データ月 2026-09

GemType

Name: GemType
Rating: 5 (2 reviews)
Author: matily

ライティング

AIライティング

matilyGrammarly-style grammar checking and text refinement on any website, powered by the Gemini API (bring your own key).

Chromeに追加 ↗公式サイト ↗

AlphaMoatによると、2026-09時点でChrome拡張機能GemTypeのユーザー数は246(前月比 +158.9%)、評価は5(2件のレビュー)で、9,324件のAIブラウザ拡張機能中2,956位、ライティングでは744件中245位です。

ユーザー数 · 2026-09

246+158.9%

評価

★ 52

総合順位(9,324件中)

#2,956

ライティング内の順位

#245/ 744

GemTypeとは

Chromeウェブストアより

Grammarly-style grammar checking and text refinement on any website, powered by the Gemini API (bring your own key). GemType is a free, open-source Grammarly alternative. It checks your grammar and spelling and rewrites your text as you type, on any website — powered by Google's Gemini AI and your own free API key. No account, no subscription, and no company server in the middle.

HOW IT WORKS

Type in any text field on the web
Mistakes get a wavy underline a second after you pause
Click an underline to accept the fix (Ctrl/Cmd+Z always undoes it)
After each fix, the surrounding sentence is automatically re-checked

REWRITE ON DEMAND Select any text and choose Improve, Fix grammar, Shorten, Formal, or Casual — from a floating toolbar or the right-click menu. Rewrites keep your meaning; corrections keep your exact wording.

BEYOND THE BROWSER GemType is also a Microsoft Word add-in and a desktop app for Mac, Windows, and Linux that works in any application.

BRING YOUR OWN KEY (FREE) GemType uses your personal Gemini API key from Google AI Studio — free tier, no credit card. Requests go directly from your browser to Google; we never see your text or your key.

ストアの説明の続きを表示▾

PRIVATE BY DESIGN

No accounts, no tracking, no analytics
Your key and settings stay on your device
Your text is sent only to Google's Gemini API
Fully open source, so you can verify exactly what it does
Turn GemType off globally or per-site in one click

Works in your language — GemType auto-detects what you are writing, or you can pin a language in settings.

FAQ Is GemType free? Yes — it is free and open source, and it runs on your own free Gemini API key (no credit card). There is no subscription.

Where does my text go? Only to Google's Gemini API, using your own key. There is no GemType server, no account, and no analytics.

Why does it need access to the pages you visit? So it can check your writing in the text field you are using. It stays inactive until you focus a field, and you can disable any site in one click.

Free and open source (Apache-2.0). Made by Matily.