Shared pages will support most Confluence formatting. The following macros are not supported when used on shared pages
Page Tree macro
For security reasons the "Page Tree" macro is not supported in shared pages, use the macro "Children display" instead.
Page Gadget macro
For security reasons the "Page Gadget" macro is not supported in shared pages, use the macro "Include page" instead.
To display images in shared pages using the "Chart" macro, you have to configure the macro to generate the chart as an attachment in the original page. To do so, just include the parameter "Attachment", per the following image:
Then, the shared pages will display the charts as normal shared images: