Does this simply remove the JavaScript or do something more clever? Because I think in the age of SPAs, the proper way to save "content pages" might be to execute the JavaScript once and serialize the resulting DOM back to HTML. I didn't find anything in the FAQ that explains if it does something like that.
It saves what you see (and remove JS by default). There is an option to embed the JS and another one to save the "raw" page but I would not say it is reliable.
The cleverness lies more in the ability to produce light pages.
