Does this preserve the original order of unique items?

Yes, it keeps the first occurrence of each line and removes subsequent duplicates.

Are empty blank lines removed?

Yes, trailing whitespace and blank lines are cleaned automatically.

100% Client-Side • Zero Data Leaves Browser

Deduplicate lists of emails, keywords, IDs, or URLs while preserving original order in milliseconds.

Active Converter / Utility

Input Data Upload File

Output Result