Remove Duplicate Lines
Clean messy lists by removing duplicate lines in one click.
Pasted a 2,000-row email list with repeats? This keeps the first occurrence of each line and drops the rest — optionally ignoring case and sorting the result. A 30-second job that beats an hour in Excel for quick cleaning.
How to use the remove duplicate lines
- Paste your list.
- Choose case sensitivity and sorting.
- Copy the cleaned list with a duplicate count.
Remove Duplicate Lines — FAQs
Does it keep the first or last occurrence?
First — order is preserved, so your original sequence stays intact minus the repeats.
Case-sensitive or not?
Your choice. ‘Apple’ vs ‘apple’ count as different lines in case-sensitive mode, same otherwise.
Can it handle blank lines?
Yes — there’s an option to strip empty lines too, which usually accompany pasted data.
What’s the line limit?
Handles tens of thousands of lines comfortably, all processed locally in your browser.
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