Limited Availability

Local network access

The "local-network-access" user permission (and certain actions that imply this permission, such as a fetch() request with { targetAddressSpace: "local" }) allows a site to send requests to servers on a user's local network.

Baseline Status: This feature is currently Limited (not yet Baseline). Latest engine implementation shipped on Feb 14, 2026.

Desktop Browser Engine Support

Google Chrome

145

Supported

Mozilla Firefox

—

Unsupported

Apple Safari

—

Unsupported

Microsoft Edge

145

Supported

Mobile Browser Engine Support

Chrome Android

145

Firefox Android

—

Safari iOS

—

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

api.Permissions.permission_local-network ↗ api.Permissions.permission_local-network-access ↗ api.Request.Request.options_parameter.targetAddressSpace ↗ api.fetch.options_parameter.targetAddressSpace ↗ http.headers.Permissions-Policy.local-network ↗ http.headers.Permissions-Policy.local-network-access ↗