Cookie Policy
Last updated: November 2026
1. What are cookies?
Cookies are small text files stored on your device when you visit a website. They help the site remember your preferences and understand how you use it.
2. Cookies we use
| Cookie | Purpose | Duration |
|---|---|---|
| next-auth.session-token | Keeps you logged in | 30 days |
| next-auth.csrf-token | Security - prevents cross-site request forgery | Session |
| next-auth.callback-url | Redirects you after login | Session |
3. Essential cookies only
We only use cookies that are strictly necessary for the platform to function. We do not use advertising cookies, tracking cookies, or third-party analytics cookies.
We do measure how the service is used. Usage events from the website and the app are sent to our own servers, which pass them to PostHog, our analytics provider, which stores them in the EU. This sets no cookies and stores nothing on your device. When you create an account, we link the usage events from your visit before sign-up to that account.
4. Local storage
We use browser local storage to remember UI preferences (e.g. whether you have seen the swipe onboarding tooltip). This data stays on your device and is not sent to our servers.
5. Managing cookies
You can clear cookies through your browser settings. Note that clearing the session cookie will log you out. Since we only use essential cookies, there is no cookie consent banner - these cookies are required for the service to work.
6. Contact
Questions about our cookie usage? Email contact@tradeslides.co.uk.