Paste two or three lists to find common items, unique entries, and duplicates. Free, private, and lightning fast.
Everything you need to compare, analyze, and merge your lists.
Compare 2-3 lists side-by-side to find what's common and what's unique to each list.
Instantly identify items that appear in all your lists (intersection).
See which items are unique to each list, helping you spot differences quickly.
Merge multiple lists into one and automatically remove duplicates.
Download comparison results as CSV or TXT files for further analysis.
All processing happens in your browser. Your data never leaves your computer.
Find duplicate contacts across multiple address books or email lists.
Compare subscriber lists to find new subscribers or identify unsubscribes.
Compare inventory lists from different sources to identify discrepancies.
Find and remove duplicate entries across multiple data sources.
Compare class rosters to identify students in multiple classes.
Compare product lists from different vendors to find matches and differences.
You can compare 2-4 lists simultaneously. For most use cases, comparing 2 lists is sufficient to find common items and differences.
Common items are entries that appear in ALL lists (intersection). Merged items combine all lists and remove duplicates (union).
Yes! All comparison happens in your browser using JavaScript. Your data never leaves your computer or gets uploaded to any server.
Yes! You can toggle case-sensitive comparison on or off. By default, comparisons are case-insensitive (e.g., "Apple" and "apple" are treated as the same).
After comparing, click "Export TXT" for a formatted text report or "Export CSV" to open results in Excel or Google Sheets.
You can compare lists with up to 50,000 items each. For very large lists (10,000+ items), you may see a performance warning, but the tool will still work.
Yes! The comparison tool works with all UTF-8 characters, including special characters, numbers, and emojis.
Copy the column you want to compare from your CSV file and paste it into one of the list input boxes. Each row will be treated as a separate item.
Copy and paste your items into List 1 and List 2 (one item per line).
Select case sensitivity, whitespace trimming, and empty line handling.
Press the "Compare Lists" button to instantly see results.
Copy results or export as CSV/TXT for further analysis.
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