Infinite Whiteboard Tools
Freehand drawing, text, sticky notes, geometric shapes, lines, and connected arrows all on one responsive infinite canvas.
Where scribbles bloom into
ideas that think with you.
Sketch, diagram, and brainstorm freely on an infinite creative canvas. Drop text, shapes, and sticky notes, draw by hand, and let AI expand your thoughts — all in real time with built-in video calls.
50k+Boards created
120+Countries
4.9/5Average rating
99.9%Uptime
Teams do their best thinking here
It replaced three tools for us. Brainstorming, diagramming and note-taking now live on one canvas — and the AI actually saves us hours.
Ava ChenProduct Lead, Northwind
The real-time collaboration is buttery smooth. Our remote design reviews finally feel like we're in the same room.
Marcus ReedDesign Director, Loop
I turn a rough prompt into a full outline in seconds, then clean it up by hand. It's the fastest thinking tool I've used.
Priya NairFounder, Studio Kite
Everything you need to think visually
AI Brainstorming & Flowcharts
Turn rough ideas into walls of colorful sticky notes or structured step-by-step flowcharts and analytical data charts.
AI Image Generation
Generate custom illustrations, icons, and visuals straight onto your board with fast, free AI image synthesis.
Real-time Multiplayer Sync
See teammates' live cursors, selections, and instant edits. Share boards securely with viewer or editor roles.
Built-in Video & Voice Calls
Start video and voice calls directly inside the board. No external Zoom links needed — talk while you sketch.
Crisp PNG & SVG Export
Export your finished boards as high-resolution PNGs or scalable SVGs for documentation, pitch decks, and presentations.
Frequently asked questions
What is Syntheboard?
Syntheboard is an AI-powered infinite whiteboard designed for teams, designers, developers, and educators. It combines real-time multiplayer sketching with AI sticky notes, flowchart generation, AI image creation, and built-in video calls.
Is Syntheboard free to use?
Yes! You can sign up and start whiteboarding immediately for free with no credit card required.
How does the AI assistant work on the canvas?
Click the AI Assistant icon in the canvas toolbar. You can generate brainstorming sticky notes, step-by-step process flowcharts, interactive data charts, or custom illustrations by typing a simple text prompt.
Can I collaborate with my team in real-time?
Yes, invite teammates by email to collaborate. You'll see their live colored cursors move across the canvas, real-time board updates via WebSockets, and you can even hop on a live video call together.
Can I export my whiteboard diagrams?
Yes, you can export your entire board or selected areas at any time as high-resolution PNG images or scalable SVG vector files.
Your next big idea is one ink stroke away.
Join thousands of teams thinking, drawing, and shipping faster. Free to start — no credit card required.