Find Repeating List Items

This tool scans your input list and finds items that appear more than once. You can view duplicates with or without frequency counts, control case sensitivity, and apply live filters like trimming or ignoring 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 counts

How to Use:

  1. Paste or import your list into the Input List box.
  2. Adjust the Options:
    • Trim lines: removes leading/trailing spaces
    • Ignore empty lines
    • Case-sensitive: treats apple and Apple as different
    • Show counts: displays how many times each item repeats
  3. Results appear in the Repeating Items box in real-time.
  4. Use Copy Output or Export to File to save results.
  5. Click Clear All to reset the tool.

Example:

Input:

apple
banana
apple
cherry
banana
banana
date
Apple

With case-insensitive + show counts ON:

apple (2)
banana (3)

With case-sensitive ON:

apple (2)
banana (3)

Common Use Cases:

Use this tool to detect duplicate entries in lists of names, tags, email addresses, or any structured data. It’s ideal for data cleaning, frequency analysis, and finding redundancies in user input or logs.

Useful Tools & Suggestions:

If you’re finding repeating items, Find Duplicate List Items is a natural pairing it shows exactly which entries occur more than once. Once you’ve spotted the repeats, Filter a List helps you isolate or remove them depending on what you’re trying to keep. It’s especially useful for cleaning data, spotting trends, or preventing redundancy in lists you need to use or share.

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