Privacy Policy

1. Information we collect

At ChemBioTube, we are committed to protecting your privacy. We collect the minimum information needed to provide you with the best experience: - Tool preferences (stored locally in your browser) - Language preference - Theme preference (dark/light mode) - Anonymous usage analytics to improve our tools

2. How we use your information

We use the information we collect to: - Provide and maintain our tool services - Improve user experience and tool performance - Remember your preferences across browsing sessions - Analyze usage patterns to improve our tools

3. Data storage and security

Your data is primarily stored locally on your device using your browser's localStorage. We do not store personal information on our servers. We implement appropriate security measures to prevent unauthorized access.

4. Third-party services

Our website uses third-party services for analytics and advertising: - Google Analytics 4 — anonymous usage statistics (privacy policy: https://policies.google.com/privacy) - Google AdSense — advertising that keeps our tools free to use (privacy policy: https://policies.google.com/privacy) These providers may collect data such as approximate location, device and browser type, and the pages you visit, in line with their own privacy policies. We never sell your personal information.

5. Cookies and local storage

We use cookies and browser local storage to enhance your experience: - First-party: essential functionality and your preferences (language, theme, recently used tools). These hold no personal data and stay in your browser. - Third-party advertising cookies: set by Google AdSense, including the DoubleClick cookie, to measure ad performance and — where you consent — to show ads based on your earlier visits to this and other websites. You can manage cookies in your browser settings and opt out of personalized advertising via https://adssettings.google.com, https://www.aboutads.info/choices or, in the EU, https://www.youronlinechoices.eu. Blocking advertising cookies does not break any tool: you will simply see non-personalized ads or none at all.

6. Advertising and consent (EEA, UK and Switzerland)

Visitors in the European Economic Area, the United Kingdom and Switzerland are asked for consent before any advertising cookie is set, through a Google-certified consent management platform. Until you make a choice, no advertising cookies are stored and only non-personalized ads may be shown; Google consent signals keep analytics and advertising storage switched off in the meantime. You can change or withdraw your choice at any time through the link in the consent message, or by clearing this site's data in your browser.

7. Children's privacy

Our tools are suitable for all ages. We do not knowingly collect personal information from children under 13. If you are a parent and believe your child has provided personal information, please contact us.

8. Your rights

You have the right to: - Clear your data and preferences at any time - Disable cookies in your browser - Request information about the data we collect - Contact us about privacy concerns

9. Policy updates

We may update this privacy policy from time to time. We will notify users of any significant changes by posting the new policy on this page.

10. Contact us

If you have any questions about this privacy policy, please contact us: - Email: support@chembiotube.com

• support@chembiotube.com