Whiteboard by Lumin
ChatGPT pluginYour ideas. Your device.
Draw and refine sketches, diagrams, and visual explanations on an editable Excalidraw canvas. In Codex desktop, save ordinary .excalidraw files in your chat workspace and reopen the same file later. Manual drawing and agent edits use that file, with stale-save protection. The hosted service supplies the editor and does not store your boards. Browser and mobile use manual file import and download; automatic chat-local saving requires desktop file support. No Whiteboard account is required. Cross-device sync and multi-user collaboration are not included.
- Featured
- No
not on the featured shelf
Movement
From our daily snapshots over the last 30 days.
Rank by placement
Rank in Productivity
In its category
How this plugin compares with others in the same category. Positions are counted within the category, not across the whole directory.
Productivity1,890th of 2,680 by placement
| # | Plugin | Position | 7d |
|---|---|---|---|
| 1888 | #8076 | 491places up | |
| 1889 | #8077 | 311places down | |
| 1890 | #8080 | — | |
| 1891 | #8082 | — | |
| 1892 | #8089 | — |
Example prompts
- “Create a whiteboard and save it with this chat.”
- “Refine the diagram on my open whiteboard.”
- “Turn this explanation into a simple flowchart.”
Skills
whiteboard
Operate Whiteboard by Lumin to create, open, save, and edit local .excalidraw files in a Codex chat. Use whenever a task reads or changes a board, including edits to the board already open.
whiteboard-layout
Arrange and tidy diagrams on Whiteboard by Lumin with readable spacing, alignment, groups, and connectors. Use for crowded boards, flowcharts, system diagrams, and visual organization; preserve the meaning and scope of existing content.
whiteboard-storytelling
Turn an explanation, process, comparison, or idea into a visual story on Whiteboard by Lumin. Use when deciding what to show and how readers should follow it, rather than for file operations or a small label edit.
whiteboard-style
Style Whiteboard by Lumin drawings with Excalidraw's handwritten Excalifont, readable text, restrained color, and consistent strokes. Use for new diagrams or a requested visual polish; respect an existing board's style during small edits.
- Categories
- Sign-in
- On Install
- Capabilities
- Interactive, Write
- Availability
- Available
- Version
- 0.2.1
- Created
- October 13, 2026
- More info
- Sponsorship
- Promote this plugin