AI-Select Chrome Extension

AI-Select is a zero-backend Chrome extension that adds a small floating action button next to text selected on any webpage. Pressing it triggers Chrome's built-in on-device AI (Summarizer API via Gemini Nano) to instantly generate concise, actionable summaries.

✨ Features

• Contextual UI: Hover and click the lightweight ✨ floating button right alongside your active text selection.
• Privacy-First: Operates 100% locally on your machine. No server-side analytics, no remote API calls, no cloud latency.
• Highly Configurable: Use the extension popup to customize output preferences (TLDR, Teaser, Key Points, Headline), Lengths (Short, Medium, Long), and Formats (Markdown, Plain text).
• Real-time Streaming: Toggle the streaming capability to see the text generated chunk-by-chunk natively.
• Smart Dismissal: Hides the UI cleanly when not in use or when clicking away, equipped with dedicated exit icons.

🚀 Setup & Installation

1. Open Chrome and navigate to chrome://extensions.
2. Enable Developer mode in the top right corner.
3. Click Load unpacked.
4. Select the AI-Select folder.
5. Pin the extension on your toolbar to configure settings.

🛠️ Requirements & Notes

Running on-device AI requires substantial underlying hardware support:

• Google Chrome version 138+.
• Hardcap requirements on Device Memory (>16GB CPU or >4GB GPU).
• At least 22GB of storage.
• An unmetered connection for the one-time local model download fallback.

The extension executes a fallback download listener if the AI nano model hasn't been instantiated yet natively in Chrome.

⚠️ Troubleshooting (The device is not eligible)

If you get an error stating "The device is not eligible for running on-device model.", you need to manually enable the API flags.

Do this:

1. Go to chrome://flags/#optimization-guide-on-device-model
2. Set it to Enabled BypassPerfRequirement. (Note: Plain "Enabled" often fails to expose the API if the benchmark hasn't run).
3. Go to chrome://flags/#prompt-api-for-gemini-nano
4. Set it to Enabled.
5. Relaunch Chrome completely.

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🌐 Explore Other Chrome AI APIs

Chrome has other built-in AI APIs which you can check out on the getting started guide:

• Translator API
• Language Detector API
• Summarizer API
• Writer API and Rewriter API
• Proofreader API
• Prompt API

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📚 Documentation

For deeper architectural outlines, mechanical overviews of the Summarizer implementation, and contribution context, please refer to the Developer Guide.