Remove Duplicate Lines Online — Free Text Dedup Tool
Remove duplicate lines from text online for free. Preserve order or sort results. Instant cleanup for lists, logs, and pasted data. No signup required.
Remove duplicate lines from a text list. Keep only unique lines, with optional case-insensitive matching and sorting.
How to use Remove Duplicate Lines Online — Free Text Dedup Tool
- Paste your list of lines into the input.
- Choose options: case-insensitive, trim whitespace, or sort output.
- Click Process to remove duplicates.
- Copy the unique lines from the output.
Features
- Removes exact duplicate lines.
- Optional case-insensitive matching.
- Optional whitespace trimming before comparison.
- Optional alphabetical sorting of results.
FAQ
Does this preserve the original order?
Yes, by default the first occurrence of each line is kept and subsequent duplicates are removed, preserving the original order. Enable the sort option if you want alphabetical order instead.
What counts as a duplicate?
By default, lines must match exactly (including whitespace). Enable 'case-insensitive' to treat 'Hello' and 'hello' as duplicates, and 'trim whitespace' to ignore leading/trailing spaces.
Can I remove duplicates from a CSV?
Yes, but this tool works on full lines. If your CSV has duplicate rows, paste the entire file. For duplicate values within a single column, use a spreadsheet tool instead.