A few plugins will allow you to use ArmCord/Discord Web to its fullest potential.
Let's you change screenshare quality in ArmCord/Discord Web.
https://armcord.github.io/shelter-plugins/screenshareQualityFix/
Links built-in ArmCord arRPC with Discord.
https://armcord.github.io/shelter-plugins/armcordRPC/
A bridge between ArmCord and Discord UI
https://armcord.github.io/shelter-plugins/armcordSettings/