Remove Duplicates

Remove duplicate and empty lines from your text lists.

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How to Use Remove Duplicates

  1. Enter or paste your input in the text area above
  2. The tool will process your input automatically or click the action button
  3. Copy the result using the copy button

Frequently Asked Questions

How does duplicate detection work?

The tool compares each line and keeps only the first occurrence. You can toggle case-sensitive matching and whitespace trimming.

What happens to empty lines?

Empty lines are preserved in their original positions.

Sources & references

Primary references: MDN: JavaScript Set.

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