Collapse Whitespace Tool

About this calculator

This tool applies a simple but common text-normalization pattern: it matches every run of one or more whitespace characters — spaces, tabs, and line breaks alike, typically via a regular expression like /\s+/ — and replaces each run with a single space, then trims any leading or trailing space from the result.

Text pasted from PDFs, emails, or scraped web pages often carries stray tabs, double spaces, and inconsistent line breaks that break string comparisons, CSV parsing, or search matching. Developers cleaning input data, data-entry and QA teams, and copywriters preparing text for publishing use whitespace collapsing to normalize messy text into a single clean line before it's stored, compared, or displayed.