Help
About this tool
Paste text to detect duplicate lines or repeated words, see their occurrence counts, and copy a sorted summary. All processing happens locally in your browser.
How to use
- Paste your list or text into the input box.
- Switch between counting by line or by word, and toggle case sensitivity.
- Copy the list of duplicates with their counts.
Is my data uploaded anywhere?
No. Duplicate detection happens entirely in your browser.
Can I find repeated words instead of lines?
Yes. Switch to Word mode to count repeated words rather than whole lines.