Text Duplicate Remover

Detect and remove duplicate lines from text.

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Total 0 lines, 0 unique lines (0 duplicates removed)

What is the Text Duplicate Remover Tool?

The Text Duplicate Remover Tool is an online utility that easily detects and removes duplicate lines from text data. Removing duplicate lines is a common task in data cleaning and text processing. With this tool, you can eliminate duplicates from large datasets with just a few clicks.

How to Use the Text Duplicate Remover Tool

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

Advanced Usage

The Text Duplicate Remover Tool offers several advanced features:

  1. Combining with sorting: Using the "Sort lines" option allows you to organize your text while removing duplicates. This is particularly useful for organizing lists or code.
  2. Case sensitivity handling: Whether you need case sensitivity or not can significantly change the processing results. For example, turn on "Case sensitive" when processing a list of identifiers in code, and turn it off for general text lists.
  3. Whitespace handling: The "Trim whitespace from lines" option allows you to treat lines that look the same but have different numbers of spaces as identical. This helps with data normalization.

Important Notes

  • This tool operates entirely within your browser, and the data you enter is never sent to any server
  • Processing very large text files (millions of lines or more) depends on your browser's performance
  • The processing results are not automatically saved, so please use the copy button to save them as needed