Remove Duplicate Lines
Quick Tips
- • This tool runs entirely in your browser - your data stays private.
- • Press Ctrl+V (Cmd+V on Mac) to quickly paste text.
- • Use the Copy button to save your result to clipboard.
- • Bookmark this page for quick access!
Remove duplicate lines, keeping unique entries.
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Examples
apple banana apple
apple banana
Why Use This Tool?
What problems does this solve?
Lists and data files often contain duplicate lines from merging sources or repeated entries. Manually finding and removing duplicates in large files is time-consuming.
Common use cases:
- Cleaning up log files with repeated entries
- Deduplicating data exports before processing
- Consolidating lists from multiple sources
Who benefits from this tool?
Data analysts cleaning datasets. System administrators processing logs. Developers debugging repeated outputs. Anyone working with lists that may have duplicates.
Privacy first: All processing happens in your browser. Your data never leaves your device.
Frequently Asked Questions
Lines must be exactly identical to be considered duplicates.
Yes, "Hello" and "hello" are treated as different.
The first occurrence is kept; subsequent duplicates are removed.
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