Remove Duplicate Lines
Remove Duplicate Lines exists to do one job well: clean duplicates from a list. All counting, matching and rewriting happens in JavaScript on the page itself, so even long confidential drafts stay in your browser. It is used most by writers and editors cleaning up a draft before submission. Handles full Unicode, so accented Latin, Cyrillic, Arabic, Chinese and emoji all count correctly. Free, unlimited, and free of the upsells most tools of this kind carry.
Key features
- Handles full Unicode, so accented Latin, Cyrillic, Arabic, Chinese and emoji all count correctly.
- Pasted rich text is reduced to plain text — formatting is not carried over.
- Works on desktop, tablet and phone — no separate app to install.
- No ads interrupting the tool itself, and no upsell before the result.
How to use Remove Duplicate Lines
- Paste your text: Paste or type into the box above. It accepts anything from a sentence to a full manuscript.
- Choose what you need: Set the options that match your task — the result updates as you change them.
- Copy the result: Copy the output with one click and paste it wherever you are working.
Frequently asked questions
- How much text can I paste in? — Tens of thousands of words is comfortable. The only real limit is how much your browser will hold.
- Is my text stored when I use Remove Duplicate Lines? — No. Remove Duplicate Lines processes the text in the page itself. Nothing is transmitted or saved, which matters for unpublished or confidential writing.
- Is there any signup? — None. Remove Duplicate Lines has no account, no email capture and no usage cap.
- Can I use it offline? — Once the page has loaded, yes — the work happens locally, so a dropped connection will not interrupt you.