Best for
Cleaning a list of repeated entries when exact line matches should count as duplicates.
Private browser tool
Remove Duplicate Lines
Remove duplicate lines from text online while keeping the first occurrence and original order. Clean lists privately with no upload or account.
✓ Local processing✓ No uploads✓ No account
TEXT→TEXT
- 1Add input
- 2Choose options
- 3Get result
Next step
Continue working with your file
Simple by design
From file to result in three steps
- 1
Paste your list with one entry per line.
- 2
Select Deduplicate lines.
- 3
Review the remaining entries and copy or download the cleaned list.
Practical guidance
When to use Deduplicate lines
What you get
One copy of each distinct line, in its original first-seen order.
Useful tip
Comparison is case-sensitive and preserves spaces. Ada and ada, or entries with trailing spaces, are different lines.
Exact matching keeps distinct entries
This tool does not trim spaces or normalize capitalization. That is useful when those differences carry meaning. If entries that look identical remain, inspect leading and trailing whitespace before removing them manually.
Input
Ada
Lin
Ada
ada
Output
Ada
Lin
adaGood to know
Frequently asked questions
Does removing duplicates sort the list?+
No. The first occurrence of each line stays in its original order. Use Sort Lines separately if you want alphabetical order.
Are repeated empty lines removed?+
Yes. Empty lines are treated as identical entries, so only the first remains.
Does my file leave my device?+
No. This tool processes your file inside your browser and does not send its contents, name or metadata to Filemivo.
Is Deduplicate lines free?+
Yes. It is free to use and has no artificial file-size limit. Your browser and device memory determine the practical limit.