Cookie Policy
Last updated: 10/24/2025
Essential cookies: Supabase authentication (required for login)
Functional cookies: Sidebar state, theme preferences (improves your experience)
Analytics cookies: PostHog & Sentry (help us improve the service)
Your control: You can disable non-essential cookies in your browser settings
localStorage: We also use browser storage for theme and video URL preferences
Contact us: privacy@questly.com for cookie-related questions
1. What Are Cookies?
Cookies are small text files that are stored on your device when you visit our website. They help us provide you with a better experience by remembering your preferences and enabling certain functionality.
This Cookie Policy explains how Questly Kft. ("we", "us", or "our") uses cookies and similar technologies on our YouTube video summarization service.
2. Types of Cookies We Use
Essential Cookies
These cookies are necessary for the website to function properly. They cannot be disabled and are set automatically in response to your actions.
Purpose: Authentication, security, and basic website functionality
Examples: Session cookies, authentication tokens, CSRF protection
Duration: Session-based or up to 24 hours
Functional Cookies
These cookies enable enhanced functionality and personalization, such as remembering your language preferences and theme settings.
Purpose: User preferences, language settings, theme preferences
Examples: Language selection, dark/light mode preference
Duration: Up to 1 year
Analytics Cookies
These cookies help us understand how visitors interact with our website by collecting and reporting information anonymously.
Purpose: Website analytics, performance monitoring, error tracking
Examples: PostHog analytics, Sentry error tracking
Duration: Up to 2 years
Third-Party Cookies
These cookies are set by third-party services that we use to enhance our website's functionality and user experience.
Purpose: Authentication, analytics, error tracking
Examples: Supabase (authentication), PostHog (analytics), Sentry (error tracking)
Duration: Varies by service provider
3. Specific Cookies We Use
| Cookie Name | Purpose | Type | Duration |
|---|---|---|---|
| sb-* | Supabase authentication | Essential | 1 year |
| sidebar_state | Sidebar open/closed state | Functional | 7 days |
| ph_* | PostHog analytics | Analytics | 2 years |
| sentry_* | Sentry error tracking | Analytics | 1 year |
4. Local Storage vs Cookies
In addition to cookies, our website also uses browser local storage for certain preferences:
- Theme Preference: Stored in localStorage to remember your dark/light mode choice
- Video URL: Stored in localStorage to remember your last entered YouTube URL
- Language Preference: Managed through Next.js internationalization
Unlike cookies, localStorage data is not sent to our servers automatically and is only accessible to our website. You can clear localStorage data through your browser's developer tools or privacy settings.
5. Your Cookie Choices
You have several options for managing cookies:
- Browser Settings: Most browsers allow you to refuse or delete cookies through their settings
- Cookie Banner: When you first visit our site, you can choose which cookies to accept
- Opt-out Links: You can opt out of analytics cookies using the links in our privacy policy
Important Note:
Disabling essential cookies may affect the functionality of our website and prevent you from using certain features.
6. Third-Party Services
Our website integrates with several third-party services that may set their own cookies:
- Supabase: Authentication and database service cookies
- PostHog: Analytics and user behavior tracking
- Sentry: Error monitoring and performance tracking
- Stripe: Payment processing (server-side only, no client cookies)
These services have their own privacy policies and cookie practices. We recommend reviewing their policies:
7. GDPR Compliance
We are committed to complying with the General Data Protection Regulation (GDPR) and other applicable privacy laws. Our cookie practices include:
- Clear information about cookie usage and purposes
- Granular consent options for different cookie categories
- Easy withdrawal of consent at any time
- Minimal data collection and processing
- Regular review and updates of our cookie practices
You have the right to:
- Access information about cookies we use
- Withdraw consent for non-essential cookies
- Request deletion of cookie data
- Object to certain types of cookie processing
8. Cookie Retention
We retain cookie data for different periods depending on the type of cookie:
- Session Cookies: Deleted when you close your browser
- Persistent Cookies: Retained for the duration specified in the cookie
- Analytics Cookies: Typically retained for up to 2 years
- Functional Cookies: Retained for up to 1 year or until you change preferences
9. Updates to This Policy
We may update this Cookie Policy from time to time to reflect changes in our practices or for other operational, legal, or regulatory reasons. We will notify you of any material changes by:
- Posting the updated policy on our website
- Sending you an email notification (if you have an account with us)
- Displaying a notice on our website
We encourage you to review this policy periodically to stay informed about our cookie practices.
10. Contact Information
If you have any questions about this Cookie Policy or our cookie practices, please contact us:
Company: Questly Kft.
Address: 1065 Budapest, Révay utca 6. Fsz. 7. ajtó
Email: privacy@questly.com
Data Protection Officer: dpo@questly.com
By continuing to use our website, you acknowledge that you have read and understood this Cookie Policy and consent to our use of cookies as described herein.