🗑️ List Cleaner

Remove Duplicate Lines

Paste any list — emails, keywords, URLs, names — and remove every repeated line instantly. Case options, sort, trim included.

0Total lines
0Unique lines
0Duplicates
0Blank lines
Input 0 lines
Output — Unique lines 0 lines

How does this duplicate remover work?

Paste any list — one item per line — and the tool scans every line, keeps the first occurrence, and removes every repeat. It runs entirely in your browser, so nothing is ever sent to a server.

The case-sensitive toggle decides whether "Apple" and "apple" are the same entry. Trim whitespace handles lists with irregular spacing. Sort outputs the unique results in alphabetical order.

📧 Email lists

Clean mailing lists by removing duplicate addresses before your next campaign.

🔑 Keyword lists

Deduplicate SEO keyword lists exported from tools like Ahrefs or SEMrush.

🔗 URL lists

Remove repeated URLs from crawl exports or scraped site maps instantly.

📋 Any list

Names, product SKUs, hashtags, IDs — any one-item-per-line list is supported.

Frequently asked questions

Paste your list into the input box and click Remove Duplicates. The tool keeps the first occurrence of each line and removes all subsequent duplicates automatically.
By default matching is case-insensitive, so "Apple" and "apple" count as duplicates. Enable the Case-Sensitive option to treat them as different entries.
Yes — enable Sort A→Z before clicking Remove Duplicates and the unique lines will be returned in alphabetical order.
Enable the Remove Blank Lines option to strip all empty lines from the output. By default blank lines are preserved as part of your list structure.
The tool runs entirely in your browser and can easily handle tens of thousands of lines. There is no server-side limit — performance depends only on your device.
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