Is It Possible to Set Transparency per Window in Ubuntu 20.04?

From the Command Line

Ubuntu 20.04 should ship with a command line tool called transset which provides some useful options for setting the transparency of a window.

In my opinion, the options that work best for quickly changing a window's transparency level are the -p flag (which targets the window under the cursor) and the --inc/--dec flags (which respectively increase and decrease the transparency value by a given amount).

Note that the transparency value is a decimal value between 0 and 1.

To make the window more transparent:

$ transset -p --dec 0.05

To make the window more opaque:

$ transset -p --inc 0.05