open with... button on menu

[pedalracer]

Hi
is there a trick to display a button on menu bar for external programms I open with 'open with...'?

Eg. I like to have a button for Riot in order to batch optimize images.

[user0]

settings > interface > toolbar tab
add -- COMMAND --

another option - via context menu
right-click on image > open with > configure programs...