Remove Duplicate / Empty Lines
Clean up lists, logs, and CSV-like text by removing duplicate lines and blank lines in one click. See before/after line counts and control how whitespace and case are handled.
All computations run locally in your browser, no data uploaded to server.
How To Use
- Paste your text with one item per line.
- Choose an action: Remove duplicates, Remove empty lines, or Trim whitespace.
- Tick the options for case- and whitespace-sensitive comparisons.
- Read the output and its line-count summary.
Usage Example
Input:
apple banana apple cherry
After Remove duplicate lines and Remove empty lines:
apple banana cherry
Output line count drops from 5 to 3.
Frequently Asked Questions
Is the order preserved?
Yes. The first occurrence of each duplicate is kept, so the original order is maintained.
Is my text uploaded?
No. All cleaning happens locally in your browser with native string operations.
What does "ignore case" do?
When enabled, lines like Apple and apple are
treated as duplicates and only the first is kept.