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Storage Partitioning

Tracking

Third‑Party Tracking First‑Party Isolation Cookie Partitioning Local Storage

Separating browser storage by site to reduce tracking.

Definition

Storage partitioning means the browser separates stored data (like cookies and local storage) by website.

In plain English Separating browser storage by site to reduce tracking.

Why this matters

Why it matters: It makes it harder for trackers to follow you across different sites.

Example

Example: A third‑party script can’t see the same stored ID on every website.