データ月 2026-09

Gemini Writing Assistant

ライティング

AIライティング

A Gemini-powered writing assistant triggered by a shortcut or context menu.

Chromeに追加 ↗

AlphaMoatによると、2026-09時点でChrome拡張機能Gemini Writing Assistantのユーザー数は120(前月比 +31.9%)で、9,324件のAIブラウザ拡張機能中3,934位、ライティングでは744件中321位です。

ユーザー数 · 2026-09

120+31.9%

評価

総合順位(9,324件中)

#3,934

ライティング内の順位

#321/ 744

Gemini Writing Assistantとは

Chromeウェブストアより

A Gemini-powered writing assistant triggered by a shortcut or context menu. GEMINI WRITING ASSISTANT: WRITE SMARTER, FASTER, EVERYWHERE

Transform your browser into a professional writing studio. The Gemini Writing Assistant brings the power of Google’s latest AI directly into your workflow, helping you draft emails, polish reports, and overcome writer's block without ever switching tabs.

Whether you need to fix grammar, change your tone, or dictate complex thoughts into clear text, this extension is your all-in-one solution.

✨ KEY FEATURES

🚀 Context-Aware Rewriting (Alt+R) Select any text you wrote and press Alt+R. The assistant analyzes your text and the surrounding context to provide rewrites that fit perfectly. Instantly fix grammar, improve clarity, or expand on simple bullet points.

💡 Gemini Spotlight (Alt+P) Need to brainstorm or draft from scratch? Press Alt+P to open the Spotlight—a floating, dedicated AI window. Ask questions, generate ideas, or draft content overlaying your current tab, then copy it with one click.

ストアの説明の続きを表示▾

🎤 AI-Powered Dictation (Alt+L) Stop typing and start speaking. Press Alt+L to activate dictation. Unlike standard voice typing, this uses Gemini to clean up your speech in real-time, removing "umms," fixing punctuation, and structuring your rambling thoughts into polished prose. Press Alt + O and to switch process styles.

🎭 Master Your Tone Send the right message every time. Use the floating menu to instantly transform your text:

Concise (Default): Shorten wordy text instantly.
Grammar Only: Fix mistakes without changing your voice.
Professional: Perfect for emails and reports.
Friendly: Great for Slack and social media.

Press Alt + O and to quickly switch between styles.

🔒 PRIVACY FIRST BY DESIGN

We believe AI shouldn't cost you your privacy.

Site-Specific Control: The extension is OFF by default. It only runs on websites you explicitly enable (e.g., "Enable for mail.google.com"), keeping your browsing habits private.
Zero Data Collection: We have no servers. We do not track you.
Local Storage: Your API key and settings live 100% on your device.
Direct Connection: Your browser communicates directly with Google's API. There is no middleman.

⚙️ HOW IT WORKS

1. Setup: Enter your free Google Gemini API key (easy guide included!). 2. Enable: Click the extension icon and select "Enable for this site" on pages where you want to use it. 3. Use: Highlight text + Alt+R to Rewrite, click a text box + Alt+L to Dictate, or press Alt+P anywhere for Spotlight.

⚠️ REQUIREMENT: BRING YOUR OWN KEY

To ensure privacy and keep this tool free of monthly subscriptions, this extension requires your own Google Gemini API Key.

Is it free? Yes! Google provides a generous free tier for the Gemini API that is sufficient for almost all personal use.
Is it hard to get? No. The extension includes a 2-minute guide to getting your key from Google AI Studio.

PERFECT FOR:

Professionals drafting high-stakes emails.
Developers writing documentation or commit messages.
Students refining essays and checking grammar.
Non-Native Speakers looking to write with native-level fluency.
Stop struggling with words. Install Gemini Writing Assistant and write with confidence today!