100% Free, Private, In-Browser Tool
No uploads. No accounts. No limits. Your files never leave your device.
Remove Duplicate Lines
Scrub redundant or duplicate lines out of any list or text block. Quick, offline-capable, and secure.
Original Lines0
Unique Lines0
Duplicates Removed0
0% SavedList Input
0 linesSupports Drag & Drop
Configuration Options
Cleaned Output
0 linesKNOWLEDGE BASE
Frequently Asked Questions
Everything you need to know about processing files securely in your browser
How does the duplicate removal tool work?
It parses your input line-by-line and filters out any duplicate lines, keeping only the first (or last) occurrence of each unique line according to your deduplication settings.
Can I ignore whitespace or case sensitivity?
Yes, you can choose to ignore leading/trailing whitespace, ignore inner consecutive spaces, perform case-insensitive comparisons, and ignore empty lines when filtering duplicates.
Is my text uploaded anywhere?
No. The duplicate scrubbing runs entirely in your browser's JavaScript engine, ensuring total privacy for sensitive datasets or lists.
Does the tool show statistics about removed lines?
Yes, the tool displays visual statistics for the total count of original lines, unique lines remaining, and duplicate lines removed, alongside a frequency breakdown table.