Web Storage (localStorage, sessionStorage, cookies)

The key difference is that cookies are sent with every HTTP request while Web Storage is not: 1) Cookies are automatically included in HTTP headers for every request to their domain, 2) Web Storage data stays client-side and never gets automatically transmitted, 3) This makes cookies suitable for server-side session management, 4) Web Storage is more efficient for storing larger amounts of client-only data, 5) Cookies have a much smaller size limit (typically 4KB) compared to Web Storage, 6) Cookies can have expiration dates and security flags (Secure, HttpOnly), 7) Web Storage provides a larger storage capacity and better performance for client-side data, 8) Understanding these differences is crucial for choosing the right storage mechanism.