I learned of Print Friendly from OSR blogs a few years ago. A lot of OSR bloggers have it on every article on their blog. I need to look into that. You can also add a script to the tool bar of your browser as a bookmark and you can use it. I also use it to record information for work, which is totally unrelated to RPGs, except maybe “Papers and Paychecks”, LOL. 🙂
This tool allows you to make a PDF with links and the URL of the page you found the information. The PDF can be saved to your PC or emailed to yourself.
The links in the PDFs are clickable and it is searchable text, not just an image.
This is much easier than saving HTML files for later.
Just follow the instructions on the Print Friendly page to get it working for you.