DiffCheck

Whitespace Cleaner Online

Trim lines, collapse extra spaces, remove blank lines, and normalize line endings.

INPUT
OUTPUT

What Is a Whitespace Cleaner?

A whitespace cleaner normalizes unwanted whitespace in text. This tool lets you trim leading and trailing spaces from each line, collapse multiple consecutive spaces into one, remove or collapse blank lines, strip whitespace from the start and end of the entire document, and normalize line endings from Windows (CRLF) or old Mac (CR) format to Unix (LF). It is useful for cleaning up pasted content, preparing text for processing, or fixing formatting issues before committing code.

How to Use Whitespace Cleaner

  1. Paste your text into the Input area.
  2. Enable the cleaning options you need using the checkboxes.
  3. The cleaned result appears instantly in the Output area.
  4. The stats bar shows how many characters were removed.
  5. Click Copy to copy the result to your clipboard.

Features

  • Trim lines — remove leading and trailing whitespace from each line
  • Collapse spaces — replace multiple consecutive spaces/tabs with a single space
  • Remove empty lines — delete all blank lines
  • Collapse empty lines — reduce multiple consecutive blank lines to one
  • Trim document — strip whitespace from the very start and end of the text
  • Normalize line endings — convert CRLF and CR to LF
  • Character savings counter — shows how many characters were removed
  • Privacy-first — all processing is local, no server involved

FAQ

What does a whitespace cleaner do?

A whitespace cleaner removes or normalizes unwanted whitespace from text: leading/trailing spaces on each line, multiple consecutive spaces, extra blank lines, and inconsistent line endings (CRLF vs LF).

What is the difference between "Remove Empty Lines" and "Collapse Empty Lines"?

"Remove Empty Lines" deletes all blank lines entirely. "Collapse Empty Lines" keeps at most one consecutive blank line — useful for preserving paragraph breaks while removing excessive spacing.

What does "Normalize Line Endings" do?

It converts Windows-style line endings (CRLF, \r\n) and old Mac-style endings (CR, \r) to Unix-style (LF, \n). This prevents invisible characters from causing issues in code editors or version control.

Is my text sent to a server?

No. All processing happens entirely in your browser. No data is sent to any server.