Text Tools
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Duplicate Line Remover
Clean lists and logs by deleting repeated lines. Optionally ignore case so Apple and apple are treated as the same line.
Features
- Keep first occurrence of each line
- Optional case-insensitive matching
- Shows how many duplicates were removed
- One-click copy
How to use Dedupe Lines
- 1Paste text with one item per line.
- 2Toggle case-insensitive matching if needed.
- 3Copy the deduplicated output.
Examples
Remove repeats
Inputapple banana appleOutput
apple banana
About Dedupe Lines
Drop repeated lines from lists, CSV columns, and log snippets while keeping the first occurrence. Optional case-insensitive compare treats Apple and apple as the same line.
Frequently asked questions
Yes. The first time a line appears is kept; later repeats are dropped.
Yes. Multiple empty lines collapse to a single empty line if they repeat consecutively after the first blank.
No. Deduplication runs entirely in your browser.