AlphaMoatによると、2026-09時点でChrome拡張機能PhantomAIのユーザー数は60(前月比 +71.4%)、評価は5(1件のレビュー)で、9,324件のAIブラウザ拡張機能中5,110位、汎用AIでは2,418件中1,263位です。
Get AI-powered answers for anything on your screen. Highlight text, select images, or ask questions instantly from any webpage. Instant AI answers on any screen ⚡ highlight text, capture screenshots, and paste answers without ever leaving the page.
Stop wasting time switching between tabs, searching for answers, and copying things back and forth. PhantomAI brings AI directly into every webpage you visit. Select text, drag a box around anything, and get accurate answers in seconds.
Why choose PhantomAI? 🤔
🖥️ Built to Be Invisible PhantomAI runs quietly in the background on every page. No popups, no new tabs, no clutter. Answers appear as floating text right where you're working, then fade away. Designed to stay out of your way while giving you exactly what you need.
🔍 Instant Text Answers Highlight any text on any webpage and press a single key. AI reads it, processes it, and gives you a concise answer instantly. Works on Google Forms, Canvas, Blackboard, Coursera, and every other site.
📸 Screenshot Queries Some questions aren't just text. Drag a box around images, diagrams, math equations, charts, or anything else on screen. AI reads everything inside the box and answers it. No copy-pasting, no describing what you see.
📋 One-Key Paste Click into any text field and press a key. Your last AI answer gets typed in automatically, character by character. Looks natural, works everywhere.
🧠 Context Documents Upload PDFs, notes, study guides, or lecture slides directly into the extension. AI searches your documents every time you ask a question, pulling in the most relevant information to give you better answers.
🖼️ Reference Images Capture screenshots of formula sheets, reference tables, or notes. AI sees them alongside every future question you ask, so you never have to re-explain your context.
⚡ Three Plans for Every Need
Free: 20 queries/day with a standard AI model. All features included, no credit card needed.
Pro ($8/mo): 200 queries/day with a smarter AI model and priority support.
Unlimited ($20/mo): No daily limits with the most powerful AI model available.
🎨 Fully Customizable Remap every hotkey, change answer text color, size, opacity, adjust display duration, customize the capture indicator, and more. Make it look and feel exactly how you want.
How to Use 📚
1. Install the extension and click the icon to sign in. 2. Highlight text on any page and press ] to get an AI answer. 3. Hold Ctrl/Cmd + ] and drag a box for screenshot answers. 4. Click into a text field and press [ to paste the answer.
Watch demo videos and read the full guide at: phantom-ai.app/docs
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📞 Need Help?
Visit our website to learn more and reach out with any questions.
💬 Support: https://phantom-ai.app/support
📖 Terms of Use: https://phantom-ai.app/terms
🔐 Privacy Policy: https://phantom-ai.app/privacy
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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。