Paste text with one line per record
This tool compares full lines only. It does not remove repeated words inside a line.
Cleaned output
Stats update after every run. Output always contains selected full lines, never deduplicated words inside a line.
No account. No upload. Your text stays in this browser session for the core tool output.
Related tools
Useful browser-based text cleanup helpers:
Text Case Converter · Word Counter Plus · JSON Formatter · All Text Tools
What this duplicate line remover does
The tool splits pasted text by line breaks, compares full lines, and returns only the lines that match your selected mode. It never removes repeated words inside a single line.
How to use it
Paste text with one record per line, choose how duplicates should be handled, adjust case or whitespace options if needed, and run the cleanup. You can then copy, download or swap the result back into the input.
Common use cases
- Remove duplicate email lists, tags, keywords or copied rows before saving them.
- Find which lines repeat in logs, exports or manual notes.
- Keep only truly unique lines when cleaning notes or browser-generated lists.
Exact vs case-insensitive duplicates
With case-sensitive comparison, Apple and apple are treated as different full lines. When Ignore case is enabled, they share one comparison key but the output still keeps the selected original line according to your mode.
Whitespace and empty-line handling
Trim comparison can make "apple" and " apple " match without changing the original line by default. The separate empty-line setting lets you keep all blank rows, keep one blank row, or remove blank rows entirely.
Example input and output
For the lines apple, banana, apple, orange, banana, the Keep first mode returns apple, banana, orange. Show only duplicate lines returns apple and banana once each, because the tool reports repeated line keys rather than repeated words.
Limitations
This is a line deduplicator, not a sentence rewrite or text-merging tool. It does not understand meaning, spelling variants or hidden business rules beyond the exact line-comparison options shown on the page.
Privacy note
Text is processed locally in your browser for the core tool output. No account is required and no file upload is needed, but you should still avoid pasting sensitive data unless you are comfortable handling it in this browser session.
Practical guidance
Keep last is useful when you want the most recent version of repeated rows while preserving the order of those final occurrences as they appear in the source text. Show only unique lines is useful when repeated rows should disappear completely and you only want one-off values.
If your source includes leading or trailing spaces from copy and paste, enable Trim whitespace for comparison first and only enable Trim output if you also want the saved result to lose those extra spaces. That keeps the comparison flexible while leaving you in control of the final output.
Last updated: June 2026.
FAQ
Does this tool remove duplicate words inside a line?
No. The tool compares complete lines only. If one line contains "apple apple banana", that entire line stays intact unless another full line matches it under the selected comparison rules.
What does show only duplicate lines mean?
It means the output includes one representative copy of each line key that appears more than once in the input. It is useful when you want to inspect repeated rows without keeping every repeated occurrence.
Can I keep the last matching line instead of the first one?
Yes. Keep last selects the final full line for each comparison key and then keeps the order of those last selected lines as they appeared in the original pasted text.
Is my text uploaded or saved?
The core line-processing step runs in your browser and does not require an account. Avoid pasting confidential text if your own privacy, client or workplace policy does not allow browser-based processing.