Flow Builder

What is Flow Builder?

Flow Builder is a free, browser-based visual flowchart builder that combines Canva-level ease with Linear-level precision. Create beautiful flowcharts and process diagrams with an intuitive visual canvas editor. No backend, no login, no hassle.

Features

• Visual Canvas Editor - Click anywhere to add nodes, drag to connect them
• Multiple Node Types - Start, End, Process, Decision, and Input/Output nodes
• Automatic Layout - Smart positioning and edge routing for clean diagrams
• Built-in Validation - Get helpful warnings for missing connections or invalid flows
• Browser Storage - All diagrams saved locally in your browser
• Export Options - Download as JSON, PNG, SVG, or Mermaid format
• Mermaid Compatibility - Import and export Mermaid diagrams (Developer Mode)
• 100% Offline - Works without internet connection
• No Registration - Start creating immediately, no account needed

How to Use

1. Click anywhere on the canvas to add a new process node
2. Double-click any node to edit its label
3. Drag from one node to another to create connections
4. Use the toolbar to export your diagram or import existing files
5. Enable Developer Mode in settings to access Mermaid import/export

Node Types

• Start - Beginning of your flow (rounded circle)
• End - End of your flow (rounded circle)
• Process - Standard process step (rectangle)
• Decision - Decision point with multiple paths (diamond)
• Input/Output - Data input or output (parallelogram)

Perfect For

• Product managers documenting user flows
• Developers visualizing algorithms
• Business analysts mapping processes
• Anyone who needs to create clear, visual flowcharts