Duplicate & Text Cleaner
Remove duplicate lines, repeated words, blank lines, extra spaces and invisible characters. Preview every cleanup before copying.
Private by design
Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.
How to use Duplicate & Text Cleaner
- Paste a list or open a UTF-8 text file up to 1 MB.
- Choose a preset or specific cleanup options; inspect the live output and removal counts.
- Copy the result or download TXT. Your input remains available unchanged.
What are the limits of Duplicate & Text Cleaner?
Plain text only; not CSV parsing, HTML sanitization or a grammar corrector. Word matching uses whitespace-separated tokens, including punctuation. Case matching is Unicode lowercase rather than locale-specific linguistic equivalence. Line endings normalize to LF. Destructive options such as all-whitespace removal, punctuation, emoji and invisible-character removal are opt-in and may change meaning. Order is preserved; first/last retention applies to duplicate lines. Processing is bounded to 1 MB, 50,000 lines and a ten-second worker deadline.