This is an application example showing how to use the pgn4web file collection.html to manage a collection of PGN files.
Two alternative options are shown.

links to the viewer

A link can be listed for online viewing each PGN file in a new browser window:

dropdown menu selection

The selecetd PGN file from a dropdown menu is shown in the inline frame underneath:

Select a PGN archive from the collection 2008 World Championship: Anand Kramnik The Week In Chess #765 London Chess Classic 2009 round 5 Tilburg Fontys 1998 round 2