Multi-List Compare & Venn Diagram Maker
Compare 3 or more lists at once. See what's shared across all, exclusive to one, or common to a custom selection.
Try an example:
Type or Drag & Drop a file
Type or Drag & Drop a file
Type or Drag & Drop a file
Output Options
Paste lists above to see results
Frequently Asked Questions
What is multi-list comparison and when should I use it?
Multi-list comparison lets you analyse three or more lists at the same time and understand exactly how they overlap. Use it when you have data from multiple sources - spreadsheet exports, CRM lists, survey responses - and need to know what's common across all of them, what's unique to each one, or what appears in only some.
How do I find items that appear in every list?
By default the Custom Intersection panel opens with all your lists selected in intersect mode, showing only items shared across every list you've entered. This updates in real time as you paste or edit - no button needed. It's the equivalent of a logical AND across all lists.
How do I find items exclusive to just one list?
In the Venn diagram, click the number inside a single circle or ellipse to jump straight to items that belong to that list and no other. In the Custom Intersection panel you can also select just one list and then dismiss the Exact region badge - or keep it active - to switch between "at least in this list" and "only in this list" views.
What is the difference between intersect mode and exact region mode?
Intersect mode (the default) shows items that appear in all of your selected lists - they may also appear in lists you haven't selected. Exact region mode (amber badge) shows items that appear in exactly those lists and nowhere else. Exact mode activates automatically when you click a numbered region in the Venn diagram; click the × on the amber badge to return to intersect mode.
How many lists can I compare at once?
You can compare between 2 and 6 lists at once. Use the Add List button to add a panel, or click the × on any panel to remove it (minimum 2 must remain). The Venn diagram is shown for 2-5 lists; with 6 lists the Custom Intersection panel still works normally. There is no item limit per list. For comparing just two lists, Compare Two Lists offers a simpler A/B interface.
What does the Venn diagram show, and can I export it?
The Venn diagram gives a visual overview of how your lists overlap. Each number represents how many items fall in that exact region. Click a number to see those items in the Custom Intersection panel; click a list label to see all items in that list. Use the theme swatches to change the colour scheme, and choose from four layout styles - Classic, Spread, Petal, or Heart. The SVG and PNG buttons download the diagram as an image.
Can I compare lists case-insensitively or ignore extra spaces?
Yes. Open the Options panel and uncheck "Case Sensitive" to treat uppercase and lowercase as equal. You can also enable "Ignore Leading/Trailing Spaces" and "Ignore Extra Spaces" to normalise whitespace before comparing. All options update results instantly.
Can I upload files to the input panels instead of pasting?
Yes - each list panel has an upload button in its toolbar. You can also drag and drop a file directly onto any input area. Plain text (.txt), CSV (.csv), TSV (.tsv), and Markdown (.md) files up to 5 MB are supported. Each panel accepts its own file independently, so you can upload different files to each list.
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