Google says that its Chrome browser will soon block internet websites from querying and interacting with devices and servers located inside local private networks, citing security reasons and past abuse from malware operations.
There is pretty much no legitimate reason that a site from the internet should access the local network.
The only exception I’ve seen to this is Synology having a NAS finder webapp where it searches your local network for a Synology device and tells you the IP address. But that’s a tiny niche use case and there are other ways of finding it that doesn’t involve a website (the device broadcasts its identity and has a hostname FFS). Any open source IP scanner will find it instantly, or in many networks you can just type in the hostname into your browser like a domain.
There is pretty much no legitimate reason that a site from the internet should access the local network.
The only exception I’ve seen to this is Synology having a NAS finder webapp where it searches your local network for a Synology device and tells you the IP address. But that’s a tiny niche use case and there are other ways of finding it that doesn’t involve a website (the device broadcasts its identity and has a hostname FFS). Any open source IP scanner will find it instantly, or in many networks you can just type in the hostname into your browser like a domain.