🔁

Remove Duplicate Lines from Text Online

Text Tool

Remove duplicate lines from any text instantly. Supports case-sensitive or case-insensitive matching, whitespace trimming, and blank line removal. Perfect for cleaning email lists, data exports, log files, and keyword lists.

⚡

Next Step — Complete Your Workflow

📊

Count Unique Lines →

Count how many unique entries remain after deduplication

How to use Remove Duplicate Lines from Text Online

1Enter your values in the fields above.
2Results calculate instantly as you type — no button click needed for most tools.
3Copy the result using the Copy button.
4Use the Next Step workflow to chain into related tools.
5All processing runs locally in your browser. No data is transmitted.

Frequently Asked Questions

Does this tool preserve the order of lines?

Yes. The first occurrence of each duplicate line is kept; all subsequent duplicates are removed. Original order is preserved.

Can I deduplicate a list of email addresses?

Yes. Paste your email list (one per line), toggle case-insensitive mode (since emails are case-insensitive), and click deduplicate.