Remove Duplicate Lines
Remove duplicate lines from text instantly
Remove Duplicate Lines scans your text line by line and keeps only the first occurrence of each exact line, dropping every repeat while preserving the original order — and tells you exactly how many lines were removed.
How to use Remove Duplicate Lines
- 1
Paste your list or text.
- 2
Click "Remove Duplicates" to process it.
- 3
See how many duplicate lines were removed.
- 4
Copy the deduplicated result.
Everything you need to know about removing duplicate lines
What does this do?
Scans a block of text line by line and removes any exact duplicates, keeping only the first occurrence of each — a quick fix for lists that have accumulated repeats from being combined or edited over time.
When you actually need this
- Cleaning a combined list — merging two spreadsheets' worth of email addresses or names that overlap.
- Deduplicating a list of URLs or keywords before further processing.
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Frequently Asked Questions
Does this consider lines with different casing as duplicates?
No — matching is exact, so "Apple" and "apple" are treated as different lines. Normalize casing first if you want those treated as duplicates too.
Does the order of my list change?
No — the first occurrence of each line stays in its original position; only later repeats are removed.
What about lines with extra trailing whitespace?
Matching is exact character-for-character, so a line with trailing whitespace is treated as different from the same line without it — clean up whitespace first if that's not what you want.
Does this tool send my text to a server?
Yes — it's sent to our servers to process and the result is returned to you; nothing is stored.
Is this tool free to use?
Yes — completely free, with no signup and no usage limits for casual use.