Remove Unique Items

This tool removes all items that appear only once and keeps only repeated entries. You can choose to display all instances of repeated lines or just one per value. It supports case sensitivity and basic cleanup options like trimming and skipping empty lines.

Paste your input above or import a file below.
No file chosen
Supported file types: .txt, .csv, .tsv, .log, .json, .xml, .md, .ini, .yaml, .yml, .html, .htm, .css
Total items: 0
Options
Trim lines
Ignore empty lines
Case-sensitive
Show all repeating instances

How to Use:

  1. Paste or import your list into the Input List box.
  2. Adjust the Options:
    • Trim lines: remove whitespace
    • Ignore empty lines
    • Case-sensitive: treat differently cased words as unique
    • Show all repeating instances: show every occurrence or just one of each
  3. The result appears instantly in the Repeating Only box.
  4. Use Copy Output or Export to File as needed.
  5. Click Clear All to reset the tool.

Example:

Input:

apple
banana
apple
cherry
date
banana
fig
fig
lemon

Output (all instances ON):

apple
banana
apple
banana
banana
fig
fig

Output (all instances OFF):

apple
banana
fig

Common Use Cases:

Use this tool to clean up datasets by filtering out non-duplicates. It’s ideal for finding and extracting patterns, repeated errors, redundant entries, or verifying consistency in list-based data.

Useful Tools & Suggestions:

After removing unique items, Find Repeating List Items can give you a clearer view of what’s left especially if you’re trying to analyze patterns or duplicates. And if the list still feels cluttered, Trim List Items helps clean up any lingering whitespace or formatting quirks.

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