Now available on Windows, macOS & Linux

Turn any screen into a
collaborative canvas.

Host screen annotation sessions directly over your apps, or start a fresh whiteboard for brainstorming. Simple code-based joining via web or app. Totally free, no account clutter.

Open Web App Infinite Canvas
Session ID: CFD-8921
Sarah (Web) Mike (Host)
Two Distinct Modes

Collaborate Your Way

Screen Annotation Mode

Turn your actual desktop into a canvas.

  • Draw over any app (CAD, IDEs, Browser).
  • Perfect for code reviews and tutorials.
  • Remote peers see your screen + drawings.

Virtual Whiteboard Mode

A clean slate for fresh ideas.

  • Infinite canvas for brainstorming.
  • Works locally even if server is offline.
  • Works instantly in any web browser.

Seamless Collaboration

Start annotating in under 30 seconds.

1

Start Session

Open the desktop app or web browser and click "Host". Your creative space is ready.

2

Share Link

A unique session link is generated. Share the URL or just the 6-character code with your team.

.../CFDPenney/?code=XRKXM
3

Annotate Together

Peers join instantly via the link. Everyone's cursor is visible. Draw, highlight, and solve problems together.

Enhanced Collaboration

More Ways to Connect

Beyond drawing together, CFD Penney offers video calls, chat messaging, and an infinite canvas for unlimited creativity.

Video & Camera

See and hear your team in real-time.

  • Face-to-face video calls with camera sharing.
  • Audio support with mute/unmute controls.
  • Device selection for camera and microphone.
  • Peer-to-peer video streams (not recorded).

Chat & Messaging

Real-time messaging with file sharing.

  • Instant text messaging during collaboration.
  • File attachments (images, documents, PDFs).
  • Emoji reactions and rich message formatting.
  • Message history during active sessions.

Infinite Canvas

Penney mode for unlimited creativity.

  • Unlimited canvas space with pan and zoom.
  • Perfect for large projects and brainstorming.
  • All drawing tools available in infinite mode.
  • Collaborative editing on the infinite canvas.

Ready to jump in?

Powered by PeerJS & WebRTC. No login required for guests.
* Collaboration depends on public server availability, but you can use the whiteboard locally anytime.

Frequently Asked Questions

Got Questions? We've Got Answers

Everything you need to know about CFD Penney

CFD Penney is a free, open-source collaborative annotation tool that enables real-time drawing, screen sharing, video calls, and chat messaging. You can draw on whiteboards, annotate shared screens (desktop app), or use the infinite canvas mode for unlimited creative space. No account required.

Yes, CFD Penney is completely free forever. There are no hidden costs, no subscriptions, and no account registration required. The service is open-source and available for anyone to use.

No, CFD Penney does not require any account creation or login. You can start collaborating immediately by hosting a session or joining with a 6-character session code. No personal information is collected.

Collaboration works through peer-to-peer WebRTC connections. When you host a session, you get a unique 6-character code. Share this code with others, and they can join instantly. All drawing, video, and chat data is transmitted directly between participants - nothing is stored on servers.

CFD Penney is available as a desktop application for Windows, macOS, and Linux, and as a web application that works in any modern browser. Web users can collaborate with desktop users seamlessly.

Yes, CFD Penney includes video calls with camera sharing, audio support, and real-time chat messaging with file attachments. All video and chat data is transmitted peer-to-peer and is not recorded or stored on servers.

The infinite canvas (Penney mode) provides unlimited canvas space with pan and zoom capabilities. It's perfect for large-scale projects, extensive brainstorming sessions, and creative work that requires unlimited space. All drawing tools are available in infinite mode with collaborative editing support.

No, CFD Penney uses a peer-to-peer architecture. Your drawings, annotations, video streams, and chat messages are transmitted directly between participants and are not stored on our servers. Only temporary session codes are used to facilitate connections.

Yes, you can use the whiteboard and drawing features locally without an internet connection. However, collaboration features (real-time sync, video calls, chat) require an internet connection for peer-to-peer communication.

To join a session, you need the 6-character session code from the host. Enter the code in the join field on the homepage or in the collaboration modal. You'll connect instantly via peer-to-peer WebRTC.

CFD Penney includes multiple drawing tools: pen for freehand drawing, eraser, text tool, various shapes (line, arrow, rectangle, circle, ellipse, triangle, diamond, star, and more), stickers, and a selection tool for manipulating drawn elements. You can customize colors, stroke width, and fill options.

Yes, CFD Penney is open-source software. The complete source code is available on GitHub, allowing you to review the code, audit privacy and security practices, contribute to development, or fork and modify it for your own use.