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Whitespace Remover

Clean pasted text with three explicit modes: collapse horizontal spacing, remove blank lines, or remove every whitespace character.

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Paste or type the plain text you want to clean.
  2. 2.Choose whether to collapse horizontal spacing, trim lines and remove blanks, or remove all whitespace.
  3. 3.Select Clean text, review the exact output and counts, then copy the result.

About Whitespace Remover

Whitespace Remover cleans pasted text with three deliberately different modes instead of hiding an ambiguous definition of remove. Paste text, choose the transformation that matches your downstream format, run it, inspect the output and length count, then copy the result. Everything stays in the current browser tab and no text is sent to a server.

Collapse horizontal whitespace is the safest prose-oriented mode. It converts consecutive spaces, tabs, and other horizontal whitespace on each line into one ordinary space, removes spaces directly beside a line break, normalizes CRLF line endings to LF, and trims the beginning and end of the complete result. It preserves meaningful line breaks and blank lines, so paragraphs remain separated.

Trim lines and remove blank lines is useful for lists, copied tables, logs, and pasted notes. It splits on line endings, trims both ends of every line, removes lines that become empty, and joins the remaining lines with one LF line break. Internal spacing inside each non-empty line is left unchanged. This mode is intentionally not a word-spacing normalizer.

Remove every whitespace character is the destructive compacting mode. It removes characters matched by JavaScript's Unicode-aware whitespace class, including ordinary spaces, tabs, line breaks, non-breaking spaces, and other recognized whitespace. It can join words and records together, so the label and output preview make that behavior explicit. Use it for tokens or tightly controlled machine input, not ordinary prose.

The result panel reports how many JavaScript code units were removed and the final output length. A code unit count is deterministic for the exact input but is not the same as a grapheme, visual character, byte count, or word count. Emoji and some historic scripts can use more than one UTF-16 code unit. This tool does not claim otherwise.

The transformation is deterministic: the same input and mode always produce the same string. Tests cover tabs, repeated spaces, CRLF input, blank lines, non-breaking spaces, empty cleaned output, and invalid modes. Changing the input or mode clears the old output, preventing a copied result from being mistaken for the current settings.

Clipboard copying is a convenience rather than a hidden dependency. When the browser grants clipboard permission, the tool confirms the copy. If permission is blocked, the page reports that condition and leaves the complete read-only result visible for manual selection. No transformation is repeated during copying, so the visible string and the attempted clipboard string are identical. An empty cleaned result is still displayed with an output length of zero instead of being mistaken for a failure.

No automatic spelling, punctuation, Unicode normalization, HTML parsing, Markdown parsing, smart-quote conversion, de-duplication, or case conversion occurs. The tool also does not preserve rich-text styling from a clipboard because its input is plain text. If line breaks themselves are the only issue, the related line-break remover may be a more focused option.

For source code, legal text, poetry, fixed-width data, YAML, Python, or any syntax where indentation and line endings carry meaning, preview the result carefully or use a format-aware editor. Whitespace can be data, and this page always leaves the final choice visible to the user.

Methodology & sources

Accept plain text and one of three explicit local modes. Collapse mode reduces horizontal whitespace runs, strips spaces beside line breaks, normalizes CRLF to LF, and trims the result. Clean-lines mode trims each line, removes empty lines, and rejoins with LF. Remove-all mode deletes JavaScript Unicode whitespace matches. Clear stale output on input changes and report deterministic UTF-16 code-unit differences.

Frequently asked questions

What does Collapse horizontal whitespace preserve?
It preserves line breaks while reducing horizontal runs to one space and removing spaces next to line breaks.
Does Remove every whitespace character join words?
Yes. It removes spaces and line breaks, so words and records can become adjacent.
Does the tool upload my text?
No. Transformation, preview, length counting, and clipboard copying happen locally in the browser.
Are the counts bytes or visible characters?
No. They are JavaScript UTF-16 code-unit counts for the exact input and output strings.

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