, diagrams and timelines with no sign-up
Stage
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
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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
Visual canvas for multiple coding agents
Real-time editing and reprompting
HTML and CSS code generation
Design system management
Motion and animation timeline
Web import capability
Comments and feedback on canvas
3D element support
SVG graphics creation
Cross-platform support
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
Works locally without MCP or API configuration
Automatically detects installed coding agents
Unified design system that agents read
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
Recto
Diagram Smith