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Infinite whiteboard + notebook OS

Think on a canvas that already feels alive.

Create an ultimate infinite whiteboard, structured notebooks, diagrams, and presentations with realtime collaboration, Mermaid and Markdown import, exports, and NOT AI.

CanvasLive CollaborationOffline First
Public demo board
SelectStickyArrowNotebook
Ultimate whiteboard
Notebook pages
Try it: drag a sticky from its top bar, then type inside it.

Paste intelligence

Paste Mermaid or Markdown. Watch Notium build the board.

Paste technical diagrams or structured docs and Notium converts them into native canvas objects, real tables, cards, and clean notebook-ready blocks.

Mermaid diagramsMarkdown tablesPreview before insert
Preview first · Insert when ready
Mermaid → Flow diagram

Paste a Mermaid chart.

Notium previews the diagram, then inserts editable shapes, arrows, labels, frames, and animated connectors.

Markdown → Native blocks

Paste Markdown docs.

Headings become hierarchy, todos become checklists, and Markdown tables become real Notium tables.

Frames & presentation

Frame your ideas. Present them like a polished deck.

Turn canvas regions into focused frames, reorder them into a story, then launch a fullscreen presentation with smooth next/previous navigation.

Canvas framesSlide sequenceFullscreen presenting
Build once · Present anywhere

Product pillars

More than a drawing board.

The public screen now previews Notium’s real direction: visual thinking, structured writing, connected diagrams, and collaborative work.

Product system map
Tarun
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Spatial thinking

Infinite canvas

Sketch, diagram, write, connect arrows, and organize large ideas without page limits.

live
Structured docsN

Notebook mode

Turn rough canvas thinking into clean pages, docs, decisions, and team knowledge.

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Live teamwork

Realtime rooms

Designed for cursors, comments, audio/video collaboration, and shared presence.

live
AI-ready flows

Smart diagrams

Flowcharts, graphs, connectors, and later voice-to-diagram creation.

live
Local-first

Offline first

Guests can start locally; signed-in users unlock sync, storage, teams, and sharing.

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Share anywhere

Premium export

Export to PDF, JPG, native Notium files, and later richer documentation formats.

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Workflow

Capture messy ideas, then turn them into shared knowledge.

Start with notes and sketches, connect the structure, document the decision, and share the result with your team.

Write sticky notes

Drop messy thoughts without breaking flow.

Connect the flow

Turn scattered blocks into visible structure.

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Create notebook pages

Promote decisions into clean team docs.

Share or export

Send a room, PDF, PNG, or Notium file.

Ready workspace

Your first Notium board is one click away.

No login wall for the first local board. Build first, account later.

Open Ultimate whiteboard