cnvs.app

Spec sheet

What it does

cnvs.app is a free, browser-based collaborative whiteboard for people and AI agents.Read 9 Oct 2026 · cnvs.app

Security

Traffic is TLS-encrypted, and boards can be locked with an access key for write access or both reading and writing.Read 9 Oct 2026 · cnvs.app

Privacy

The maker says board content is excluded from AI training and analytics; its privacy policy says Google Analytics may collect page and coarse usage data on tagged pages.Read 9 Oct 2026 · cnvs.app

Support

The privacy policy directs privacy questions to [email protected] and says users can submit information through the feedback form or support email.Read 9 Oct 2026 · cnvs.app

Maker

The about page identifies CODER AI as the maker of cnvs.app.Read 9 Oct 2026 · cnvs.app

AI integrations

MCP-capable clients and REST API clients can read and edit the same live boards without an API key.Read 9 Oct 2026 · cnvs.app

Canvas tools

The canvas supports freehand drawing, text with Markdown, sticky notes, diagram boxes, connectors, image and URL pasting, and pan and zoom.Read 9 Oct 2026 · cnvs.app

Diagrams

Mermaid diagrams, including flowcharts, sequence diagrams, ER diagrams, Gantt charts, and mindmaps, render from text in a canvas node.Read 9 Oct 2026 · cnvs.app

Exports

The product supports printing and PDF export, and the app page also lists board JSON and task CSV export options.Read 9 Oct 2026 · cnvs.app

Kanban mode

An empty board can be switched to a kanban task board with columns, lanes, and cards carrying descriptions, due dates, priorities, and assignees.Read 9 Oct 2026 · cnvs.app

Mobile and offline

It is an installable Progressive Web App that works on phones and tablets and provides read-only access to previously cached boards offline.Read 9 Oct 2026 · cnvs.app

Retention limit

Boards are purged from the live service after 30 days of inactivity, and there is no user-facing recycle bin or individual-board recovery.Read 9 Oct 2026 · cnvs.app

Sharing and sync

Anyone with a board URL can collaborate live without signing up, and edits sync over WebSockets.Read 9 Oct 2026 · cnvs.app

Usage limits

Developer documentation lists per-board limits of 500 text nodes, 50 images totaling up to 10 MB, and 2,000 strokes.Read 9 Oct 2026 · cnvs.app

Plans and prices

Every cnvs.app plan and price →

Where Specifiction places it

• Online Whiteboard Tools#22 of 568.1
• Online whiteboards#31 of 587.9
• AI Whiteboard Software#15 of 278.1