At Dongbook, accessible from https://dongbook.com, we respect the privacy of our visitors.
This Privacy Policy explains what information may be collected when you use our website, how that information may be used, and the choices available to you.
By using Dongbook, you acknowledge the practices described in this Privacy Policy.
1. Information We Collect
Dongbook is primarily designed to provide online calculators and informational content.
We do not require visitors to create an account simply to use our basic calculators.
Depending on how you interact with the website, information may be collected automatically or voluntarily.
Information You Provide
If you contact us by email or through a contact form, you may provide information such as:
- Your name.
- Your email address.
- The content of your message.
- Other information you voluntarily include in your communication.
Please do not send sensitive personal information through our contact forms or email unless it is specifically necessary.
Information Collected Automatically
When you visit a website, certain technical information may be automatically transmitted by your browser or device.
This may include information such as:
- IP address.
- Browser type.
- Device type.
- Operating system.
- General geographic information.
- Referring website.
- Pages visited.
- Date and time of access.
- General interaction information.
This information may be used for website security, technical maintenance, analytics, performance improvement, and understanding how visitors use the website.
2. Calculator Information
Dongbook provides calculators that may require visitors to enter information such as dates.
For example, the Age Calculator may require a date of birth and a target date.
The website is designed to process ordinary calculator inputs for the purpose of providing the requested result.
Visitors should avoid entering unnecessary sensitive information into calculator fields.
Unless explicitly stated otherwise, calculator inputs should not be considered a secure storage service or personal records system.
3. Cookies
Dongbook may use cookies and similar technologies.
Cookies are small files that can be stored on your device when you visit a website.
Cookies may be used for purposes such as:
- Website functionality.
- Remembering preferences.
- Understanding website usage.
- Improving website performance.
- Security.
- Advertising.
Some cookies may be placed by third-party services used by the website.
4. Google AdSense and Advertising
Dongbook may use Google AdSense or other advertising services to display advertisements.
If Google AdSense is used on the website, Google and its partners may use cookies, web beacons, IP addresses, or similar technologies to provide, measure, and personalize advertising in accordance with applicable policies and user choices.
Third-party vendors, including Google, may use cookies to serve advertisements based on a user’s previous visits to this website or other websites.
Users may learn more about how Google uses information from sites and apps that use its services through Google’s published privacy information.
Advertising technologies may allow advertising providers to:
- Display relevant advertisements.
- Measure advertising performance.
- Detect invalid advertising activity.
- Limit repeated advertisements.
- Understand general advertising interactions.
The availability and behavior of advertising technologies may change over time.
5. Third-Party Services
Dongbook may use third-party services to support website functionality, analytics, security, hosting, advertising, or other technical operations.
These third parties may process certain technical information in accordance with their own privacy policies and applicable laws.
We recommend reviewing the privacy policies of third-party services when appropriate.
6. Analytics
Dongbook may use analytics services to understand how visitors interact with the website.
Analytics information can help us understand:
- Which pages receive visits.
- How visitors navigate the website.
- Which tools are used.
- General traffic patterns.
- Technical problems.
- Website performance.
Analytics information is generally used in aggregate or statistical form to improve the website.
7. How We Use Information
Information may be used for purposes including:
- Operating the website.
- Providing calculator functionality.
- Responding to messages.
- Improving website content.
- Improving website performance.
- Preventing abuse and fraudulent activity.
- Maintaining website security.
- Understanding website usage.
- Complying with legal obligations.
- Supporting advertising services where applicable.
We do not intend to use information for purposes incompatible with this Privacy Policy.
8. Data Sharing
We may share information with service providers when reasonably necessary to operate, secure, analyze, or improve the website.
For example, third-party providers may support:
- Website hosting.
- Analytics.
- Security.
- Advertising.
- Technical infrastructure.
We may also disclose information when required by applicable law, legal process, court order, or governmental request.
9. Data Retention
The amount of time information is retained depends on the type of information and the reason it was collected.
Technical information may be retained according to the policies of the services that process it.
Messages sent directly to Dongbook may be retained for as long as reasonably necessary to respond to the inquiry, maintain records, resolve disputes, or comply with legal obligations.
10. Children’s Privacy
Dongbook is not specifically directed toward children under the age required by applicable privacy laws.
We do not knowingly request or intentionally collect unnecessary personal information from children.
If you believe that a child has provided personal information to us, please contact us so that we can review the situation and take appropriate action where required.
11. Your Privacy Rights
Depending on your location and applicable law, you may have rights concerning your personal information.
These may include the right to:
- Request access to certain personal information.
- Request correction of inaccurate information.
- Request deletion where legally applicable.
- Object to certain processing.
- Request restriction of certain processing.
- Withdraw consent where processing is based on consent.
- Exercise applicable rights concerning cookies or personalized advertising.
The availability of these rights depends on applicable law and circumstances.
To submit a privacy-related request, contact:
[YOUR EMAIL ADDRESS]
12. External Links
Dongbook may contain links to websites operated by third parties.
We are not responsible for the privacy practices, security, content, or policies of external websites.
We recommend reviewing the privacy policy of any third-party website before providing personal information.
13. Security
We take reasonable measures to protect information handled through the website.
However, no internet transmission or electronic storage system can be guaranteed to be completely secure.
Visitors should therefore avoid sending unnecessary sensitive information through public website forms or email.
14. Changes to This Privacy Policy
We may update this Privacy Policy from time to time.
When changes are made, the “Last Updated” date at the beginning of this page may be changed.
Visitors are encouraged to review this page periodically.