Article draft
Input
今日は、テストです. 明日は，公開します。
Output
今日は、テストです。 明日は、公開します。
Japanese Punctuation Converter
Clean mixed punctuation in Japanese drafts so articles, emails, and documentation feel consistent before sharing.
Text tools
What it helps with
- Normalize punctuation before publishing on note, Zenn, Qiita, or a company blog
- Clean mixed comma and period styles in copied drafts
- Prepare consistent email or document text before sharing
How to use
- Paste text with mixed punctuation.
- Choose the punctuation style and optional cleanup rules.
- Normalize the text and review the changed count.
- Copy the result when it matches your style.
Examples
Technical note
Input
JSON, SQL，Markdown を確認する.
Output
JSON、SQL、Markdown を確認する。
Good to know
- This is punctuation normalization, not grammar checking.
- Numeric commas and decimal points are preserved where possible, but final review is still recommended.
- Some editorial style choices depend on the publication or team.
FAQ
- Does this check grammar?
- No. It only normalizes punctuation and symbol style.
- Will numeric commas and decimal points be changed?
- The tool tries to preserve commas and periods between digits, but final review is recommended.
- Is pasted draft text saved?
- No. KoguNavi does not save pasted drafts.
Related tools
Nearby utilities from the KoguNavi toolbox.
Text tools
Character / Word Counter
Count characters, words, lines, bytes, and Japanese writing estimates.
Open tool →
Text tools
Environment-dependent / Machine-dependent Character Checker
Check Japanese compatibility characters before email, forms, or submission.
Open tool →
Text tools
Line Break and Space Cleaner
Clean line breaks, spaces, tabs, and blank lines from copied text.
Open tool →