Does anyone remember the Firefox extension Scrapbook, from "back in the day"? I used to use it a lot. Look "back" 5 - 10 years, or more, and it's striking how

Does anyone remember the Firefox extension Scrapbook, from "back in the day"? I used to use it a lot. Look "back" 5 - 10 years, or more, and it's striking how many web resources are no longer available. A local copy is your only insurance. And even then, having it in an open, standards compliant format is important (e.g. a file you can load into a browser -- I guess either a current browser or a containerized/emulated one from the era of the archived resource). Something that concerns me about JavaScript-ed resources and the like. Potentially unlimited complexity making local copies more challenging and perhaps untenable.