Hi, thank you for your feedback. You can zoom in and out by scrolling with your mouse or by using the Ctrl + key shortcut, just like you would do on a website.
An error occurred while saving the commentBjarne Fyrstenborg commented
Yes, with scrollwheel... and with ctrl + key I can zoom in the page (but it just scale the whole webpage), it would work in my case when the publication is inside a modal (FancyBox) and it doesn't have the same effect as the scrollwheel e.g. in fullscreen mode.
Furthermore, some might want to hide the download button.
See this example http://www.oldengaard.dk/materialer/temahaefter/temahaefte-opmaerksomhed/ (click the button "Se eksempel")