SameSite cookie demo
Site B

Try out the demo

1. Navigate to samesite-a.glitch.me in Chrome.
2. Open the Chrome DevTools Application panel.
3. From the Cookie pane, you will see two cookies: one for the navigation, and one for the image from samesite-b.glitch.me. The image cookie is blocked because the default SameSite value of Lax only allows cross-site cookies to be set in response to a navigation.

4. Navigate to samesite-b.glitch.me. Again, the image cookie is blocked.

5. Navigate back to samesite-a.glitch.me. The two navigation cookies are stored, but the image cookie is blocked again, and image cookies have not been stored from previous page visits.