Sending binary data from liveview to the JS client

Hello,
I want to regularly send some encoded binary data(base64) from LiveView to the client, I found that push_event can’t do that since Jason encodes only in UTF8 and I don’t want to use channels(why should I add the overload of at least one another process per user for just sending some data !!) so is there any efficient way to do that ?
Thank you.