Duplicate Remover

What is a Duplicate Remover?

The Duplicate Remover is a text processing utility designed to clean lists, logs, and CSV inputs by removing repeating lines. It maintains the integrity of your data by keeping only unique lines while offering customizable sorting and filtering options.

Features

• Custom Filters: Trim leading/trailing whitespace, ignore empty lines, and toggle case-sensitive comparisons.
• Sorting Options: Keep the original order of elements or sort the output alphabetically (ascending or descending).
• Duplicate Log: Review exactly which lines were detected as duplicates and removed from your original text.
• Real-Time Counters: Displays original line count, unique line count, and percent reduction metrics.
• Privacy First: All calculations run locally in your web browser. No data is sent to external servers.

How to Clean Your List

1. Paste your list (one item per line) into the Input Editor.
2. Customize the processing options:
   • Trim Lines: Strip spaces at the start and end of lines.
   • Ignore Empty Lines: Automatically discard blank lines.
   • Case Sensitive: Keep lines with different capitalization distinct.
3. Select a sorting preference under Sort Output.
4. The cleaned list is rendered immediately in the Output Editor.
5. View the Removed Duplicates tab to double-check deleted lines.
6. Copy or download the finalized list.

Example Transformation

Input List:

apple
Banana
apple
orange
banana
  apple

Cleaned Output (Trimmed, Case-Insensitive, Original Order):

apple
Banana
orange