Web features explorer

Local network access

Limited availability

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.

Browser support

  • Chrome 145 Released on 2026-02-10
  • Chrome Android 145 Released on 2026-02-10
  • Edge 145 Released on 2026-02-14
  • Firefox Not supported Bugs: 1481298
  • Firefox for Android Not supported
  • Safari Not supported
  • Safari on iOS Not supported
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MDN documentation

Specifications

Web Platform Tests (WPT)

View the latest WPT test results for this feature

Developer use cases

  • I'd like to be able to continue to use my GitLab self-hosted Web IDE which seems to be broken after having changed its DNS record to point to an internal IP. The message I receive is `Permissions Policy: Skipping unsupported feature name “local-network-access”.`, which led me to discussions on the topic that revealed that this is due to Firefox blocking communications from an iframe back to my origin. Would appreciate this feature being added. I'd like to be able to continue to use my GitLab self-hosted Web IDE which seems to be broken after having changed its DNS record to point to an internal IP. The message I receive is `Permissions Policy: Skipping unsupported feature name “local-network-access”.`, which led me to discussions on the topic that revealed that this is due to Firefox blocking communications from an iframe back to my origin. Would appreciate this feature being added. [see original comment]

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