Is this app Icon Browser Safe/Legit?

Solution 1:

I found it! It's an application called "Yad". As this is in the repositories, it has been checked by the good people at canonical and can probably be trusted.

Solution 2:

There is an "Icon Browser" GUI utility (gtk3-icon-browser) comes from the gtk-3-examples package. If you have the same thing, then it should be fine.

To check it, first run the following command to find out whether gtk-3-examples is installed:

apt policy gtk-3-examples

If it's installed, run

gtk3-icon-browser

to launch the application. Associated .desktop launcher, viz. gtk3-icon-browser.desktop should be found in the /usr/share/applications/ directory.