Bad URL structure is far too common of an issue in SEO. It can drag down your rankings, keep your pages from appearing in search engine indexes and destroy ranking authority from any other pages and websites you are a part of.
This is sometimes the fault of content management systems who can build poor URL structures within the websites. Elsewhere, some platforms devise URLs with illegal characters.
Search engines do try to read and index even the most poorly made URLs, but paying attention to your URL management and optimization has its own set of benefits. It’s about time you made sure you are doing your part.
It isn’t difficult to diagnose URL based issues, however. You can check for errors and warnings that suggest URLs are causing the issues, and you can audit all of your URLs for proper syntax.
Google and Bing Webmaster Tools also have reports that reveal duplicate content. From there, you can examine the webpages themselves and their locations. Google and Bing aren’t even the only ones with these types of tools. Plenty of third-party SEO tools can help identify these types of issues. Also make sure to check for unsafe characters.