You would like to use a canvas element for custom ui. A canvas is a hardware accelerated 2d library (for example Skia) where you call functions to draw lines an

You would like to use a canvas element for custom ui. A canvas is a hardware accelerated 2d library (for example Skia) where you call functions to draw lines and curves. To make a decibel gauge you would have the background face image in a buffer, then only redraw the hand line on top of it for each frame.