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🧹 Remove Duplicate Lines
Strip duplicate lines from text and clean whitespace. Quick online tool to tidy lists and datasets.
Remove Duplicate Lines
Paste text below to automatically remove duplicate lines. Empty lines are ignored. Use the case-sensitive option to distinguish between “Hello” and “hello”.
How duplicate removal works
- Paste any list of values or records into the input area.
- Choose whether comparisons should be case-sensitiveso “Apple” and “apple” can be treated as different entries.
- Review the cleaned output and copy it, or download it directly into your next spreadsheet import.
Where duplicate removal helps
- Preparing CSV data before uploading to a CRM or marketing tool.
- Cleaning product SKUs, coupon codes, or inventory identifiers.
- Removing repeated survey answers before running quick analyses.
Data hygiene tips
Consider trimming whitespace in your original source before exporting, and keep a copy of the raw list so you can trace any accidental removals. When case sensitivity is off, the tool normalizes lines using lowercase checks – perfect for eliminating duplicates that differ only by capitalization.
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