Privacy Policy

Last Updated: October 2026

Welcome to BTechBook.in ("we", "our", or "us"). We operate an open-access engineering educational platform dedicated to providing undergraduate B.Tech and Diploma students with lecture notes, curriculum guides, formula sheets, and study materials. We respect your personal privacy and are committed to maintaining transparent data practices in compliance with global standards, including the Google AdSense Publisher Policies, the General Data Protection Regulation (GDPR), and the California Consumer Privacy Act (CCPA/CPRA).

Our Core Privacy Commitment: BTechBook.in does not require account registration, login credentials, or payment details. You can freely read all academic guides and access lecture notes without providing personal identifiers like your name or phone number.

1. Information We Collect

When you visit BTechBook.in, certain non-personally identifiable technical information is automatically generated and collected via server log files, browser headers, and analytics cookies:

Browser & Device Metadata: Browser type, version, operating system, device model, language preferences, and screen resolution.
Log & Usage Data: Internet Protocol (IP) address (anonymized prior to storage), Internet Service Provider (ISP), referring/exit pages, date/time stamps, clickstream data, and navigation patterns on our site.
Search & Content Interaction: Search queries submitted in on-page search filters to improve course discoverability.

2. How We Use Collected Information

The information we collect is utilized strictly for operational, diagnostic, and academic service optimization:

To maintain system uptime, performance, and responsive mobile-first accessibility.
To analyze anonymous traffic trends and understand which engineering subjects (e.g., Thermodynamics, Data Structures, Algorithms) require expanded study guides.
To protect the website against automated scraping, distributed denial-of-service (DDoS) attacks, and malicious exploits.
To display contextual, non-intrusive advertisements via Google AdSense that support the server and CDN hosting costs of keeping our resources completely free for students.

3. Google AdSense & Third-Party Advertising Policy

BTechBook.in partners with Google to serve advertisements through Google AdSense. In order to comply strictly with Google Publisher Policies, we disclose the following operational requirements:

Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites on the Internet.
Google's use of advertising cookies (such as the DoubleClick cookie) enables it and its partners to serve ads to our visitors based on their visit to BTechBook.in and/or other websites across the Internet.
Users may opt out of personalized advertising by visiting the Google Ads Settings page.
Alternatively, you can opt out of a third-party vendor's use of cookies for personalized advertising by visiting www.aboutads.info or the Network Advertising Initiative (NAI) Opt-Out Tool.
For comprehensive details on how Google handles data collected on partner websites, please consult Google's official documentation: How Google uses information from sites or apps that use our services.

4. Web Analytics (Google Analytics 4)

We use Google Analytics 4 (GA4) to monitor aggregate visitor engagement and demographic trends. Google Analytics utilizes first-party cookies to record user interactions. IP addresses collected by GA4 are automatically anonymized. You can prevent Google Analytics from recording your visits by installing the official Google Analytics Opt-out Browser Add-on.

5. Cookie Control & Browser Management

Cookies are small text files placed on your device to ensure core site functions, remember theme settings, and tailor advertising. You have complete control over cookies through your web browser preferences:

Google Chrome: Settings > Privacy and Security > Cookies and other site data.
Mozilla Firefox: Options > Privacy & Security > Cookies and Site Data.
Apple Safari: Preferences > Privacy > Manage Website Data.
Microsoft Edge: Settings > Cookies and site permissions.

Note: Disabling cookies will not affect your ability to view lecture notes or read academic study guides on BTechBook.in.

6. General Data Protection Regulation (GDPR) â€“ Rights for EEA/UK Visitors

If you reside within the European Economic Area (EEA) or the United Kingdom, you are entitled to statutory rights under the GDPR regarding your personal data:

Right of Access: You may request confirmation of whether any personal data concerning you is processed.
Right to Rectification: You may request correction of inaccurate data.
Right to Erasure ("Right to be Forgotten"): You may request the deletion of any personal data stored by our servers.
Right to Object & Restrict Processing: You have the right to object to automated data collection and marketing profiling.

To exercise any of these rights, please email us directly at asnstudios.app@gmail.com. We respond to verified requests within 30 days without fee.

7. California Consumer Privacy Act (CCPA / CPRA) Rights

For visitors residing in California, the CCPA and California Privacy Rights Act (CPRA) grant specific consumer protections:

Right to Know: The categories of personal information collected, sources, and commercial purposes.
Right to Delete: Deletion of personal information collected from the consumer.
Do Not Sell or Share My Personal Information: BTechBook.in does not sell, rent, or lease personal information to third parties for monetary consideration. Personalized advertising cookies are managed as disclosed in Section 3.
Non-Discrimination: We do not deny educational content or charge different prices for exercising your privacy rights.

8. External Academic Links & Hosting Services

To provide fast, reliable document delivery, BTechBook.in hosts verified study notes on trusted developer repositories and content delivery networks (including GitHub Raw content distribution). While we vet all uploaded academic PDFs for integrity and safety, we do not control the independent privacy policies or terms of third-party platforms.

9. Children's Privacy (COPPA Compliance)

BTechBook.in provides higher-education engineering curricula intended for university students, polytechnic diploma candidates, and adult learners. We do not knowingly collect or solicit personal identifiable information from children under the age of 13 in accordance with the Children's Online Privacy Protection Act (COPPA). If you believe a child has provided us with personal information, please notify us immediately for prompt deletion.

10. Data Security

We enforce industry-standard security protocols, including 256-bit Secure Sockets Layer (SSL/TLS) encryption across all endpoints, strict Content Security Policies (CSP), and automated vulnerability auditing to prevent unauthorized interception or alteration of your browsing data.

11. Changes to This Privacy Policy

We reserve the right to update this policy periodically to reflect evolving regulatory frameworks or service modifications. Any changes will be published immediately on this URL with an updated "Last Updated" revision timestamp.

12. Contact Information

If you have questions, feedback, or data privacy requests regarding this policy, please reach out to our administration team:

Website: BTechBook.in
Email: asnstudios.app@gmail.com
Contact Page: BTechBook Contact Form