Visualizer data transfer mode

I think the ParaviewWeb project transmits images in compression mode only by setting JPEG quality. I found Visualizer use vtkLZ4compressor, but I didn’t find it in code, perhaps because of my bad code level, I want to reference the code implementation, for the purpose of my own ParaviewWeb project, Does this approach have any advantages over JPEG compression?
Thank you advance!

This would be in distributed mode (mpi) where the image is sent to process 0 and only apply on the server side, not the web client to server. Based on what you are saying, I would guess that none of that setting apply to your setup.