Easy way to save to pdf instead of preview?

Right now when :MarkdownPreview, it opens up a webpage in localhost, and removes it when I switch buffers in Vim. What I would really like is to have several different .md files open in my browser at the same time. Could there be some support such that we can do

:MarkdownSave filename.pdf or bind the .md file to some name filename.pdf (maybe the file we are editing is filename.md) so that when we do :w, it is saved immediately?

For example, we're editing file eg.txt We do MarkdownSave and it saves and opens up a pdf file saved on your working directory. we make changes and we get the updated file immediately?