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Text utility
Duplicate Line Remover
Clean text lists by removing duplicate lines, extracting repeated rows, trimming whitespace, ignoring case, removing blanks, and sorting output locally in your browser.
Line stats
Duplicate summary
Total lines0
Blank lines0
Unique lines0
Duplicate groups0
Removed rows0
Output lines0
Duplicate groups
| Line | Count | First row |
|---|
Popular duplicate line tasks
Mode reference
| Mode | What it returns | Best for |
|---|---|---|
| Keep first unique lines | One copy of each line, preserving the first occurrence | Cleaning email lists, keywords, IDs |
| Show duplicate lines only | One row for each value that appears more than once | Finding repeated records |
| Show removed duplicate occurrences | The extra repeated rows that were removed | Auditing what changed |
| Show line counts | Each unique line with its occurrence count | Quick frequency analysis |
Duplicate line notes
Local processingYour list is processed in the browser and is not uploaded.
Case sensitivityCase-insensitive mode treats Apple, apple, and APPLE as the same line.
Whitespace rulesTrim and collapse options help clean copied spreadsheets, logs, and keyword exports.
Audit modeUse removed occurrences or counts to understand exactly which lines were duplicated.
FAQ
Does the tool keep the first duplicate or the last?
The default unique mode keeps the first occurrence and removes later duplicates.
Can I remove empty lines at the same time?
Yes. Keep the remove blank lines option enabled to omit empty rows from the output.
Can I sort after removing duplicates?
Yes. Choose A to Z or Z to A in the sort output control.