Comparing Chinese text: punctuation, spaces and line breaks
Similar-looking punctuation is not necessarily the same character. The full-width comma ， and ASCII comma , are different, and a character comparison preserves that distinction for review.
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Input and output example
你好，世界。 版本：1
你好,世界。 版本:1
Start with punctuation
The first example line changes only the comma. The second replaces a full-width colon with an ASCII colon. Both lines should show differences. Full-width spaces, ordinary spaces, quotation marks and dashes can also look similar. Equal line counts do not establish equal text.
Traditional and Simplified are not normalized
資料 and 资料 are different character sequences. Changing the site's interface language translates the controls, not your input. If you need a comparison in one writing system, convert copies with an appropriate tool first and keep the originals for reference.
Watch for PDF line breaks
A visual line wrap in a PDF may become an actual newline when copied, splitting a paragraph into many lines. Check that both inputs have matching paragraph boundaries. The whitespace cleaner can collapse blank lines but does not infer which lines belong in the same sentence.
Small differences can change meaning
可以退款 and 不可以退款 differ by a single character but express opposite refund permissions. Conversely, two differently worded sentences may mean the same thing. The tool locates edits; a person still needs to review dates, figures, negation and specialist terminology.
Test a short extract first
Use a small section to check punctuation and whitespace behavior before comparing a longer document. The character counter can show visible characters and lines, but its word field does not segment Chinese words. Do not interpret that field as a Chinese word count.