cookie |
localStorage |
sessionStorage |
|
|---|---|---|---|
| Initiator | Client or server. Server can use Set-Cookie header | Client | Client |
| Expiry | Manually set | Forever | On tab close |
| Persistent across browser sessions | Depends on whether expiration is set | Yes | No |
| Sent to server with every HTTP request | Cookies are automatically being sent via Cookie header | No | No |
| Capacity (per domain) | 4kb | 5MB | 5MB |
| Accessibility | Any window | Any window | Same tab |