Remove duplicate lines from any list or text block.
Paste your list or text into the input box and click Remove Duplicate Lines. The first occurrence of each line is kept; all subsequent duplicates are removed. The result appears in the output box ready to copy.
Lines are compared exactly as written — matching is case-sensitive, so "Apple" and "apple" are treated as different lines. The original order of the first occurrence of each line is preserved. Empty lines are also deduplicated.
Combine multiple sources of email addresses and remove duplicates before importing into a mailing platform.
SEO keyword research often produces overlapping lists from different tools. Remove duplicates to get a clean, unique set.
Server and application logs can contain many repeated lines for recurring events. Deduplication lets you see unique events at a glance.
If you're building a custom word list for custom typing practice, remove duplicates first for a cleaner practice session.
Paste the list into the input box with one entry per line and click Remove Duplicate Lines. The tool keeps the first occurrence of every line and deletes any exact repeats below it. The cleaned list appears in the output box, ready to copy back into your spreadsheet or file.
Yes. Lines are compared exactly as written, so Apple and apple are treated as two different lines and both are kept. If you want case-insensitive deduplication, run the text through the Case Converter first to lowercase everything, then remove duplicates — the comparison will then ignore the original capitalisation differences.
Yes. Unlike sort-based deduplication in spreadsheets or on the command line, this tool preserves the original order: each line stays where it first appeared, and only the later repeats are dropped. That makes it safe for ordered data like ranked keyword lists or step-by-step instructions.