this
https://nyc3.digitaloceanspaces.com/apiintegrations/Web-Scraping-Services/web-scraping/the-very-best-web-scuffing-tools-for99831.html
A spider, placed it another means, is a tool to generate a list of Links that can be fed into your extractor. Give them a web page to start with, and also they will comply with all these web links on that web page.