Cookie Policy

Overview

IndexTTS2 is Bilibili's industrial-grade AI voice cloning platform. Our browser-based demo and subscription features rely on a small set of cookies and similar technologies to keep your account secure, remember the way you use the site, and understand product performance. This Cookie Policy explains which technologies we use, why we use them, and how you can control them.

Types of cookies we use

Essential cookies

• session: keeps authenticated sessions for IndexTTS2 dashboard users and protects access to voice cloning tools.
• locale and similar language cookies: remember the language you choose so the site automatically opens in English or Chinese.
• Security cookies: Cloudflare and other protective services set short-lived tokens to prevent abuse of the free demo and block malicious traffic.

Functional cookies and local storage

• Demo preferences: we store the last voice, language, and playback settings you pick in the IndexTTS2 demo so you can continue experimenting without reconfiguring every visit.
• Interface settings: theme, mode, and layout selections are saved locally to deliver a consistent experience across sessions.
• Support interactions: if you start a conversation or submit a form, we retain the information you share so we can respond.

Performance and analytics cookies

• Seline Analytics (active only in production when a token is provided) uses first-party cookies to understand how visitors explore the landing page and to guide product improvements. The data is aggregated and not used to profile individual visitors.
• Internal monitoring cookies measure demo reliability, rendering speed, and error rates so we can keep the zero-shot voice cloning service fast and stable.

Third-party cookies

• Stripe may set cookies when you open checkout links or the billing portal to verify your identity and complete payments securely.
• Hugging Face/Gradio powers the embedded live demo at indexteam-indextts-2-demo.hf.space and may store session cookies to process text and audio inputs, remember microphone permissions, and prevent abuse.
• If you interact with social embeds, videos, or other partner content, those providers may place cookies according to their own policies.

Managing cookies

You can control cookies by adjusting your browser settings. Most browsers let you delete existing cookies, block third-party cookies, or set prompts before a new cookie is stored. Disabling essential cookies may limit access to secure areas such as your account dashboard or prevent the demo from functioning correctly. Opting out of analytics cookies will not affect core functionality but may impact our ability to improve IndexTTS2.

To clear demo preferences saved in local storage, remove cached data for this website in your browser.

Updates

We will update this policy if we introduce new features, integrate additional partners, or change the way cookies are used. The "date" field above reflects the latest revision. When material changes occur, we will make them visible on this page.

Contact

If you have questions about cookies or data privacy at IndexTTS2, please contact us.