How do I collapse multiple spaces into one?

Just paste your text. The tool automatically folds runs of spaces and tabs into a single space, so you can clean up the extra whitespace that copy-paste, OCR, or PDF extraction tends to leave behind.

Can it collapse full-width spaces too?

Yes. Turn on "Collapse full-width spaces" and the ideographic space ( , U+3000) is treated as part of a whitespace run, so even mixed half-width and full-width spaces fold into a single space.

Can I only trim leading or trailing spaces?

Yes. "Trim line ends" and "Trim line starts" are independent toggles. Newlines are preserved, so you can strip just the unwanted edge whitespace without breaking your paragraph structure.

Yes. Processing happens line by line and newlines are preserved. If you also want to collapse repeated blank lines, use the line break cleaner instead.

No. All processing runs entirely in your browser. The text you enter is never uploaded or stored on a server.

Yes, it is completely free. No sign-up and no installation required.

Whitespace collapser

Collapse runs of spaces and tabs into one, trim line edges, and keep your newlines. Everything runs in your browser; your data is never uploaded.

What is this whitespace collapser?

A free, browser-based tool that collapses runs of spaces and tabs into a single space. Copy-paste from PDFs, OCR output, spreadsheets, and chat logs often leaves double spaces and stray tabs scattered through your text; this tool folds them back to one space, optionally including full-width spaces (　), and can trim the whitespace at the start or end of each line. Newlines are preserved, and everything runs locally in your browser, so your text is never uploaded.

How to use it

Type or paste your text into the box on the left.
Toggle the options — collapse full-width spaces, trim line ends, trim line starts.
The cleaned text updates live on the right.
Copy the result with one click.

Common use cases

Cleaning double spaces and tabs out of text pasted from PDFs or OCR before publishing.
Normalizing spacing in copy so it renders consistently in HTML, slides, or email.
Removing trailing whitespace and stray full-width spaces from form or CSV values.

Other text tools

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