List analyzer
Count totals, uniques and duplicates in a pasted list.
Analysis & comparison100% client-side
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About this tool
Paste a list — one item per line, or comma or semicolon separated — and get the total count, the unique values, and every duplicate with the number of times it appears. It is the fastest way to answer 'did this export contain the same ID twice?'.
Trimming, case-insensitive matching and blank-line removal are all optional, and the deduplicated list can be sorted and copied back out, which makes this useful for cleaning up an ID list before it goes into a query.
How to use it
- 1Paste your list and choose the separator.
- 2Toggle trimming, case sensitivity and blank handling.
- 3Read the counts, then copy the unique or duplicate set.
Privacy
This tool runs entirely in your browser. Nothing you type or paste is sent to a server, and your local history is stored only on this device.
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