Whitespace & Duplicate Cleaner

Clean extra whitespace, blank lines and duplicate lines from your text in one click, based on the rules you choose.

Runs 100% in your browser — your text is never sent to a server.
Cleaning options

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Frequently Asked Questions

Your text is processed line by line according to the checkboxes you select: whitespace is trimmed, extra spaces are collapsed, and blank/duplicate lines are removed. Everything runs entirely in your browser.

Only the first occurrence of an identical line is kept; later duplicates are removed. The comparison is case-sensitive.

Converts all Windows (\r\n) and old Mac (\r) line endings to a single Unix-style line ending (\n) — useful when merging text from different operating systems.

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