Text Whitespace

Quick answer: Clean invisible characters: trailing spaces, doubled blank lines, tabs, full-width spaces. Open 文本空白清理 — everything runs locally in your browser, and files never leave your device.

Steps

1. Paste text into the Whitespace Cleaner.
2. Toggle cleanup items: trim line ends, collapse blank lines, tabs → spaces, full-width → half-width.
3. Copy the cleaned text.

Important notes

• Text copied from Word/PDF often carries non-breaking spaces (U+00A0) that break code searches — clean before diffing or grepping.
• Do not globally convert tabs in indentation-sensitive languages (Python/YAML) — it changes meaning.

Common questions

Are full-width spaces handled? Optional conversion to half-width.

Visualize hidden characters? A reveal mode marks their positions.

When to use this

Run whitespace cleanup before any diff or word count — invisible characters silently change both.

Pro tips

The characters that cause real damage are the invisible ones: non-breaking spaces (U+00A0) from web copies that break string comparisons, zero-width spaces from formatted documents that make exact-match lookups fail mysteriously, and full-width spaces from CJK input that sort differently from half-width. Run the cleaner before any diff, sort, or paste-into-code operation. One caution stands: in Python or YAML, converting tabs to spaces changes program semantics — scope that cleanup to prose files only.

Why does my code work but my string comparison fail? Almost certainly a non-breaking or zero-width character smuggled in from a copy-paste — clean the whitespace and it matches.