Cookie Policy

Effective Date: Feb 15, 2025

1. Introduction

Thumbnail Grabber ("we", "our", or "us") uses cookies and similar tracking technologies on our website. This Cookie Policy explains what cookies are, how we use them, and your choices regarding their use.

By continuing to use Thumbnail Grabber, you consent to our use of cookies as described in this policy. If you do not agree, please adjust your browser settings or discontinue use.

2. What Are Cookies?

Cookies are small text files that are placed on your device (computer, smartphone, or tablet) when you visit a website. They are widely used to make websites work more efficiently and provide information to website owners.

Similar technologies include web beacons, pixels, local storage, and other tracking technologies. Throughout this policy, we refer to all of these technologies collectively as "cookies."

3. Types of Cookies We Use

Essential Cookies

These cookies are necessary for the website to function properly. They enable core functionality such as security, authentication, and accessibility. You cannot opt-out of these cookies.

  • Session cookies: Maintain your session state
  • Authentication cookies: Keep you signed in
  • Security cookies: Protect against CSRF attacks
  • Load balancing cookies: Distribute traffic across servers

Functional Cookies

These cookies enable enhanced functionality and personalization, making your experience smoother.

  • Language preference: Remember your selected language (English/中文)
  • Theme preference: Save your light/dark mode choice
  • Feature preferences: Remember your tool-specific settings

Analytics and Performance Cookies

These cookies help us understand how visitors use Thumbnail Grabber, enabling us to improve our tools and user experience.

  • Google Analytics: Track page views, user journeys, and feature usage
  • PostHog: Analyze user behavior and product performance
  • Microsoft Clarity: Session recordings and heatmaps for UX improvement
  • Performance monitoring: Identify slow loading times and errors

Marketing and Advertising Cookies (Optional)

We may use these cookies in the future to understand which features attract users and improve our service.

  • Campaign tracking: Measure effectiveness of promotional campaigns
  • Social media: Enable sharing features and track referrals

Note: We do not currently use advertising cookies for third-party ads.

4. Specific Cookies We Use

Here are the main cookies we use and their purposes:

Cookie NamePurposeDurationType
better-auth.session_tokenUser authentication and login session30 daysEssential
csrf-tokenSecurity - prevent CSRF attacksSessionEssential
themeRemember dark/light mode preference1 yearFunctional
NEXT_LOCALELanguage preference (en/zh)1 yearFunctional
_ga, _gid, _ga_*Google Analytics - usage tracking2 years / 24 hoursAnalytics
ph_*PostHog analytics and feature flags1 yearAnalytics
_clck, _clskMicrosoft Clarity - session tracking1 year / SessionAnalytics

5. Third-Party Cookies

We may use third-party services that set their own cookies. These services help us operate and improve Thumbnail Grabber:

  • Google (YouTube Data API): Fetch thumbnails, tags, and profile images from YouTube
  • Google OAuth: Enable sign-in with Google (optional)
  • Google Analytics: Track site usage and performance metrics
  • PostHog: Product analytics and feature usage tracking
  • Microsoft Clarity: Session recordings and user behavior analysis
  • Creem: Payment processing (if you use premium features)
  • Resend: Email delivery service for notifications

These third parties have their own privacy policies. We recommend reviewing them:

6. Your Cookie Choices

Browser Settings

Most web browsers allow you to control cookies through their settings. You can:

  • View what cookies are stored on your device
  • Delete cookies individually or entirely
  • Block third-party cookies
  • Block all cookies from specific websites
  • Block all cookies entirely
  • Set preferences for specific websites

Cookie Management Instructions

Here are links to cookie management instructions for popular browsers:

  • Chrome: Settings → Privacy and security → Cookies
  • Firefox: Settings → Privacy & Security → Cookies
  • Safari: Preferences → Privacy → Cookies
  • Edge: Settings → Privacy, search, and services → Cookies
  • Opera: Settings → Advanced → Privacy & security → Cookies

Opt-Out Options

You can opt-out of specific types of cookies:

Do Not Track

Some browsers offer a "Do Not Track" (DNT) setting. We currently do not respond to DNT signals, but we respect your cookie choices as described above.

7. Impact of Disabling Cookies

Please note that if you choose to block or delete cookies:

  • Some parts of our website may not function properly
  • You may not be able to access certain features
  • You may need to re-enter information more frequently
  • Your preferences may not be saved
  • You may need to manually adjust settings each visit

8. Cookie Policy for Mobile Apps

If we offer mobile applications, they may use similar tracking technologies. Mobile platforms provide device-level settings to control these technologies. Please refer to your device manufacturer's instructions.

9. Updates to This Cookie Policy

We may update this Cookie Policy from time to time to reflect changes in our practices or for legal, operational, or regulatory reasons. We will post any changes on this page with an updated effective date.

We encourage you to review this Cookie Policy periodically to stay informed about our use of cookies.

10. Contact Us

If you have any questions about our use of cookies or this Cookie Policy, please contact us:

  • Email: support@thumbnailgrabber.app
  • Website: https://thumbnailgrabber.app

Note: Most of our core YouTube download tools work without requiring cookies or login. Cookies are primarily used to enhance your experience with language preferences, theme settings, and optional analytics.

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