code display on all pages no filter juste for 1 or 2 pages

Hello a good plugin, but there is no filter to display on only some page, in my case on cart and checkout page,

So code is display on all pages, that makes lose time of time loading of all pages for nothing, you are going to make an update to display the code only on certain pages? or the code for that would increase more the time of loading of the pages than the snippets in themselves?