Cookie Policy
Last updated: March 21, 2026
1. What Are Cookies
Cookies are small text files stored on your device when you visit a website. They are widely used to make websites work efficiently and provide information to site owners.
2. How We Use Cookies
Wudi uses a minimal set of cookies, strictly limited to what is necessary for the Service to function. We do not use cookies for advertising, tracking across websites, or profiling.
2.1 Essential Cookies (Strictly Necessary)
These cookies are required for the Service to work and cannot be disabled:
| Cookie | Purpose | Duration |
|---|---|---|
sb-*-auth-token | Supabase authentication session — keeps you logged in securely | Session / 7 days |
sb-*-auth-token-code-verifier | PKCE code verifier for OAuth security | Session |
2.2 Functional Preferences (localStorage)
We use browser localStorage (not cookies) to remember your preferences:
| Key | Purpose |
|---|---|
wudi-theme | Your light/dark mode preference |
wudi-locale | Your language preference (English/Chinese) |
localStorage data never leaves your browser and is not sent to our servers.
3. Third-Party Cookies
We do not use any third-party analytics, advertising, or tracking cookies. The only third-party services that may set cookies are:
- Stripe — may set cookies during the payment checkout process for fraud prevention. See Stripe's cookie policy.
- Google OAuth — during the sign-in flow, Google may set its own cookies. See Google's cookie policy.
4. Managing Cookies
You can control and delete cookies through your browser settings. However, disabling essential cookies will prevent you from logging in and using the Service. Most browsers allow you to:
- View what cookies are stored
- Delete individual or all cookies
- Block cookies from specific or all sites
- Set preferences for first-party vs. third-party cookies
5. Do Not Track
We honor Do Not Track (DNT) browser signals. Since we do not use tracking cookies or third-party analytics, your experience is the same regardless of your DNT setting.
6. Updates
We may update this Cookie Policy if we introduce new features that require additional cookies. We will notify you of any material changes.
7. Contact
Questions about our cookie practices? Email us at privacy@wudi.in.