Privacy Policy

Last updated: July 27, 2026

Dev Library (“we,” “us,” “our,” or “the Company”) operates the website devlibrary.in and the Dev Library mobile application (together, the “Service”). This Privacy Policy explains what information we collect, how we use it, how third parties such as Google use cookies on our Service to serve ads, and the choices available to you.

By using the Service, you agree to the collection and use of information as described in this policy.

1. Information We Collect

1.1 Information You Provide

Email address (e.g., if you contact us, subscribe, or comment)
Name (if provided voluntarily)
Any other information you choose to submit through contact forms

1.2 Information Collected Automatically

When you visit the Service, we and our third-party partners automatically collect:

IP address
Browser type and version
Device type and unique device identifiers
Pages visited, time spent on pages, and referring URLs
Approximate geographic location (derived from IP address)

1.3 Cookies and Similar Technologies

We use cookies, web beacons, and similar tracking technologies for:

Essential/functional cookies – to remember preferences and keep the site working properly.
Analytics cookies – to understand how visitors use the Service (e.g., Google Analytics).
Advertising cookies – to serve and measure ads (see Section 2 below).

You can control or disable cookies through your browser settings. Disabling cookies may affect some features of the Service, including personalized ads.

2. Advertising — Google AdSense and Third-Party Vendors

We use Google AdSense, a third-party advertising service provided by Google LLC, to display ads on the Service. Google and its partners use cookies (including the DoubleClick DART cookie) and similar technologies to serve ads based on your prior visits to this and other websites.

Google’s use of advertising cookies enables it and its partners to serve ads to you based on your visit to devlibrary.in and/or other sites on the Internet.
You may opt out of personalized advertising by visiting Google Ads Settings: https://adssettings.google.com
You can also opt out of many third-party vendors’ use of cookies for personalized advertising by visiting the Digital Advertising Alliance’s opt-out page: https://optout.aboutads.info
Users in the EEA/UK can manage advertising and analytics cookie consent through the cookie consent banner shown when you first visit the Service.

We may also work with other third-party ad networks and analytics providers, who may use their own cookies, pixel tags, or similar technologies to collect information about your visits to this and other websites in order to provide advertisements about goods and services that may interest you.

Google’s own privacy practices are described here: https://policies.google.com/technologies/ads

3. How We Use Information

We use collected information to:

Operate, maintain, and improve the Service
Serve and measure advertising, including personalized ads (subject to your consent/opt-out choices)
Analyze usage trends and site performance
Respond to inquiries sent through our contact page
Comply with legal obligations

4. Sharing of Information

We may share information with:

Advertising partners (e.g., Google AdSense) as described in Section 2
Analytics providers (e.g., Google Analytics) to understand Service usage
Service providers who help us operate the Service (e.g., hosting, CDN)
Law enforcement or regulators, where required by law
In connection with a merger, acquisition, or sale of assets, subject to notice to you

We do not sell your personally identifiable information to third parties for their own marketing purposes.

5. Children’s Privacy

Dev Library provides study material intended for use by school and college students, and we recognize that some visitors to specific sections of our Service (such as school-level NCERT, State Board, and NIOS content) may be under the age of 13.

We do not knowingly collect personal information (such as name or email address) directly from children under 13 without appropriate consent.
For visitors we know or believe to be under 13, we serve only non-personalized advertising (contextual ads that do not use behavioral tracking cookies), in line with Google’s requirements for child-directed treatment.
Parents or guardians who believe their child has provided us with personal data may contact us at the details in Section 9 to request removal.

6. Data Retention

We retain personal data only as long as necessary for the purposes described in this policy, or as required by law. Usage and analytics data is generally retained for a limited period for security and performance purposes.

7. Your Rights

Depending on your location, you may have the right to:

Access, correct, or delete your personal data
Withdraw consent to cookies/ad personalization at any time
Object to certain processing of your data

To exercise these rights, contact us using the details in Section 9.

8. Links to Other Websites

Our Service may contain links to third-party websites not operated by us (including advertiser sites). We are not responsible for the privacy practices of those sites and encourage you to review their policies separately.

9. Contact Us

If you have questions about this Privacy Policy or how your data is used, please contact us:

Via our contact page: https://devlibrary.in/contact-us

10. Changes to This Policy

We may update this Privacy Policy periodically. Changes will be posted on this page with an updated “Last updated” date. We encourage you to review this page periodically.