Free & No Sign-Up Required

Remove duplicate lines
from any list

Paste your list, pick your options, and get a clean result in seconds. Works for email lists, keywords, URLs, names, and more.

Cleaning Options
Input 0 lines
Output 0 lines

Clean any list in three steps

remove-lines.com processes everything in your browser — your data never leaves your device.

01
Paste your list

Copy any list — emails, keywords, names, URLs, anything — and paste it into the input box. One item per line.

02
Choose your options

Toggle the cleaning options you need: remove duplicates, sort, trim spaces, keep only emails, strip titles, and more.

03
Copy or download

Click "Process List" and instantly copy the result or download it as a .txt file, ready to use anywhere.

Everything you need to clean lists

A powerful set of tools built for marketers, developers, data analysts, and anyone who works with lists.

🔁
Duplicate Removal

Remove exact duplicates or use case-insensitive mode to treat "Apple" and "apple" as the same item.

📧
Email List Cleaning

Keep only valid email addresses, strip email domains, and automatically detect when your list is a mailing list.

🏷️
Remove Titles & Gender Prefixes

Strip Mr, Mrs, Ms, Miss, Mx, Dr, Prof and other honorifics from contact names in bulk with one click.

🔤
Sort & Order

Sort A→Z, Z→A, by line length, or reverse the current order of your list instantly.

✂️
Whitespace & Blank Lines

Trim leading/trailing spaces from every line and remove empty lines that clutter your list.

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100% Private

All processing happens locally in your browser. Your data is never uploaded to any server. Completely safe for sensitive lists.

Frequently asked questions

Is remove-lines.com free?
Yes — 100% free, forever. No sign-up, no account, no credit card required. The service is supported by advertising.
Is my data private and secure?
Absolutely. All list processing happens entirely inside your web browser using JavaScript. Your list is never sent to our servers, so your data stays completely private.
How many lines can I process?
Since processing happens in your browser, there is no server-side limit. In practice, modern browsers can handle hundreds of thousands of lines without issue. Very large lists (millions of lines) may be slow depending on your device.
What does "Keep Truly Unique Only" mean?
"Remove Duplicates" keeps the first occurrence of each duplicate and removes the rest. "Keep Truly Unique Only" goes further — it removes any line that appeared more than once, including its first occurrence. You're left with only lines that were unique from the very beginning.
Can I combine multiple options?
Yes! You can activate as many options as you like simultaneously. They are applied in a logical order: trim whitespace first, then remove blanks, then remove duplicates, then filter/transform, then sort.
What does "Remove Titles/Gender" do exactly?
It strips common honorifics from the start of each line: Mr, Mrs, Ms, Miss, Mx, Dr, Prof, Sir, Rev (with or without a period). For example "Mrs. Jane Smith" becomes "Jane Smith". Useful when cleaning CRM exports or mailing lists.
What does "Keep Emails Only" do?
It scans each line and keeps only lines that contain a valid email address format (something@something.tld). Lines without an email are discarded. Great for extracting emails from messy data.
Can I download the result?
Yes. After processing, click "Download .txt" to save the cleaned list as a plain text file to your device.

Ready to clean your list?

Paste it above and get a clean result in seconds — no sign-up, completely free.

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