Remove duplicate lines from a list, with options to ignore case, trim whitespace, and drop blank lines.
Cleaning up email lists, keyword lists, logs, and CSV columns.
Paste your list
Add your list with one item per line.
Set the options
Choose whether to ignore case, trim whitespace, and remove blank lines.
Copy the unique lines
Read how many duplicates were removed, then copy the cleaned list.
Lists exported from spreadsheets, logs, or scraped pages often contain repeated entries. Removing duplicates by hand is tedious; this tool keeps only the unique lines in one click.
Email & contact lists
Remove repeated addresses before importing into a mailing tool.
Keyword research
De-duplicate keyword and tag lists for SEO and ads.
Log analysis
Collapse repeated log lines to spot unique entries.
Yes. The first occurrence of each line is kept in its original position.
Yes. Enable “ignore case” and “trim whitespace” so near-identical lines are treated as duplicates.
It handles large lists comfortably since everything runs in your browser.