Remove Duplicate Lines from Text

Deduplicate any list or text block by removing repeated lines while keeping order intact.

Find and remove duplicate lines from any text or list. Free, fast, browser-based. The first occurrence of each line is kept and every later exact duplicate.

Remove Duplicate Lines from Text examples

InputOutput
apple banana apple cherry bananaapple banana cherry

How the remove duplicate lines from text works

  1. The first occurrence of each line is kept.
  2. Later exact duplicates are discarded.
  3. Order of the surviving lines is unchanged.

Rules and edge cases

  • The first occurrence of each line is kept and every later exact duplicate is removed.
  • Matching is exact and case-sensitive: Apple and apple are two different lines. Lowercase the text first for case-insensitive de-duplication.
  • Trailing spaces make two otherwise identical lines different, so clean spacing before de-duplicating.
  • The order of the surviving lines is preserved — nothing is sorted.

Frequently asked questions

How do I de-duplicate ignoring case and spacing?

Run the text through the lowercase converter and the extra space remover first, then remove duplicates. Otherwise "Apple " and "apple" both survive.

Can I see which lines were duplicates?

The tool returns the cleaned list rather than a report. Compare the before and after line counts, or use the text comparison tool to see what disappeared.