Remove Duplicate Lines

Remove duplicate lines from text with Mass Tools' free tool. Supports TXT, CSV, and XLSX uploads.

Drag and drop TXT, CSV, or XLSX file (optional)

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About the Remove Duplicate Lines Tool

The Remove Duplicate Lines tool by Mass Tools eliminates duplicate lines from text, with options to trim spaces and ignore case. Paste text or upload TXT, CSV, or XLSX files for instant deduplication.

Why Use This Tool?

  • Data Cleaning: Remove repeated lines for cleaner datasets or lists.
  • Data Analysis: Prepare unique data for reporting or processing.
  • Content Optimization: Ensure unique lines for documents or scripts.
  • Batch Processing: Handle large text datasets efficiently.

How to Use

  • Paste text (e.g., "Line 1\nLine 1\nLine 2") or upload a TXT, CSV, or XLSX file.
  • Check "Trim Output" to remove leading and trailing spaces.
  • Check "Ignore Case" to treat lines like "Line" and "line" as duplicates.
  • Click "Remove Duplicate Lines" to view results.
  • Use "Undo" or "Redo" to revert or restore changes.
  • Copy or download the deduplicated text.
  • Reset to clear inputs and results.

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