Remove Duplicates
Strip repeated lines from any list, log, or dataset instantly.
Options
Summary
Paste or type a line-separated list above. Duplicates are removed instantly as you edit.
About this tool
Remove duplicate lines from lists, logs, CSV rows, or pasted data in one click. Optionally preserve order or sort results to clean messy datasets quickly.
How to use
- Paste your list with one item per line.
- Choose whether to keep the first or last occurrence of duplicates.
- Copy the cleaned output for use in spreadsheets, code, or documents.
Frequently asked questions
- Does it remove empty lines?
- You can trim blank lines depending on your settings. Duplicate non-empty lines are always detected.
- Will the original order be preserved?
- Yes. By default the tool keeps the first occurrence of each line and maintains original order.
- Can I use this for large lists?
- Yes. Processing runs in your browser, so it works on large pasted lists without uploading data.