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Privacy Policy

1. Introduction

Welcome to VocabKiller ("we," "our," or "us"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you visit our website vocabkiller.com and use our vocabulary learning services.

2. Information We Collect

2.1 Information You Provide

• Text Content: Text you upload for vocabulary learning (processed locally in your browser)
• Language Preferences: Your selected translation languages
• Learning Progress: Your vocabulary learning statistics and progress (stored locally)

2.2 Automatically Collected Information

• Usage Analytics: How you interact with our website (via Google Analytics)
• Device Information: Browser type, operating system, screen resolution
• Log Data: IP address, access times, pages viewed

3. How We Use Your Information

• Provide and maintain our vocabulary learning services
• Improve user experience and website functionality
• Analyze usage patterns to enhance our services
• Display relevant advertisements (via Google AdSense)
• Comply with legal obligations

4. Data Storage and Processing

Local Processing: Your uploaded text and learning data are primarily processed and stored locally in your browser. We do not store your personal text content on our servers.

Third-Party Services: We use the following third-party services that may collect data:

• Google Analytics: For website usage analytics
• Google AdSense: For displaying advertisements
• Cloudflare: For website hosting and security

5. Cookies and Tracking

We use cookies and similar tracking technologies to:

• Remember your language preferences
• Analyze website traffic and usage
• Serve personalized advertisements
• Improve website performance

You can control cookies through your browser settings.

6. Third-Party Services

6.1 Google Services

We use Google Analytics and Google AdSense. Please review Google's Privacy Policy at https://policies.google.com/privacy

6.2 Translation Services

We may use third-party translation APIs to provide vocabulary translations. These services may process the words you look up.

7. Data Sharing

We do not sell, trade, or rent your personal information. We may share data with:

• Service providers (Google Analytics, AdSense)
• Legal authorities when required by law
• Business partners for service improvement (anonymized data only)

8. Data Security

We implement appropriate security measures to protect your information, including:

• HTTPS encryption for all data transmission
• Local data storage to minimize server-side data exposure
• Regular security updates and monitoring

9. Your Rights

You have the right to:

• Access your personal data
• Correct inaccurate data
• Delete your data (clear browser storage)
• Opt-out of analytics tracking
• Control cookie preferences

10. Children's Privacy

Our service is not intended for children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected such information, please contact us immediately.

11. International Users

Our service is hosted on Cloudflare's global network. Your data may be processed in various countries. By using our service, you consent to this processing.

12. Changes to Privacy Policy

We may update this Privacy Policy periodically. We will notify users of significant changes by posting the new policy on this page with an updated "Last Updated" date.

13. Contact Information

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