Duplicate Line Remover
Remove duplicate lines from text quickly. Keep unique lines only, case-sensitive options available. Free online deduplication tool.
Text workspace
Clean a line list while keeping the first spelling of each matching entry.
Method and limits
Trim and ignore-empty options run before counting. Case-insensitive comparison groups Apple and apple. Unique view keeps the first entry; duplicates view shows repeated entries with numeric frequencies. Sorting changes output order, not matching.
Matching is by whole line after the selected options, not fuzzy or partial matching. Considered lines = unique entries + extra occurrences. Empty input has zero lines; retained empty lines still count when Ignore empty is off.
Try this example
Apple, apple, Pear on separate lines → Apple, Pear by default: 3 considered, 2 unique, 1 removed.
Duplicate Frequency
Copied
Copy failed. Select the result and copy it manually.
Popular Tools
About Duplicate Line Remover
Clean a line list while keeping the first spelling of each matching entry. Trim and ignore-empty options run before counting. Case-insensitive comparison groups Apple and apple. Unique view keeps the first entry; duplicates view shows repeated entries with numeric frequencies. Sorting changes output order, not matching.
Apple, apple, Pear on separate lines → Apple, Pear by default: 3 considered, 2 unique, 1 removed.
These transformations run in your browser. The page still has its existing ads, consent and analytics requests; handwriting also loads Google Fonts. Copy or export useful results before closing.
Use Cases
How to use
Clean a line list while keeping the first spelling of each matching entry.
Trim and ignore-empty options run before counting. Case-insensitive comparison groups Apple and apple. Unique view keeps the first entry; duplicates view shows repeated entries with numeric frequencies. Sorting changes output order, not matching.
Paste your text with duplicate lines
Choose options (case sensitive, trim spaces)
Copy the cleaned result
Pro Tips
- Matching is by whole line after the selected options, not fuzzy or partial matching. Considered lines = unique entries + extra occurrences. Empty input has zero lines; retained empty lines still count when Ignore empty is off.
- Enable case-insensitive to treat "Apple" and "apple" as duplicates
- Trim whitespace to catch lines that differ only by spaces
- Check the count to see how many duplicates were removed
Frequently Asked Questions
Trim and ignore-empty options run before counting. Case-insensitive comparison groups Apple and apple. Unique view keeps the first entry; duplicates view shows repeated entries with numeric frequencies. Sorting changes output order, not matching. Apple, apple, Pear on separate lines → Apple, Pear by default: 3 considered, 2 unique, 1 removed.
Matching is by whole line after the selected options, not fuzzy or partial matching. Considered lines = unique entries + extra occurrences. Empty input has zero lines; retained empty lines still count when Ignore empty is off.
This tool removes exact line duplicates. Use other tools for partial matching.