Text Tools
Remove Duplicate Lines
Remove repeated lines while preserving order.
Total lines
Unique lines
Removed duplicates
Why use this tool
03Clean repeated lines in pasted text and keep the first occurrence.
Remove Duplicate Lines is useful when cleaning logs, keyword sets, and lists.
Everything runs in the browser.
How to use
02Quick checks before you copy
03Confirm the input is the format you intended.
Scan the result before using it in a document, URL, config, or message.
Copy only the output you need.
FAQ
03
Does it keep order?
Yes. The first appearance of each line is preserved.
Is the comparison case-sensitive?
Yes. Lines that differ only in case are treated as separate entries.
What happens to blank lines?
Blank lines are treated as unique entries and kept once. Use Trim Whitespace first if you want to remove them.
Related tools
03Sort Lines→
Sort text lines alphabetically with common options.
Trim Whitespace→
Trim extra whitespace from text lines.
Word Counter→
Count words, characters, and lines in pasted text.