A free real-time collaborative whiteboard — no signup, no login. Open a shared canvas, send the URL, and everyone draws together instantly. Type text, drop sticky notes, sketch freehand, paste images and render Mermaid diagrams, all on one online whiteboard that syncs live for every person on the link.
cnvs.app is an online whiteboard that's free and collaborative from the first click. There's no account to create and nothing to install — open a board and you're on a blank collaborative canvas straight away. To bring people in, you just share the URL: everyone who opens it lands on the same live board and can draw at once. That's a shared whiteboard with no login, working over the web on any device.
Real-time collaboration covers everything on the canvas. Type and edit text, turn any block into a sticky note, sketch freehand drawings, paste images and links, and write Mermaid diagrams that render live. Every change syncs to every collaborator in about 100 ms, so the whole group is always looking at the same board.
| Capability | Miro / FigJam | cnvs.app collaborative whiteboard |
|---|---|---|
| Signup / login required | Yes, every collaborator | No — anyone with the URL |
| Share by URL | Account & permissions first | Yes — send a link, everyone draws |
| Real-time collaboration | Yes | Yes (WebSocket, ~100 ms) |
| Free tier limits | 3 editable boards, sharing gated | Unlimited boards, unlimited collaborators |
| Price | $8+/user/month for teams | $0 forever |
| Text, sticky notes & freehand | Yes | Yes — all on one canvas |
| Images & links | Yes | Yes — paste straight in |
| Mermaid diagrams from text | Plugin | Built in |
| AI can edit the board | Paid, in-app only | Public MCP endpoint at https://cnvs.app/mcp |
Yes. cnvs.app is a free real-time collaborative whiteboard with no signup and no login. Open a board, share the URL, and everyone draws together instantly — no account, no paywall, no per-seat pricing.
No. There is no login and no signup. You share the board URL and anyone who opens it joins the same live canvas. It's a shared whiteboard with no login for anyone — draw, type, and paste together in real time.
Every change syncs over WebSocket in about 100 ms, so text, sticky notes, freehand strokes, images and Mermaid diagrams appear on every open board at once. Share one URL and the whole group edits the same collaborative canvas live.
Text and sticky notes, freehand drawings, pasted images and links, and Mermaid diagrams rendered from text — all on one infinite collaborative canvas that everyone with the URL can pan, zoom and edit together.