Tiny Help Page Fonts with hidpi monitor

After scaling up the main interface, Matlab is usable on 4K display now. But the inbuilt web browser still shows very tiny, unreadable fonts, including all build logs, compilation reports and help pages. Is there a way to increase the scaling?

[Erich]

With the help browser active, use the keyboard shortcuts Ctrl + and Ctrl - to increase and descrease the size of the contents.

[Alexander Wang]

Thanks a lot! It helps. Didn't notice that it is also stated in the font settings.