Hi Gabriel,
if you need the visualisation of the timeline, I would suggest you export as Image: Export > Image > PDF Vector Image
If you need in the html the gantt around the current date, you may export the html after using a filter or date range limitation around the current date.
So if you limit the date range in Merlin Project
And export as html, you get only the visible 17 entries
Or you set a filter, for example this month
And get the same filtered activities in the html
I hope this helps you further.