What is the Text Duplicate Remover Tool?

A tool that easily detects and removes duplicate lines from text data. With data cleaning and text processing, you can eliminate duplicates from large datasets with just a few clicks.

How to Use

1. Enter or paste the text you want to process into the text input field
2. Configure options as needed
   • Case sensitive: "Test" and "test" will be treated as different lines
   • Trim whitespace from lines: Remove whitespace at the beginning and end of each line
   • Ignore empty lines: Exclude empty lines from processing
   • Sort lines: Sort the result in ascending order
3. Click the "Remove Duplicates" button
4. Results will be displayed with statistics showing how many duplicate lines were removed

Usage Techniques

📋 Combining with Sorting

The "Sort lines" option lets you organize text while removing duplicates. Useful for organizing lists or code.

🅰️ Case Sensitivity

Case sensitivity changes processing results. Turn on "Case sensitive" for code identifiers, turn it off for general text lists.

✨ Whitespace Handling

The "Trim whitespace from lines" option treats lines that look the same but have different numbers of spaces as identical. Helps with data normalization.

Important Notes

• All processing happens within your browser; entered data is never sent to any server
• Processing very large text files (millions of lines or more) depends on your browser's performance
• Processing results are not automatically saved, so use the copy button to save them as needed