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Terms and Conditions

Last updated: May 4, 2026

These Terms and Conditions ("Terms") govern your use of Kaptex — a Chrome browser extension operated by SUDESTE JONATHAN KRAAYENBRINK ("we", "our", or "the Company").

By installing or using Kaptex, you agree to these Terms. If you do not agree, please do not install or use the Service.

The short version: Kaptex is an independent tool that helps you save content to NotebookLM. It is not made by or affiliated with Google. Use it responsibly, pay for a plan if you need more capacity, and understand that some features depend on third-party platforms that can change.

1. Provider Information

SUDESTE JONATHAN KRAAYENBRINK
Registered in Poland | NIP: 5223148771 | REGON: 382442259
Email: kraayen.jon+kaptex@gmail.com

2. Description of the Service

Kaptex is a Chrome extension that saves content from supported websites and AI tools (including Claude, ChatGPT, Perplexity, YouTube, and Reddit) directly into Google NotebookLM. It also provides organisation features such as folders and tags.

Kaptex is an independent product and is not affiliated with, endorsed by, or sponsored by Google, Anthropic, OpenAI, Perplexity, Reddit, YouTube, or any other third-party platform. All trademarks and service marks belong to their respective owners.

3. Eligibility and Account Registration

  • You must be at least 16 years old to use the Service. If your country of residence requires a higher age for digital service consent, that age applies.
  • You must have a valid Google account to sign in via Google OAuth.
  • You must have an active Google NotebookLM account to use core features.
  • You are responsible for maintaining the confidentiality of your account and for all activity that occurs under it.
  • You agree to provide accurate information and to keep it up to date.
  • Notify us immediately at kraayen.jon+kaptex@gmail.com if you suspect unauthorised access to your account.

4. Subscriptions, Pricing, and Billing

4.1. Plans

Kaptex offers a free plan with daily usage limits and a paid Pro plan that removes those limits and may include additional features. A one-time lifetime payment option may also be available. Current pricing is shown on our website and within the extension.

4.2. Billing

  • All payments are processed by Stripe. We do not store credit card numbers or sensitive payment details.
  • Subscriptions renew automatically at the end of each billing period unless cancelled before the renewal date.
  • Prices shown at checkout include any applicable taxes for your jurisdiction.
  • By subscribing, you authorise us (via Stripe) to charge your payment method at each renewal.

4.3. Cancellation

You may cancel your subscription at any time from the Settings page in the extension, which links to the Stripe customer portal. Cancellation takes effect at the end of the current billing period; you retain Pro access until that date. No partial-period refunds are issued for early cancellation.

4.4. Refunds and EU Right of Withdrawal

If you are a consumer in the European Union, you have a statutory right to withdraw from a digital service contract within 14 days of purchase. By using a Pro feature during this period, you expressly request immediate provision of the digital service and acknowledge that you waive the right of withdrawal once provision has fully begun, in accordance with Article 16(m) of EU Directive 2011/83/EU.

Outside this scope, payments are generally non-refundable except as required by applicable mandatory law.

4.5. Price Changes

We may change prices for future billing periods. Active subscribers will be notified at least 30 days in advance. Continued use after the new price takes effect constitutes acceptance.

4.6. Lifetime Plans — API Dependency Disclaimer

If you purchase a lifetime plan, "lifetime" means access for as long as the Kaptex service is operational and for as long as the third-party interfaces it depends on (including Google NotebookLM's interface) continue to function in a compatible way. If those interfaces change materially or become unavailable, certain Kaptex features may stop working, and we cannot guarantee a refund solely on that basis. We will always endeavour to update Kaptex to restore functionality, but we cannot make guarantees about third-party platforms we do not control.

5. Free Plan Usage Limits

The free plan includes daily limits on actions such as adding URLs, YouTube videos, text sources, file uploads, and creating notebooks. Current limits are shown in the extension. We may adjust limits over time; material reductions to free plan allowances will be communicated in advance.

6. Acceptable Use

You agree not to:

  • Use the Service for any unlawful purpose or in violation of applicable laws
  • Save, upload, or transmit content that infringes the intellectual property, privacy, or other rights of third parties — you are responsible for ensuring you have the right to save any content you process through Kaptex
  • Violate the terms of service of any third-party platform you use with Kaptex (including Google NotebookLM, Reddit, YouTube, and the AI platforms listed in our Privacy Policy)
  • Circumvent usage limits, rate limits, or access controls
  • Attempt to gain unauthorised access to the Service, our servers, or any system Kaptex connects to
  • Interfere with or disrupt the Service or any third-party platform it interacts with
  • Use automated tools or scripts to access the Service in ways that exceed normal individual human use
  • Resell, sublicense, or redistribute the Service or your access to it without our written permission
  • Attempt to reverse engineer, decompile, or extract the source code of the Kaptex extension, except to the extent expressly permitted by applicable mandatory law

We may suspend or terminate accounts that violate these rules without prior notice.

