Privacy Policy

Last updated: May 2026

1. What ToneHue Does

ToneHue is a Chrome browser extension that analyzes the emotional tone of text you type in your browser. It provides a real-time color signal around your text box to help you understand how your writing may be interpreted before you send it.

2. What Data We Collect

ToneHue collects the following data:

• Text content you type — sent temporarily to Anthropic's API for tone analysis. This text is not stored by ToneHue after the analysis is complete.
• Extension settings — your glow intensity preference, selected context mode, custom colors, and list of blocked sites. These are stored locally in Chrome's sync storage on your device.
• Your Anthropic API key — stored locally in Chrome's sync storage. It is never transmitted to ToneHue servers.

ToneHue does not collect:

• Your name, email address, or any account information
• Browsing history or URLs visited
• Any data from password fields, payment forms, or secure inputs
• Usage analytics or behavioral data
• Any data from sites you have added to your blocked sites list

3. How Your Text Is Used

When you type in a text box with ToneHue active, your text is sent to the Anthropic API (api.anthropic.com) using your personal API key. Anthropic processes the text to return a tone classification and suggested rewrites. ToneHue does not retain a copy of this text after displaying the result.

Please review Anthropic's Privacy Policy to understand how they handle API requests.

4. Speech-to-Text

If you use ToneHue's built-in microphone feature, your voice is processed by your browser's built-in Web Speech API (provided by Google in Chrome). ToneHue does not record or store audio. Please review Google's Privacy Policy for details on how Chrome handles speech recognition.

5. Data Storage

All ToneHue settings are stored using Chrome's storage.sync API, which syncs your preferences across Chrome devices where you are signed in. This data never passes through ToneHue servers — it is managed entirely by Google Chrome.

6. Data Sharing

ToneHue does not sell, rent, trade, or share your data with any third parties except:

• Anthropic — your text is sent to their API for tone analysis using your own API key
• Google Chrome — settings sync and speech recognition are handled by Chrome's built-in services

We do not share data with advertisers, data brokers, or analytics platforms.

7. Security

Your Anthropic API key is stored locally in Chrome's encrypted sync storage. It is transmitted directly from your browser to Anthropic's API over HTTPS and never passes through ToneHue servers. We recommend keeping your API key private and regenerating it if you believe it has been compromised.

8. Children's Privacy

ToneHue is designed to support users of all ages including children and students, particularly those who may benefit from tone guidance such as individuals on the autism spectrum. We do not knowingly collect personal information from children under 13. ToneHue does not require account creation or any personal information to function.

9. Sensitive Fields

ToneHue is designed to never activate on password fields, payment forms, or other sensitive input types. If you encounter ToneHue activating on a sensitive field, please report it to us immediately so we can address it.

10. Your Rights and Controls

You have full control over ToneHue's behavior:

• Disable ToneHue on any site using the popup toggle
• Add sites to your blocked list in Settings
• Remove your API key from Settings at any time
• Uninstall the extension entirely from Chrome to remove all local data

11. Changes to This Policy

We may update this privacy policy from time to time. When we do, we will update the date at the top of this page. Continued use of the extension after changes constitutes acceptance of the updated policy.