Solved by ludwigwinkler in post #2 
              
              
                I wrote a function which directly exports the data from the SummaryWriter. 
In case somebody stumbles over it. 
def export_jsondump(writer):

	assert isinstance(writer, torch.utils.tensorboard.SummaryWriter)

	tf_files = [] # -> list of paths from writer.log_dir to all files in that directory
	for r…