Authentication cookie
When you sign in, Phoenix stores a cookie named phoenix_session. It is HttpOnly, scoped to the site, and used to keep your account session active. Without it, protected workspace pages cannot work.
Workspace preference
Phoenix stores the sidebar collapse preference in your browser's local storage under phoenix.sidebarCollapsed. This preference does not contain account content or credentials.
Third-party resources
The public interface loads fonts from Google Fonts. Connected providers such as TikTok, AI services, search services, hosting, and storage may have their own cookies and privacy practices when you visit or authorize them.
Your choices
You can clear site cookies and local storage through your browser settings. Clearing the authentication cookie signs you out; clearing the sidebar preference restores the default responsive layout.