Duplicate Line Remover

The Duplicate Line Remover deduplicates any line-based list. It keeps the first occurrence of each line, drops every later repeat, and preserves the original order — so a curated list stays in the sequence you built it in, just without the repeats.

Three counters summarize the result: total lines in, unique lines out, and how many duplicates were removed. That removed-count is often the interesting number — it tells you how dirty your source data actually was.

Matching is exact: two lines count as duplicates only if they are character-for-character identical, including capitalization and any trailing spaces. Deduplication runs entirely in your browser.

Merged lists always contain repeats. Combine email signup exports from two campaigns and the same address will appear in both; mail one message per line and duplicated recipients get duplicate emails. Deduplicating the merged list first is the fix, and it takes one paste and one click here.

Developers and SEOs hit the same problem with keyword lists, URL crawls, log entries, and test data. Excel can dedupe too, but for a plain list it's faster to paste text here than to build a spreadsheet around it.

Because the tool preserves order, it's also safe for prioritized lists — your top-ranked item stays on top, which 'sort then dedupe' approaches would destroy.

1. Paste your list into the input box, one item per line.

2. Click 'Compare and Remove Duplicates'.

3. Check the Total / Unique / Removed counters to see what happened.

4. Copy the deduplicated list from the output box.

Input:

apple banana apple cherry banana

Output:

apple banana cherry

Counters: Total 5 · Unique 3 · Removed 2