The goal is to produce 100% error free XML sitemaps that ensure you maximize your crawl budgets. HREF Builder is the only HREFLang tool that has built-in validation for redirects, 404, canonical and robots directives.
Every redirect, canonical or robots block is a wasted request from the search engines. The search engines have stated no more than 1% of your submitted URL’s should have errors and if they encounter more they will slow or stop indexing your site and sitemaps. Why should they waste their time getting bad data? For more details on what we check and how we enable you to report these errors please visit our Redirect, Canonical and Robots Checking FAQ for more information.