Enabling Image and PDF Downloads

By enabling this options, you make it possible for all users to download visuals as *.png or *.pdf files.

Developer Note. To enable PDF printing, you must enable the EPEL repository, and install the packages chromium-headless, google-noto-sans-fonts, and google-noto-serif-fonts. Use the following command:
> yum install epel-release
> yum install chromium-headless google-noto-sans-fonts google-noto-serif-fonts

In Site Settings, under Snapshots, select the option Enable "Download as Image/PDF" by default.

enable simage/pdf downloads by default