7. Third-Party Platforms and Service Continuity

Kaptex depends on third-party platforms — primarily Google NotebookLM and the content sources listed in our Privacy Policy. Because NotebookLM does not offer a public developer API, Kaptex interacts with it through browser automation within your authenticated Google session.

You understand and accept that:

  • If a third-party platform changes, restricts access to, or removes functionality that Kaptex relies on, related Kaptex features may stop working temporarily or permanently, through no fault of ours.
  • We will endeavour to update Kaptex when such changes occur, but cannot guarantee a timeline or that all functionality can be restored.
  • You are solely responsible for complying with the terms of service of each third-party platform you use in conjunction with Kaptex.
  • We are not responsible for the availability, accuracy, content, or behaviour of any third-party platform.

8. Intellectual Property

The Kaptex extension, website, brand name, and all associated materials are owned by SUDESTE JONATHAN KRAAYENBRINK and protected by applicable intellectual property laws. We grant you a limited, non-exclusive, non-transferable, revocable licence to install and use the Service in accordance with these Terms and the terms of the Chrome Web Store from which you obtained it.

You retain all rights to any content you save or process through Kaptex. We do not claim ownership of your content.

If you provide us with feedback or suggestions about the Service, we may use that feedback without compensation to you, unless applicable law requires otherwise.

9. Privacy

Your use of the Service is also governed by our Privacy Policy, which is incorporated into these Terms by reference. The Privacy Policy describes what personal data we collect, how we use it, and your rights under GDPR and other applicable laws.

10. Service Availability and Changes

  • We aim to keep the Service available and reliable but do not guarantee uninterrupted operation.
  • We may add, modify, or remove features at any time.
  • We may perform scheduled or emergency maintenance that temporarily affects availability.
  • We are not liable for downtime or feature loss caused by third-party platforms.

11. Disclaimers

The Service is provided "as is" and "as available" without warranties of any kind — express or implied — including warranties of merchantability, fitness for a particular purpose, or non-infringement, except to the extent that such warranties cannot be excluded under the mandatory laws of your jurisdiction.

We do not guarantee that:

  • The Service will be error-free or uninterrupted
  • Content you save will always transfer successfully to NotebookLM
  • The Service will remain compatible with future versions of third-party platforms

12. Limitation of Liability

To the maximum extent permitted by applicable law, SUDESTE JONATHAN KRAAYENBRINK shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including loss of profits, data, use, goodwill, or other intangible losses, arising out of or related to your use of or inability to use the Service.

Our total aggregate liability for any claim arising out of or relating to the Service shall not exceed the greater of:

  • The total amount you paid us in the twelve (12) months preceding the event giving rise to the claim, or
  • EUR 50

Nothing in these Terms limits or excludes liability that cannot be limited or excluded under applicable law, including liability for gross negligence, intentional misconduct, or — for EU consumers — mandatory statutory consumer rights.

13. Indemnity

You agree to indemnify and hold harmless SUDESTE JONATHAN KRAAYENBRINK from any third-party claims, damages, liabilities, and expenses (including reasonable legal fees) arising out of your violation of these Terms, your misuse of the Service, or your infringement of any third-party rights.

14. Termination

  • You may stop using the Service and uninstall the extension at any time.
  • You may delete your account by emailing kraayen.jon+kaptex@gmail.com.
  • We may suspend or terminate your account if you violate these Terms or engage in conduct that could reasonably harm us, other users, or third parties.
  • Upon termination, your right to use the Service ends immediately. Sections that by their nature should survive termination — including Intellectual Property, Disclaimers, Limitation of Liability, Indemnity, and Governing Law — remain in effect.

15. Changes to These Terms

We may update these Terms from time to time. Material changes will be communicated via the extension or by email at least 30 days before taking effect. Continued use of the Service after the effective date of updated Terms constitutes acceptance of the changes.

16. Governing Law and Jurisdiction

These Terms are governed by the laws of Poland, without regard to its conflict of laws rules.

Disputes shall be submitted to the competent courts of Poland, except where the mandatory consumer protection laws of your country of residence give you the right to bring proceedings in your local courts.

EU consumers may also use the European Commission's Online Dispute Resolution platform: https://ec.europa.eu/consumers/odr

17. Miscellaneous

  • If any provision of these Terms is found to be unenforceable, the remaining provisions remain in full effect.
  • Our failure to enforce any provision is not a waiver of our right to do so later.
  • You may not assign or transfer your rights or obligations under these Terms. We may assign these Terms to an affiliate or in connection with a merger, acquisition, or sale of assets, with notice to you.
  • These Terms, together with the Privacy Policy, constitute the entire agreement between you and us regarding the Service and supersede any prior agreements.

18. Contact

For any questions about these Terms:

Email: kraayen.jon+kaptex@gmail.com