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
Freemium
Freemium
Pricing
300 free tokens available after registration; additional pricing not specified on pages
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
ControlNet support for precise image control
IP-Adapter and reference-based generation
Generation history and preset saving
LoRA style models and customization
5 AI model modifiers for enhanced control
3 UI customization modes
Cloud-based processing without GPU requirements
Commercial rights to all generated images
Inpainting and image upscaling capabilities
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
Multiple AI models to choose from for each workflow stage
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
ABrush
Diagram Smith