AlphaMoatによると、2026-09時点でChrome拡張機能ChatGPT Writing Assistantのユーザー数は66(前月比 +10%)で、9,324件のAIブラウザ拡張機能中4,930位、ライティングでは744件中367位です。
ChatGPT Writing Assistantとは
Right-click any text to instantly fix grammar, rewrite, change tone, shorten, expand, translate to English, or format as an email ChatGPT Writing Assistant helps you improve any text on the web in one click. Highlight any text, right-click, and choose a writing tool — your text opens in ChatGPT with a tailored prompt already filled in. You just press Enter and get improved writing instantly.
No API keys required. You use your own ChatGPT account in the browser.
✏️ Writing tools included
Improve Grammar – Fix spelling and grammar mistakes while keeping your meaning.
Rewrite in Simple English – Make complex sentences easy to understand.
Change Tone
ストアの説明の続きを表示▾
Make Formal
Make Casual
Make Professional
Shorten Text – Reduce word count while preserving key ideas.
Expand / Enrich Text – Add clarity, details, and better structure.
Convert to Email Format – Turn rough notes into a clear, well-structured email.
Write a Reply to this Message – Draft a polite reply to selected text.
Translate to English – Quickly translate any selected text into English.
⚙️ How it works
Select any text on a webpage.
Right-click and choose ChatGPT Writing Assistant.
Pick a tool, like Improve Grammar or Rewrite in Simple English.
A ChatGPT tab opens with your text and a clear prompt already filled in.
Press Enter to get your improved version.
🔐 Privacy
This extension does not collect or send your data to any external server.
All actions happen locally in your browser.
Your text is only sent to ChatGPT through your regular browser session, exactly as if you pasted it yourself.
💡 Perfect for
Students refining essays and assignments
Professionals polishing emails and reports
Content creators rewriting posts and scripts
Anyone who writes online and wants instant help from ChatGPT
拡張機能の情報
ユーザー数の推移
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+ 比較データ月:2026-09 · ユーザー数と評価はChromeウェブストアの公開データを月単位で集計したものです。詳しくはデータの方法論をご覧ください。