v133 · offline / storage
Partition Key Explorer
Storage partitioning keys storage by (top-level site, embedded origin). This tool computes the partition key for any combination of top-level page and embedded frame, then shows a table of scenarios where the key matches — and where it doesn't.
Storage partitioning: Chrome 115+ ✓
checking StorageManager…
Partition key formula
partition_key = (top-level site, is-cross-site)
Storage accessed from an embedded origin is namespaced by the top-level site.
Same origin, different top-level site → different bucket.
Storage accessed from an embedded origin is namespaced by the top-level site.
Same origin, different top-level site → different bucket.
Scenario matrix: when does storage stay isolated?
Green rows share a partition key (same storage bucket). Yellow rows have different keys (isolated buckets). Hover for tooltip.
| Top-level site | Embedded origin | Context | Same bucket as row 1? |
|---|
Live storage probe (this page)
Shows the partition of this page's own storage bucket.
loading…