If this is useful, a ❤️ helps others find it. All tests run on an 8-year-old MacBook Air. HiyokoHelper is a 360×440px floating window. Always accessible, never in the way. Cmd+Shift+H brings it to the front from any app. Window configuration { "app" : { "windows" : [{ "label" : "main" , "width" : 360 , "height" : 440 , "resizable" : false , "decorations" : false , "alwaysOnTop" : true , "transparent" : true , "visible" : false }], "macOS" : { "activationPolicy" : "accessory" } } } decorations: f