I use SANE for scanning.
- install
sane-utils - configure
/etc/sane.d/saned.conf, list the IP adresses or network allowed to connect - start
saned.socket
on your client (linux desktop)
- add the SANE server IP to to the config
echo “192.168.xx.xx” > /etc/sane.d/net.conf - list the scanners
scanimage -L
The scanner is also automatically listed in scanning utilities like simple-scan etc. Don’t know about phones or other devices, I assume there are scanner auto-discovery utilities; phones also have cameras so thy can scan on their own. I don’t know about Web UIs, why not just use native printing/scanning features of guest devices?