Input
0 charsDuplicates are removed from top to bottom — first occurrence is kept.
Off treats “Apple” and “apple” as the same line.
Result
· No duplicatesCtrl + Enter re-run · Esc clear all
Why remove duplicate lines?
Lists copied from spreadsheets, CRM exports, or chat logs often repeat the same row. Scanning for duplicates by hand is slow and error-prone. This free Remove Duplicate Lines tool keeps the first occurrence of each line and drops the rest — privately in your browser, without uploading the list.
Popular use cases
- Spreadsheet and CSV columns: Deduplicate pasted columns of emails, SKUs, or names before you import them elsewhere.
- Bullet and checklist cleanup: Strip repeated bullets from notes, meeting agendas, or slide outlines.
- Log and dump lists: Clean repeated paths, URLs, or IDs from exported logs before sharing.
- Case-sensitive control: Use the case-sensitive option when “Apple” and “apple” should stay as separate lines.
How it works
- Paste your list: Put one item per line in the input box.
- Deduplicate: The tool keeps the first occurrence of each line and removes later repeats locally.
- Copy the clean list: Copy the result into Excel, Docs, or your next workflow step.
Browse every utility on the tools hub or return to the Paragraph Splitter homepage.
Frequently asked questions
Does removing duplicates upload my list?
- No. Deduplication runs entirely in your browser. Nothing is sent to our servers.
Which duplicate is kept?
- The first occurrence of each line is kept; later identical lines are removed from top to bottom.
Can I ignore letter case when comparing lines?
- Yes. Turn off case-sensitive matching if you want Apple and apple treated as the same line.