Ad mockup generator

Assembles a mockup of a complete ad unit from your image and copy, so you can see it as a whole rather than as separate assets in separate files.

The reason to mock up rather than review assets separately is that ads fail at the joins. An image that works alone competes with a headline that also works alone; a call to action lands on the busiest part of the picture; the brand name is the third-most-prominent thing when it should be the second. None of that is visible in a folder of files. It is also the quickest way to catch the most common problem in ad creative, which is simply too much: two messages fighting for the same second of attention, where one clear one would land.