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Automatically insert spaces between Chinese and English characters to optimize mixed text formatting.
Enter text to add spaces between Chinese and English
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
This formatter adds a regular half-width space where a Han character touches an English letter, digit, or one of a small set of symbols. For example, Python编程 becomes Python 编程, and 版本3 becomes 版本 3. It is a character-boundary cleanup rule for mixed Chinese and Latin text, not a translation or a full typography checker.
The rule recognizes Latin A–Z/a–z, digits 0–9, and @, #, &, hyphen, and underscore at a Han boundary. It does not parse sentence meaning or decide whether a product name should be separated. It also collapses runs of two or more whitespace characters into one regular space, so spacing that was intentionally repeated can change.
Ordinary Chinese-English notes, product descriptions, and short documentation are common candidates for cleanup. The tool does not generally insert spaces around punctuation, rewrite punctuation width, or understand Markdown and HTML structure. Full-width Latin letters, emoji, and other writing systems are outside the stated boundary rule. Treat results around punctuation and markup as text that needs review.
Because this is a literal character rule, output can differ from a publisher's style guide. Some contexts deliberately keep Latin terms next to Chinese, while code indentation, aligned columns, and repeated spaces may carry meaning. Make the target document's conventions the deciding factor.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Paste or type the mixed text into the input area. The result updates as the text changes.
Review the output beside the original. Check punctuation, names, links, markup, line breaks, and any run of spaces that was meant to remain.
Copy the result only after confirming that the inserted and collapsed spaces fit the destination document.
Input: 学习Python编程
Output: 学习 Python 编程
Input: 版本3已发布
Output: 版本 3 已发布
Input: AI 技术
Output: AI 技术
Use cases
See how the tool fits into real work and everyday tasks.
An editor can normalize boundaries in a short draft containing Chinese prose and Latin product names, then apply the publication's preferred style during proofreading.
A team can use the result as a first-pass suggestion for mixed-language help text, with a reviewer checking terms and punctuation against house style.
For source code, commands, tables, or preformatted blocks, work on a copy and compare before replacing the original because the formatter can alter spaces.
Q&A
Find concise answers to common questions and confusing cases.
Not as a general rule. The insertion pattern targets Han characters next to supported Latin letters, digits, and symbols; it is not a punctuation-layout engine.
No. A sequence of two or more whitespace characters is reduced to one regular space, so intentional alignment or spacing can be lost.
You can enter the text, but the formatter does not parse those syntaxes. It may change spaces inside meaningful content, so use a copy and inspect the difference before reusing the output.
Notes
Review scope, result limitations, and important precautions before use.
The output reflects mechanical character rules, not a judgment about grammar, terminology, or compliance with a specific Chinese or English style guide. Check links, names, punctuation-heavy passages, markup, and any text where exact spacing matters. Keep an original copy when the spaces are part of code, alignment, or a fixed-width layout.
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