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Duplicate Line Remover

Remove repeated lines from a list without losing the order.

Text Tools Reviews Free · no sign-up
0Lines in
0Unique lines
0Duplicates
0Lines out

Quick Tool Overview

The Duplicate Line Remover takes a list and gives it back with the repeats gone, in the original order. Matching is configurable, because in practice a duplicate is rarely a byte-for-byte match — capitalisation and stray spaces usually differ.

What it does
Removes repeated lines from a list, or extracts just the repeats
You give it
A list with one item per line
You get back
A de-duplicated list, optionally sorted or counted
Best for
Email lists, URL exports, keyword lists, product codes and logs
Text Tools Free, unlimited use No sign-up Runs in your browser

About the Duplicate Line Remover

Paste a list and get it back with the repeats gone. It works on anything you keep one item per line: email addresses, URLs, keyword exports, product codes, log lines.

Matching is configurable, because in practice a duplicate is rarely a byte-for-byte match. Ignore capitalisation so two spellings of the same address count as one, ignore the stray spaces a copy and paste leaves at the ends, and drop blank lines. You can keep the first copy of each line or the last, sort the result, or add the number of times each line appeared.

The tool also runs in reverse. Ask for only the lines that repeat and you get the duplicates themselves rather than the cleaned list, which is how you audit an export instead of just fixing it.

Key features of the Duplicate Line Remover

Order is preserved

The list comes back in the order you pasted it unless you ask for it sorted.

Loose matching

Ignore capitalisation and trailing spaces so two spellings of the same address are treated as one duplicate.

Keep first or keep last

Choose which copy of each repeated line survives, which matters when later rows are the fresher ones.

Occurrence counts

Add the number of times each line appeared to turn a clean-up into a quick frequency report.

Reverse mode

Ask for only the lines that repeat and you get the duplicates themselves, which is how you audit an export rather than just fix it.

How to use the Duplicate Line Remover

  1. 1

    Paste your list

    One item per line. Order is preserved unless you ask for something else.

  2. 2

    Decide what comes out

    Keep every line once, or flip the tool around to list only the repeats or only the one-offs.

  3. 3

    Loosen the matching

    Ignore capitalisation and surrounding spaces so near-identical lines are recognised as the same.

  4. 4

    Copy or download

    Take the result to your clipboard or save it as a plain text file.

Frequently asked questions

Yes. Lines come out in the order they first appeared, and sorting is an option rather than the default. Choose to keep the last copy instead and the order follows the final appearance of each line.

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