What Is a Duplicate Line Remover?
A duplicate line remover takes a list of items, one per line, and filters out any lines that appear more than once, leaving you with only unique entries. It saves the tedious process of manually scanning a long list for repeated items.
When Would You Use This?
Any time you have a list that may contain repeats and you need to clean it up. Common uses include deduplicating email lists, cleaning up keyword lists for SEO, removing repeated entries from exported data, filtering duplicate URLs from a crawl report, or tidying up any list you have assembled from multiple sources.
What Do the Options Do?
Case-insensitive treats lines that differ only by capitalisation as duplicates. With this on, "Apple" and "apple" count as the same line and only one is kept. Trim whitespace removes leading and trailing spaces from each line before comparing, so " apple " and "apple" are treated as identical. Sort A–Z sorts the unique results alphabetically after deduplication. Remove empty lines strips out any blank lines from the output.
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