Remove Duplicate Lines
Dedupe a pasted list — emails, URLs, keywords. Keep first or last, ignore case, optional sort.
Quick answer: Dedupe a pasted list — emails, URLs, keywords. Keep first or last, ignore case, optional sort.
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Frequently asked questions
- How do I remove duplicate lines from a list?
- Paste the list and the deduped result appears immediately. Choose to keep the first or last occurrence, and optionally ignore case, trim whitespace or sort the output.
- Can I ignore uppercase/lowercase duplicates?
- Yes. Toggle "Ignore case" so EMAIL@x.com and email@x.com are treated as the same line.
- Can I remove duplicates and sort at the same time?
- Yes. Toggle "Sort after dedupe" and the unique lines come out alphabetically — perfect for keyword lists or contact exports.
- How do I dedupe a list of emails?
- Paste the emails (one per line), turn on "Ignore case" and "Trim whitespace", and copy the result. Useful before importing into a CRM or sending bulk email.
- How do I dedupe a list of URLs?
- Paste the URLs and dedupe with "Ignore case" off (URLs are case-sensitive after the domain). Use Sort Lines afterwards if you need them in order.
- What's the difference between duplicate lines and duplicate words?
- Duplicate lines compares whole lines as units. To find duplicate words, paste each word on its own line first — or use Find and Replace for in-line dedupe.
- Can I keep only duplicates (find duplicates)?
- This tool removes duplicates. To find them, paste your list, dedupe a copy, then compare the two — the missing lines are the duplicates.
- How do I remove duplicates in Excel vs text?
- Excel works at row level inside a spreadsheet. This tool works on plain text lists, which is faster for one-off dedupes from emails, exports or quick lookups.
- Does this work with comma-separated lists?
- Comma-separated values need to be on separate lines first. Split on commas (use Find and Replace: ", " → "\n") then dedupe.
- Can I dedupe while trimming spaces?
- Yes. Toggle "Trim whitespace" so "hello " and "hello" are treated as the same line.