Extract links from offline html files.

I have projects that require extracting links from local html files and haven't found an application that does all that I need. For example, I have a folder with an offline website, meaning the local html pages open in a browser and the page elements all point to local files to accurately render the page as if the site was online. I am simply looking to be able to open an html file from a folder into a browser, extract all the html and pdf links on that page, write the contents to a txt or csv file, then open the next page in the folder, extract the links (html and pdf) from that page and write those links to the same txt or csv file. This needs to be done with all the html files in the folders and sub-folders. I am not looking to follow any links or navigate the page, only extract the links. I have read about headless browsers, python, beautifulsoup etc. being able to do this. I am not however a programmer. There are also browser extensions, like linkKlipper that will do this one page at a time which works and is tedious for many pages. This is for in-house projects, I am not looking to market it.