Saving HTML & Rendered HTML To Help Debugging
We occasionally receive support queries from users reporting a missing page title, description, canonical or on-page content that’s seemingly not being picked up by the SEO Spider, but can be seen to exist in a browser, and when viewing the HTML source.
Often this is assumed to be a bug of somekind, but most of the time it’s just down to the site responding differently to a request made from a browser rather than the SEO Spider, based upon the user-agent, accept-language header, whether cookies are accepted, or if the server is under load as examples.