This one needs the extension
The scanner asks every address on your subnet for its device info and reads back the model, serial and firmware. A web page is not allowed to do that — three separate browser protections stop it, and none of them can be worked around from a website:
- Mixed content. This page is served over HTTPS, and an
HTTPS page may not talk to
http://192.168.x.xat all. - CORS. Your camera does not send the header that would let a web page read its reply, so even over plain HTTP the answer is unreadable.
- Private Network Access. Chrome blocks requests from a public site to a private address regardless of the two above.
The extension is exempt because you grant it local-network permission explicitly at install time. A website has no equivalent, and a page that merely pinged each address could tell you something answered but never what it was — which is the entire point.
Everything else works here
Chipset lookup, MSRP pricing and the field-of-view tool are all on this site — no install, and they work on a phone.