Privacy Policy

Last Updated: January 12, 2026

At a glance

  • ✓ Prompt enhancement runs locally using Chrome's on-device AI
  • ✓ Your prompts are not sent to external servers
  • ✓ Enhanced prompts are saved locally for your history

What we store

Recent enhanced prompts (last 20) and extension version tracking — stored locally in your browser only.

Supported sites

Only works on: chatgpt.com, gemini.google.com

Scope

This privacy policy covers the Prompt Enhancer Chrome extension and the information it processes when you use it on supported websites.

If you are reading this on my portfolio website, note that the website and the extension are separate products. This page focuses on the extension's behavior.

Data we process and store

Prompts are processed locally. The extension does not transmit your prompt text to external servers for enhancement.

✓ Processed on device

Your prompt text is read from the input field only when you trigger enhancement. It is then processed locally using Chrome's built-in on-device AI (Gemini Nano).

✓ Stored locally on device

The extension stores your last 20 enhanced prompts in a "Recent Enhancements" history using Chrome's local storage API. This data remains on your device and is not transmitted anywhere. You can clear this history at any time from the extension popup.

✓ Extension state tracking

The extension stores minimal state information such as the last seen version number (to show update notifications). This is also stored locally.

✗ Not collected

The extension does not collect personal identifiers such as name, email, address, payment details, health data, location data, browsing history outside of supported sites, or any other personally identifiable information.

How the extension works

  1. The extension injects a small floating button into supported AI chat websites (ChatGPT and Google Gemini).
  2. When you click the Enhance button or press Ctrl+Shift+E, the extension reads your prompt text from the page input field.
  3. The prompt is sent to the extension's background service worker, which processes it locally using Chrome's on-device Gemini Nano AI model.
  4. The enhanced prompt is displayed to you in a modal window, and you can copy it to your clipboard.
  5. The enhanced prompt is automatically saved to your local "Recent Enhancements" history (last 20 prompts) so you can access it later from the extension popup.

🔒 Privacy guarantee

Prompt enhancement is designed to happen entirely on your device. No prompt text is intentionally sent by the extension to any external API or server. All processing uses Chrome's local AI capabilities.

Permissions explained

The extension requests the following Chrome permissions:

  • alarms

    Used to keep the background service worker responsive for processing prompt enhancement requests. This is not used for tracking, analytics, or any data collection.

  • storage

    Used to store local extension state such as your recent enhanced prompts (history) and version tracking for update notices. This data stays in your browser and is not transmitted anywhere.

  • host_permissions

    Allows the extension to run only on supported sites so it can inject the Enhance button and read the prompt text from the input field when you trigger enhancement.

    Supported sites only:

    • • chatgpt.com
    • • gemini.google.com

    The extension cannot access any other websites outside of these explicitly listed domains.

Data sharing

We do not sell, rent, or share your prompts or personal data with third parties.

Because the extension is designed to process prompts locally using Chrome's on-device AI, it does not rely on sending your prompt text to external services for enhancement.

No data leaves your device during the enhancement process.

Data retention

Enhanced prompts in your history are retained locally until you:

  • Clear the history using the "Clear All" button in the extension popup
  • Uninstall the extension (which removes all extension data)
  • Clear your browser's extension data manually

The extension automatically keeps only your most recent 20 enhanced prompts. Older prompts are automatically removed to save storage space.

Your choices and controls

You have full control over your data:

  • ✓Clear history: Use the "Clear All" button in the extension popup to delete all saved enhanced prompts instantly.
  • ✓Uninstall: Remove the extension at any time from chrome://extensions to delete all extension data from your browser.
  • ✓Control AI model: You control Chrome settings related to on-device AI model availability through chrome://flags and chrome://components.

Third-party services

The extension does not integrate third-party analytics, tracking pixels, or external prompt enhancement APIs.

Chrome may download or update the on-device AI model (Gemini Nano) as part of the browser's built-in feature set. That behavior is controlled by Chrome and your browser settings, not by the extension sending your prompts externally.

Chrome Web Store compliance: The use of information received from Google APIs adheres to the Chrome Web Store User Data Policy, including the Limited Use requirements.

Children's privacy

The extension is not intended to collect personal information from children under 13 years of age. Since the extension is designed to minimize data collection by keeping prompt enhancement local and on-device, this policy applies equally to all age groups.

Changes to this policy

We may update this privacy policy from time to time to reflect changes in the extension's functionality or legal requirements. Changes will be posted on this page with an updated "Last Updated" date at the top.

Continued use of the extension after changes constitutes acceptance of the updated policy.

Contact

If you have questions about this privacy policy or the extension's data practices, please contact: