Remove duplicate lines from text. Keep only unique entries.
Paste a list of lines and instantly see only the unique entries. Perfect for cleaning up email lists, keyword lists, product SKUs, data exports, or any text that has repeated lines.
Options let you control whether matching is case-sensitive, whether whitespace is trimmed, and whether the output should be sorted alphabetically. Everything runs in your browser — nothing is uploaded.
By default, the original order is preserved (first occurrence kept). Enable the 'Sort A→Z' option if you want alphabetical output.
By default yes — 'Apple' and 'apple' are treated as different. Uncheck 'Case sensitive' to treat them as the same.
Yes. The tool runs in your browser and handles tens of thousands of lines efficiently. For very large files (100K+ lines), processing may take a second.
Paste your text or data into the box above. The tool identifies and removes all duplicate lines, keeping only unique entries. You can also sort the results alphabetically, trim whitespace from each line, and ignore case differences when comparing.
Duplicate data causes problems everywhere. In email lists, duplicates mean wasted sends and higher costs. In spreadsheets, they skew calculations and reports. In code, duplicate entries in configuration files cause unexpected behavior. In SEO, duplicate URLs in keyword lists waste crawl budget.
This tool processes text line by line, making it perfect for cleaning up lists exported from Excel, CSV files, log outputs, database queries, and any text-based data where duplicates need to go.
Working with regular expressions? Use our Regex Tester to find and filter patterns before deduplication.