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Importing a spreadsheet
Drop a CSV on the page or use Import. Columns are matched by their header, in English, Korean, Japanese or Chinese. Anything not recognised is left alone, and you can change any guess before importing.
| Column | Also accepted | Notes |
|---|---|---|
| ID | No, #, 번호, 番号, 編號 | Keep this column if you want per-task colours to survive a round trip. |
| Name | Task, 작업명, タスク名, 工作項目 | Required. Rows without one are skipped. |
| Start | Start date, 시작일, 開始日, 開始日期 | |
| Finish | End, Due, 종료일, 終了日, 結束日期 | Inclusive. A one-day task starts and finishes on the same date. |
| Duration | Days, 기간, 工期, 歷時 | 5, 5d, 1w, 8h. Stored in days. |
| Progress | % complete, 진행률, 進捗率, 進度 | 50, 50% or 0.5. |
| Predecessors | Depends on, 선행작업, 先行タスク, 前置作業 | See below. |
| Parent ID | WBS, Outline level, 상위작업, 親タスク | Any one of these builds the task tree. |
| Milestone | 마일스톤, マイルストーン, 里程碑 | Or just give the task a duration of 0. |
| Assignee | Owner, 담당자, 担当者, 負責人 | Separate several with a semicolon. |
Dates
The format is detected per column, not per cell, because one sheet uses one format. 2026-08-03, 03/08/2026, 2026年8月3日 and Excel's date serial numbers are all read. Whatever is detected is shown as a dropdown before you import, so a wrong guess is one click to fix.
Dependencies
Write them the way a spreadsheet already does. Separate several with a comma or a semicolon.
| Written as | Means |
|---|---|
3 | Starts after task 3 finishes |
3FS+2 | Starts 2 days after task 3 finishes |
4SS | Starts when task 4 starts |
5FF-1 | Finishes 1 day before task 5 finishes |
3;4SS | Both of the above |
A reference is matched against the ID column first, then the WBS column, then the row number, then the task name. If a set of links forms a loop, the loop is reported by name rather than quietly removed — the charts still draw.
Exporting
| Format | What you get |
|---|---|
| PNG | A picture, exactly as drawn on screen. Choose 1×, 2× or 3×. |
| SVG | Vector, text stays text and stays editable in Illustrator, Figma or Inkscape. Uses fonts installed on whoever opens it. |
| One page per chart, sized to A4, A3 or Letter. The chart is an image inside the PDF, so it looks the same everywhere. | |
| CSV | The schedule only. Colours and layout are dropped, so it opens cleanly in Excel, Google Sheets or MS Project. |
| Project file | Everything, including the design. This is what to keep if you want to carry on later. |
Keyboard
| Enter | Add a task below |
| Tab / Shift+Tab | Next / previous cell |
| Alt+→ / Alt+← | Indent / outdent |
| Ctrl+Z / Ctrl+Y | Undo / redo |
| Delete | Delete the selected task |
| Esc | Cancel a drag |
Where your data lives
The plan is kept in this browser's storage and nowhere else. Clearing your browser data deletes it, and there is no backup — export a project file if the plan matters. Details on the Privacy Policy page.