Duplicate Line Remover
Remove duplicate lines from text, keeping only unique entries.
10 lines
7 lines
Removed 3 duplicate lines — kept 7 unique out of 10 total.
Removing duplicate lines from text
This tool walks through your text line by line and removes any line that has already appeared, preserving the original order. Case insensitivemode treats "Apple" and "apple" as duplicates. Trim whitespace ignores leading and trailing spaces so indented versions of the same line are considered equal. Keep last occurrence reverses the preference — instead of keeping the first time a line appears, it keeps the most recent one. Ideal for cleaning email lists, log files, and CSV data. All processing runs privately in your browser.
Private & free — this tool runs entirely in your browser.
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