Another option is to inject the script: A. At onDOMContentLoaded and B. Inside a setTimeout(func, 0) block Then the browser's loading indicator will stop befo

Another option is to inject the script: A. At onDOMContentLoaded and B. Inside a setTimeout(func, 0) block Then the browser's loading indicator will stop before the script has been loaded, executed and all its assets loaded. Useful for social media widgets, etc.