Duplicate Line Remover
Remove repeated lines with case and whitespace controls.
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Text stays in this tab. Maximum 200,000 characters.
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Your input does not need to be uploaded to an EvryNest server. Nothing is saved automatically.
How It Works
- 1Paste your lines
Enter one item on each line.
- 2Choose matching rules
Set case sensitivity, whitespace trimming and first or last retention.
- 3Review unique lines
Check the resulting count and export the deduplicated text.
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Frequently Asked Questions
How does Duplicate Line Remover work?
Preserve either the first or last occurrence. Case sensitivity and optional whitespace trimming determine which lines match.
Does this tool upload or save my input?
Core processing happens locally in this browser tab. Input and output are not sent to a processing server or stored automatically. Copy and download only occur when you request them.
What happens with large or invalid inputs?
Text tools accept up to 200,000 characters. Numeric sorting and diff apply additional checks. Invalid input displays an error so you can correct it.