Terms of Service

By accessing and using Protocol Explorer (protocolexplorer.org), you accept and agree to be bound by these Terms of Service. If you do not agree with any part of these terms, please do not use the service.

Protocol Explorer is an educational website that teaches network protocols through interactive, animated lessons. The HTTP and HTTPS lessons are free for everyone. All remaining lessons can be unlocked for the account with a single one-time payment. The service is provided for informational and educational purposes only.

Some features (such as purchasing the unlock) require an account, created by signing in with Google. You are responsible for keeping your account credentials safe and for all activity that happens under your account. You must provide accurate information and be at least 13 years old (or the minimum digital-consent age in your country) to create an account.

The unlock is a one-time purchase processed by our payment provider (Stripe). Payment grants the signed-in account lifetime access to all lessons available at the time of purchase, plus lessons added later, at no additional charge. The purchase is not a subscription: it never renews and there are no recurring charges. Because access is delivered immediately, the unlock is generally non-refundable; if you believe you were charged in error, contact us and we will review your case. Prices may change over time; changes never affect an already-unlocked account.

The Protocol Explorer website, including its lessons, animations, text and design, is protected by copyright and other laws. You may not copy, redistribute or reuse the content without permission, except for normal personal learning use and brief quotation with attribution and a link to the site.

You agree not to misuse the service: no attempts to bypass the paywall or share unlock access publicly, no scraping at rates that degrade the service, no unlawful activity, and no interference with the site's operation or security.

The service is provided “as is” and “as available” without warranties of any kind, express or implied. While the lessons aim to be technically accurate, Protocol Explorer does not warrant that the content is complete, error-free or fit for any particular purpose.

To the maximum extent permitted by law, Protocol Explorer shall not be liable for any indirect, incidental or consequential damages arising from your use of, or inability to use, the service.

We may suspend or terminate access to the service for accounts that violate these terms. You may stop using the service at any time; if you have an account, you may request its deletion by contacting us.

We may update these terms from time to time. Material changes will be reflected by the “Last updated” date above. Continued use of the service after changes means you accept the updated terms.

Questions about these terms? Contact us at contact@protocolexplorer.org.