possible, many years ago when I need this, I use Google search to solve my problems.
for lightroom, there is a plugin to do this, but you need to pay for it.
if you want to use photoshop, you need to write a script to do that, if you can't write, either you pay someone to write for you,
or search an existing script from the net, than write an action to put the script into the action, using action to format the font size, position, color in the image before save a jpg copy.
alternativitly, you can download a image viewer freeware call faststone, the function is already built in.
hope this help.
.......and this thread belongs to digital darkroom, not General Photography Talk.
thread moved.