Hey Mr. Beer-
Thanks for the feedback. I can think of a couple of solutions that might help.
For zooming, there are two ways to accomplish this when using the eZymurgy digital edition interface on a desktop or laptop. In the default view (a.k.a Page View), you can do what Bucknut suggested and double click a page. This will bring up a '+' and "-" button in the lower right hand corner. You can click the plus sign 2 more times to further zoom.
The better option for bigger text is to hit the "Menu" option on the top left corner and select "Contents View." This will give you plain text version of the articles. Select the article you want to read by clicking on it and then you can adjust the font size by clicking the "Size" option on the top right corner. It has two levels of zoom.
In Contents View, you can even go bigger than the maximum font size of the viewer by using Safari's or Chrome's native zoom feature. I don't know the shortcut to do this in Safari (maybe a Mac person can chime in), but in Chrome, you can use Ctrl+ ("control plus") to zoom in and Ctrl- ("control minus") to zoom out. Alternatively, hold control and use the mouse wheel to zoom in and out.
For mobile access, we recommend downloading the Zymurgy App (in Apple and Google app stores) since eZymurgy (the browser-based digital edition) was not designed specifically for smart phone or tablet.
I will also check with our Creative department to see if any adjustments can be made at the printer, which is who hosts the digital editions.
Thanks again for the feedback and I hope this helps!