These examples use the "paramfile" parameter where the browser reads a json file containing the parameters - this only works when the files are served by a webserver, not when using the file:// protocol with local files
To use these parameters files locally with file:// protocol you could launch chrome with command line option --allow-file-access-from-files (in windows: do a "⊞-r" and type "chrome.exe --allow-file-access-from-files")
Or you can use the examples that put all the parameters in the URL