Recently I did a speech regarding a software tool I'm coding and I used balsamiq as main tool to make my presentation slides.
I admit balsamiq is not the tool usually we think about when we want to make presentations (of a source code!)
but i like so much the balsamiq mokup style and I insisted to use it.
BTW, for the presentation event I mentioned (chatbot meetp Milano), the organizers requiremet was to deliver a PDF file in a 16:9 aspect ratio format.
Here I had problems: balsamiq (v.3.5.5) is not perfect to produce PDF files with one-click procedure.
Please see details in previous post here in this forum:
Anyway, I got pretty good results with this workaround:
I "enclosed" any mockup page with a transparent background rectangle with 1:9 aspect ratio: by example: if all objects in a page fit a rectangle with dimensions: 1572x891, I enclosed all with a rectagle with dimensions: 1600x900.
In that way, the Balsamiq one-click PDF export feature, behave almost well, but imperfect in case the pixel dimensions are yes 16:9 but with a different scale... by example if the slides contains a mix of very different pixels rectangles (still 16:9); the export function "stretch" the lowest rectagle with an alias "defocused" awful/confusing effect.
Better and final solution:
I exported mockups one by one as PNGs (almost 40 pages).
I elaborated stretched with a bitmap program (Freestone Imageviewer) reducing a bit the defocus and achiving a single uniform 1600x900 constant size for any page. Eventually I created the PDF using something like "print as PDF" using (Windows10) standard OS way. In that way final "resolution" in PDF file is ok.
So I propose to Balsamiq core to add some embedded facilities/function with the aim to produce high quality PFDF files in 4:3 / 16:9 format. Just a suggestion.
Anyway I love Balsamiq and maybe my slides are a good (alternative) example of usage of this great tool!