Duplicate Line Remover

Remove duplicate lines from text while preserving order and providing detailed statistics about removed duplicates

About Duplicate Line Remover

Overview

This tool helps you clean up text by finding and removing repeated lines. It keeps the first instance of each line and deletes any that follow, making your text neat while keeping its original structure. The tool also shows you how many duplicates it removed. It is great for cleaning data, checking logs, and any other job where you need to get rid of extra lines.

Features

  • Real-time line cleaning with live mode.
  • Keeps the original line order.
  • Option for case-sensitive or case-insensitive matching.
  • Can trim whitespace for better comparisons.
  • Shows detailed statistics on removed lines and space saved.
  • Tells you which lines were repeated most often.
  • Calculates the percentage of repeated content.
  • Works with files up to 100MB.
  • Lets you copy the result to your clipboard.
  • Swap button for easy re-processing.
  • Supports over 40 character encodings.
  • All work is done in your browser for privacy.
  • Comes with dark mode and a responsive design.

How to Use

  1. Put your text in the input box.
  2. Pick a character set if you need to, but UTF-8 is usually the best choice.
  3. Set your options, like keeping the order, matching case, or trimming whitespace.
  4. Use live mode for instant results as you type.
  5. Click "REMOVE DUPLICATES" to clean your text.
  6. See the finished text in the output box.
  7. Look at the statistics to see how many duplicates were taken out and how much space was saved.
  8. Use the swap button to move the result to the input for more changes.
  9. Copy the text or upload files up to 100MB.

FAQ

Will this tool change the order of my lines?

No, it will not. The tool is made to keep your lines in their original order. It holds on to the first time a line shows up and gets rid of any repeats that come after it.

What about empty lines?

Empty lines are treated like any other line. If you have several empty lines, the tool will keep the first one and remove the others. If you use the "Trim Whitespace" option, all empty lines will be treated as one.

How does the case sensitive option work?

When case sensitivity is on, "Hello" and "hello" are seen as different. If it is off, they are treated as the same, and one will be removed as a duplicate.