Remove Duplicate Lines

Working with lines

• Remove Duplicate Lines — keeps the first copy of each line, drops the rest.
• Find Duplicate Lines — lists which lines repeat, and how many times.
• Keep Only Unique Lines — keeps only lines that appear exactly once, dropping every line that has any duplicate at all.
• Count Duplicate Lines — a quick summary of how much repetition is in your text.
• Highlight Duplicate Lines — shows your original text with repeated lines marked.

Words, sentences & paragraphs

• Remove Duplicate Words — keeps the first copy of each word in your text.
• Find Duplicate Words — lists which words repeat, and how many times.
• Remove Duplicate Sentences — drops repeated sentences.
• Remove Duplicate Paragraphs — drops repeated paragraphs.

How it works

Paste your text, pick an operation, and copy the result — nothing leaves your browser.