Whitespace Cleaner — Clean any text instantly.

A non-breaking space (U+00A0) is a space character that looks identical to a regular space but is a different Unicode character. It prevents line breaks between the words it separates. Problems arise when it is stored in databases (queries that search for regular spaces return no results), processed by code (string comparisons fail), or indexed by search engines (terms appear separated by an unrecognised character). Word and PDF software insert them frequently. The "Replace non-breaking spaces" option replaces every instance with a standard space.

No. The tool only removes or replaces whitespace characters: spaces, blank lines, tabs, and non-breaking spaces. It never modifies letters, punctuation, numbers, or any visible characters. The stats bar shows exactly how many characters were removed so you can verify nothing unintended was affected.

Word uses paragraph spacing (set in the Paragraph formatting panel) to create visual space between paragraphs. When you copy from Word to a plain-text field, that spacing is represented as multiple blank lines. The "Collapse blank lines" option converts runs of blank lines to a single blank line, which is the standard paragraph separator in plain text.

Only if you intend to reformat the text afterwards. "Remove blank lines" eliminates every paragraph break, turning your copy into one continuous block. This is useful for CSV data, code, or any text where you will add formatting back programmatically. For text you are going to paste into a CMS or document, "Collapse blank lines" is the safer option — it preserves paragraph structure while removing excess spacing.

There is no hard limit. The cleaning algorithm uses simple string operations that run in linear time. In practice, text blocks of 500,000 characters process in under a second in a modern browser. If you are working with extremely large files (multiple megabytes), a command-line tool will be faster — but for the text sizes most people paste into a browser, this tool handles it without issue.