Starting Google Chrome in application mode

"The easiest way is to browse to the website in Chrome, and then follow these steps:

Click the Chrome menu button (⋮ or ☰)
Select More tools → Add to desktop...
Edit the name if you wish, and click OK

Alternatively, in earlier versions of Chrome:

Click the page menu.

Select Tools → Create application shortcuts.
In the Gears dialog box, select the checkboxes for the locations where you want shortcuts to be placed.
Click OK.

The other way is from the command line:

""path\to\chrome\chrome.exe"" --app=http://facebook.com"

"On windows with chrome 73, I can get app mode in the presence of existing chrome windows complete with extensions running like this:

chrome.exe --app=duckduckgo.com --new-window

Without --new-window, the --app argument is ignored if there is a running instance of chrome already."

"unhide ""extension for known file types"" from
File Explorer Options -> View
create .bat file
cd (your chrome.exe file)

cd C:\Program Files (x86)\Google\Chrome\Application

chrome.exe --app=www.youtube.com/watch?v=rpsI6OAwLno

here you some info about it
www.chromiumdotorg/developers/how-tos/run-chromium-with-flags

and maybe more
peter.sh/experiments/chromium-command-line-switches/

in the end there are a lot of flag you can pull, chose as you like"