Remove Duplicate Lines

Remove duplicate lines and keep only unique text lines.

Input data is processed in your browser
Data is never sent to a server

Tool

0 lines

or drag & drop a file

What is Remove Duplicate Lines?

Remove Duplicate Lines removes repeated lines from text in bulk. It is useful for cleaning up log files, deduplicating lists, and tidying data.

How to Use

  1. Paste text containing duplicate lines into the input field.
  2. Configure options such as case sensitivity and blank line handling.
  3. Click "Remove" to see the deduplicated result.
  4. Click "Copy Result" to copy to clipboard.

FAQ

Is case sensitivity taken into account?

By default, comparison is case-sensitive. You can switch to case-insensitive with the option toggle.

Is the original line order preserved?

Yes. The first occurrence of each line is kept and subsequent duplicates are removed. The order is preserved.