There are many site crawlers out there, any of which will get the job done. A good crawler will de-clutter the information and make it easier to pick out the exact things you’re looking for rather than having to test them back-and-forth on the site itself endlessly or piece together a variety of tools to accomplish the same thing. This is where a more in-depth site crawling tool is of immense help.
Sure, it’s simple enough to input a website into a crawling service, have it spit out a spreadsheet of URLs, and then start combing through it to identify problem areas. This entails running a scan of every URL on the site to identify each HTML page, image, Javascript code, CSS sheet, and so on in order to create a map of how the website is structured, identify technical errors, and determine what needs to be adjusted to impact performance and rankings. One of the first and most important steps in signing on a client for SEO services is performing a crawl of their website in its current state.