Text Whitespace Cleaner

Remove extra whitespace, tabs, trailing spaces, blank lines, and non-breaking spaces from text.

Tested tool guide Tested browser tools Checked August 16, 2026

What Text Whitespace Cleaner does, with a checked example

This tool takes a block of pasted or typed text and normalizes its whitespace: runs of spaces and tabs collapse to a single space, non-breaking spaces (U+00A0) convert to regular spaces before collapsing, trailing spaces at the end of each line are stripped, and lines containing only whitespace are removed outright. The output is a single pass over the text with no undo history, so the most common surprise is that blank lines used as paragraph breaks disappear completely rather than being reduced to one - if you need paragraph spacing preserved, that structure is lost.

Worked example

A concrete input and expected output from the current implementation.

Input

Hello world,   this  is	a   test.

Expected output

Hello world, this is a test.

Non-breaking spaces convert to regular spaces, every run of spaces or tabs collapses to one space, and the trailing spaces at the end are stripped, leaving single spaces between each word and no space after the final period.

How the result is produced

Whitespace collapsing

Every run of one or more spaces or tabs is replaced with a single space. Non-breaking spaces (U+00A0), which look identical to a regular space but are copied in from formatted web pages or Word documents, are converted to ordinary spaces first, so a run mixing regular and non-breaking spaces still collapses to one character instead of being left untouched.

Line-level trimming

After whitespace is collapsed, each line is trimmed of trailing spaces so no invisible characters remain at line ends. Lines that are empty or contain only whitespace are deleted entirely rather than merged, which also removes blank-line paragraph separators - the result is one continuous block without the visual gaps the original text may have used for structure.

Good uses

Cleaning text copied from a PDF or Word document before pasting it into a code editor, config file, or form field that chokes on tabs and stray spaces.
Removing trailing whitespace so a text diff or version-control comparison doesn't flag lines as changed when only invisible characters differ.
Stripping non-breaking spaces picked up from a web page (common after copying from Google Docs or a CMS) that cause unexpected line-wrap behavior or break exact-match search.

Limits and checks

Blank lines are deleted outright, not collapsed to one - paragraph breaks in prose or spacing between code blocks will disappear, not just shrink.
Collapsing every run of spaces to one also flattens intentional indentation, so running this on source code, YAML, or Markdown with meaningful leading whitespace will break it.
The description names non-breaking spaces specifically; other invisible Unicode spacing characters (thin space, em space, zero-width space) may pass through unchanged - check output on a short sample if your source is a website or PDF that could contain them.

Common questions

Does it preserve blank lines between paragraphs?

No. Lines that are empty or contain only whitespace are removed completely, not reduced to a single blank line, so multi-paragraph text collapses into one continuous block with no gaps. If you need paragraph spacing preserved, add the line breaks back manually after running the cleaner.

Is it safe to run on source code?

Not if the code relies on leading-space or tab indentation - collapsing every whitespace run to a single space flattens that indentation and will likely break the code's structure or syntax. It's built for cleaning prose and pasted text, not for preserving code formatting or meaningful layout.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.