개인정보처리방침

1. Introduction

This Privacy Policy outlines how decimalcalc ("we", "our", or "us"), operating at https://decimalcalc.online, collects, uses, and safeguards information when you access our calculation tools, mathematical engines, and educational resources.

By using decimalcalc.online, you consent to the practices described in this Privacy Policy. If you do not agree with any terms, please discontinue use of our site.

2. Information We Collect

We collect minimal information required to ensure reliable website delivery, security, and performance:

• Client-Side Calculations: All numerical calculations, binary-hex conversions, and fraction divisions run locally inside your browser via JavaScript. Your calculations are not saved to our servers.
• Standard Server Log Files: Like standard web hosts, our web servers automatically log anonymous traffic details, including Internet Protocol (IP) addresses, browser types, Internet Service Providers (ISP), referring/exit pages, platform types, date/time stamps, and click counts. Log files are not linked to personally identifiable information.
• Voluntary Communications: If you contact us via email or our contact form, we collect your name, email address, and message content solely to respond to your inquiry.

3. Cookies and Web Beacons

A cookie is a small text file placed on your device by a web server. decimalcalc.online uses cookies to:

• Remember your local preferences (such as Light/Dark UI theme selection and language choices).
• Analyze aggregated website traffic metrics to improve user interface speed and tool layout.
• Enable third-party advertising partners to serve relevant advertisements.

4. Google AdSense & Third-Party Advertising

We may display advertisements provided by third-party advertising networks, including Google AdSense. Google, as a third-party vendor, uses cookies to serve ads on our site:

• Google's use of advertising cookies enables it and its partners to serve ads to users based on their visit to decimalcalc.online and/or other sites on the Internet.
• Users may opt out of personalized advertising by visiting Google Ads Settings or by visiting www.aboutads.info.
• Third-party ad servers or ad networks use technology in their advertisements and links that appear on decimalcalc.online, which are sent directly to your browser. They automatically receive your IP address when this occurs.

5. GDPR Compliance (European Economic Area)

If you are a resident of the European Economic Area (EEA), you have data protection rights under the General Data Protection Regulation (GDPR), including:

• The right to access, update, or delete the personal information we have about you.
• The right of rectification if your data is inaccurate or incomplete.
• The right to object to or restrict our processing of your personal data.
• The right to withdraw consent at any time where we relied on your consent to process information.

6. CCPA / CPRA Privacy Rights (California Residents)

Under the California Consumer Privacy Act (CCPA) and California Privacy Rights Act (CPRA), California consumers have the right to:

• Request that a business disclose the categories and specific pieces of personal data collected.
• Request the deletion of any personal data collected by the business.
• Direct a business that sells or shares personal data not to sell or share your data (We do not sell personal data).

7. Children's Information (COPPA)

Protecting children's privacy online is a priority. decimalcalc.online does not knowingly collect any personally identifiable information from children under the age of 13. If you believe your child has provided personal information on our website, please contact us immediately, and we will promptly remove such records from our systems.

8. External Links

Our website contains links to external sites, educational resources, and documentation. Please be aware that decimalcalc is not responsible for the privacy practices of other sites. We encourage users to read the privacy statements of every website that collects personal information.

9. Changes to This Privacy Policy

We may update our Privacy Policy periodically to reflect technological, legal, or operational updates. Any modifications will be posted on this page with an updated revision date.