CodePic is a browser-based hand-drawn style infinite whiteboard for developers who think visually.

Draw freely on an unbounded canvas: flowcharts, system architecture, ER diagrams, wireframes, mind maps, sequence diagrams, sticky notes, and more. Everything renders in a warm Excalidraw-style hand-drawn look that makes even serious technical diagrams feel approachable.

What makes it different:

• 80+ ready-to-use templates — skip the blank canvas

• AI diagram generation via MCP — works with Cursor, Claude Desktop, Windsurf. Ask your AI to "draw a service architecture with a load balancer and 3 servers" and it just appears on the canvas

• Smart connectors — lines auto-route and stay attached when you move shapes

• Frames & pages — organize large boards into named sections

• Export PNG / SVG / JSON — drop diagrams straight into READMEs and docs

• Public share links — no signup required to view

• 100% browser-based, free with no watermark

Built for engineers sketching systems, PMs mapping flows, and anyone tired of fighting heavyweight diagram tools.

Try it: https://codepic.cc

Templates: https://codepic.cc/templates