Remove Duplicate Lines
Remove duplicate lines from text
Remove duplicate lines from any text instantly. Case-sensitive or case-insensitive matching, with options to sort or count duplicates.
How to Use Remove Duplicate Lines
- 1Paste your text into the input box
- 2Choose case-sensitive or case-insensitive matching
- 3Optionally enable "Sort results" to alphabetize the output
- 4Click "Remove Duplicates" to process
- 5Copy the cleaned text from the output box
Features
- Removes exact duplicate lines instantly
- Case-sensitive and case-insensitive modes
- Optional alphabetical sorting of results
- Shows count of removed duplicates
- Preserves original line order (when sort is off)
- Handles large text files with thousands of lines
Frequently Asked Questions
Does this tool consider whitespace when finding duplicates?
By default, leading and trailing whitespace is trimmed before comparison. You can disable this in settings to preserve exact whitespace.
What is the maximum text size it can handle?
The tool can handle tens of thousands of lines without performance issues since all processing is done in the browser with JavaScript.
Can it remove near-duplicate lines (fuzzy matching)?
No, this tool uses exact matching. For fuzzy duplicate detection, you would need a more advanced tool.