Venn Kit

A Venn diagram widget for comparing ideas. Single static page (index.html), no build step.

• Click inside a circle to add a thought; drag chips between zones, or off the diagram to delete.
• Click a circle label to rename it and describe it; click an empty overlap to describe that combination.
• Styling, all point-and-click:
  • Circle popover: color swatches (8 presets + custom picker).
  • Thought popover: its own color plus B / I / S (bold, italic, strikethrough).
  • Palette button (top right): font, text size (S / M / L), background color, default color for all thoughts, and text color.
• Three views of the same data, switched bottom-left:
  • Venn (2–3 groups): the diagram above.
  • Table: thoughts as rows, groups as columns; click a cell to toggle membership, a header or row title to rename, "+" to add a row or column.
  • UpSet: one column per combination that has thoughts, sorted by size; click a column to list its thoughts, drag a thought to another column to move it.
• Up to 8 groups (Venn shows at most 3; adding a 4th switches to UpSet).
• Import (top right): paste a range from Excel/Sheets or upload an .xlsx/.csv. First column = thought names, first row = group names, any filled cell = member. Shows a preview and replaces the current data on confirm.
• Everything saves to localStorage.

Run locally: open index.html in a browser.