Privacy Policy

1. Scope of this policy

This policy applies to BidyutBill (this website) and describes our practices for any personal data processed when you visit, including through cookies, log files, contact forms, and third-party advertising services embedded on the site.

2. Calculator inputs stay on your device

The numbers you enter into any calculator on this site — units consumed, sanctioned load, meter category, appliance wattage, taka amounts — are processed entirely in your browser using client-side JavaScript. We do not transmit, store, or have any visibility into these inputs on our servers. Refreshing or closing the page clears them.

3. Information we do collect

We collect limited information in the following situations:

• Contact form: if you submit our contact form or email us, we receive the name, email address and message you provide, used solely to respond to your inquiry.
• Server log files: like most websites, our hosting infrastructure automatically logs standard technical data such as IP address, browser type, referring page, and timestamps, used for security, debugging and aggregate traffic analysis.
• Analytics: we may use privacy-conscious analytics tools to understand aggregate traffic patterns (which pages are read, approximate location at country/city level, device type). This data is aggregated and is not used to build individual profiles for purposes beyond understanding site usage.

4. Cookies

Cookies are small text files stored on your device. We use cookies for essential site functionality (such as remembering your light/dark theme preference) and, where enabled, for analytics and advertising as described below. You can control or delete cookies through your browser settings; blocking cookies may affect some site functionality such as theme persistence.

5. Google AdSense and third-party advertising

This site displays advertisements served by Google AdSense and its advertising partners. Google and its partners use cookies — including the DoubleClick DART cookie — to serve ads based on your prior visits to this and other websites on the Internet. The DART cookie enables Google and its partners to serve ads based on your visit to this site and/or other sites.

Third-party vendors, including Google, may also use cookies to serve ads based on a user's prior visits to this website or other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to our site and/or other sites on the Internet. We do not control the cookies placed by these third-party advertising vendors, and this policy does not cover their use of cookies or data.

You may opt out of personalised advertising by visiting Google Ads Settings. Alternatively, you can opt out of a third-party vendor's use of cookies for personalised advertising by visiting www.aboutads.info.

6. What we do not do

We do not sell personal data. We do not require account creation to use any calculator, guide or tariff page. We do not ask for or store your electricity account number, meter number, NID or any other identifying utility information anywhere on this site.

7. Children's privacy

This site is a general-audience reference resource and is not directed at children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us personal information, contact us and we will delete it.

8. Your rights (GDPR / CCPA)

If you are located in the European Economic Area, the UK, or in California or another jurisdiction with comparable privacy law, you may have rights to access, correct, delete, or restrict the use of your personal data, and to object to processing based on legitimate interest (including interest-based advertising). To exercise any of these rights regarding data we hold directly (such as a contact-form submission), email us using the details below. Requests regarding data held by Google or other advertising vendors should be directed to those vendors, or managed via the opt-out tools in Section 5.

9. Data retention

Contact-form messages and related correspondence are retained only as long as needed to respond to and resolve the inquiry, and are deleted or anonymised thereafter unless we are legally required to retain them longer. Server logs are retained for a limited period for security and diagnostic purposes and then purged or aggregated.

10. Changes to this policy

We may update this policy as our practices or applicable law change. Material changes will be reflected by updating the "last updated" date at the top of this page. Continued use of the site after a change constitutes acceptance of the revised policy.

11. Contact us

Questions about this privacy policy can be sent to olopia4u@gmail.com or via our contact page.