Find Common Items in Lists
Find shared items across lists. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Find Common Items in Lists
- 1. Paste the first list. Put one item per line into the main input pane, such as one side of the two groups you want to intersect.
- 2. Paste the second list. Add the other list, one item per line, into the Second list field. The tool compares both lists to find entries that appear in each.
- 3. Copy the shared items. The output shows only the items present in both lists. Copy this intersection to see exactly what the two groups have in common.
When to use Find Common Items in Lists
Find Common Items in Lists computes the intersection of two lists, keeping only entries that appear in both. Reach for it whenever you need overlap rather than a full diff, such as finding shared contacts, matching tags, or common inventory.
- Finding mutual contacts between two exports. You exported contacts from two different apps and want to know which people appear in both. Paste each contact list and read off the shared names.
- Matching tags across two content sets. Two articles were tagged separately and you want to know which tags overlap for cross-linking. Paste both tag lists to find the shared tags.
- Checking inventory overlap between two warehouses. Two warehouse inventories need to be checked for SKUs stocked in both locations. Paste both SKU lists and use the intersection to plan consolidated shipments.
- Cross-referencing attendee lists. You want to know which people signed up for both a webinar and a follow-up event. Paste the two sign-up lists and read off the names that appear in both.
Examples
Intersect with a second list of bananas and cherries
Input
apples bananas
Output
bananas
About the Find Common Items in Lists tool
Find Common Items in Lists runs as plain JavaScript in your browser tab, with no server behind it. Find shared items across lists. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's List Tools section, 114 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with the Second list (one item per line) setting, and the result refreshes the moment you change it. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Find Common Items in Lists free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.