✍️ Text

Remove Duplicate Lines

Delete repeated lines from a list while keeping the original order.

Results

Result
Lines removed
2

📊 Remove Duplicate Lines chart

Character composition of the result: letters, digits, spaces, punctuation and other symbols.

What is the Remove Duplicate Lines?

Delete repeated lines from a list while keeping the original order. Clean up, transform and analyze text in one click. All text tools run entirely in your browser, so your writing never leaves your device.

Remove Duplicate Lines – free online text tool illustration
Remove Duplicate Lines — free, exact and private.

How to use the Remove Duplicate Lines

  1. Paste or type your your text into the box (a sample is pre-filled so you can see how it works).
  2. Tick the options you need: ignore case & surrounding spaces.
  3. Results update automatically as you type; you can also press Calculate.
  4. Read the output: result, lines removed.
  5. Use the 📊 chart to see the result visually, then copy or share it.

Worked example

With ignore case & surrounding spaces = no, the Remove Duplicate Lines returns lines removed: 2.

Tips for better results

  • Use Ctrl/Cmd + A then paste to replace the sample text quickly.
  • Chain tools: remove extra spaces, then change case, then count words.
  • Use the Download button to save long results as a .txt file.

Frequently asked questions

What does the Remove Duplicate Lines do?

Delete repeated lines from a list while keeping the original order.

Can you show an example?

With ignore case & surrounding spaces = no, the Remove Duplicate Lines returns lines removed: 2.

Is the Remove Duplicate Lines accurate?

Yes. It uses standard formulas and exact constants, and the results are verified by our automated test suite. Values are displayed to up to 12 significant digits.

Is this tool free and private?

Yes — the Remove Duplicate Lines is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.

Related tools

Sort Lines AlphabeticallySort lines A→Z, Z→A, by length or numerically.Shuffle Lines (List Randomizer)Randomly shuffle the lines of a list — great for draws and picking order.Remove Empty LinesDelete blank and whitespace-only lines from text.Remove Extra SpacesCollapse multiple spaces and trim each line.Remove Line BreaksJoin lines into one paragraph by removing line breaks.Add Line NumbersNumber each line of text.Add Prefix and Suffix to LinesAdd text before and/or after every line.Find and Replace TextFind and replace words or phrases in text, with optional case-insensitive and regex…

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