Space remover

This route applies a single transformation: every whitespace character in the input is deleted, and the remaining characters are returned in their original order as one continuous string. There is no mode selection, no per-line handling and no preservation of structure.

Stating that precisely matters, because the competing tools for this term expose between two and seven modes and the default behaviour differs between them. Here the behaviour is fixed, so the output is predictable from the input alone.

Detection and transformation both run client-side, in JavaScript. There is no upload, no server round trip and therefore no run limit, since nothing here has a cost to meter.

Whitespace is a character class, not a single character, and the class is wider than most people assume. Everything below is removed by this route, verified against the engine rather than assumed.

U+0020 space, U+0009 tab

The two typed cases, including arbitrary runs of them.

U+000A and U+000D

Line feed and carriage return, which is why the output is necessarily a single line.

U+00A0 no-break space

Visually identical to an ordinary space, distinct in every byte-level comparison. The most common invisible failure in pasted values.

U+202F and U+200A

Narrow no-break space and hair space, both typical of justified or typeset sources.

U+3000 ideographic space

The full-width space in CJK text, which ordinary space handling routinely misses.

U+1680, U+2028, U+FEFF

Ogham space mark, line separator, and the byte-order mark, all of which fall inside the whitespace class and are removed.

The operation is lossy in one direction only, so sequencing matters.

Step 1

Retain the source. The output contains no record of where the removed characters were, so the transformation cannot be inverted.

Step 2

Paste and run. The transformation is applied to the entire input in one pass, locally.

Step 3

Verify the result against what you intended. A single-line output from multi-line input is correct behaviour here, not a fault.

The distinction that decides whether this route solves your problem: a character can render nothing and still not be whitespace. U+200B, the zero-width space, is the canonical example. It occupies a position, produces no mark, and is outside the whitespace class, so it passes through this tool unchanged. The zero-width joiner and the soft hyphen behave identically.

So a value that still fails an equality test after every space has been stripped is almost certainly carrying one of those, not a space. That is a different character class and a different route, the zero-width space remover, and conflating the two is the most common diagnostic error in this area.

Every failure here has the same shape: two strings that are visually identical compare as unequal, and the interface gives no indication why. A trailing U+0020 on a pasted reference, a U+00A0 inside an account number, a line break that survived a copy out of a terminal. Each one changes the byte sequence without changing the rendering.

The systems most affected are the ones performing exact comparison: lookups, joins, deduplication, authentication and imports. Normalising whitespace before comparison is standard defensive practice for precisely this reason, and doing it by hand is what this route is for.

It does not collapse, trim, normalise or selectively remove. Those are distinct operations with distinct outputs, and they are separate routes here: the whitespace minifier collapses runs to a single space, the line break remover rejoins wrapped lines, the accent remover handles diacritics.

It also accepts no file upload, offers no batch interface and exposes no API. A competing tool advertising a developer API is offering something this route does not have, and the honest answer is no rather than a vague one.

Prose. The transformation is structure-destroying by definition, so applying it to a paragraph yields a single unreadable token. That is the specified behaviour rather than a defect, but it is rarely the intent behind the search.

Source code. Whitespace is semantically load-bearing in two separate ways: it separates tokens in essentially every language, and it defines block structure in indentation-sensitive ones. Removing all of it is not minification, which preserves token boundaries, and the result will not parse.

The valid applications share one property: the input is a value, not a document.

Identifier repair

Restoring a key, hash or reference that acquired whitespace in transit or wrapped across lines.

Comparison preparation

Normalising two candidate strings before testing equality, to separate a data problem from a whitespace artefact.

Export cleanup

Removing padding introduced by a fixed-width or formatted export rather than present in the underlying data.