RE: How to Optimize Website Navigation for Mobile First Indexing?
I recommend to use LSI keywords in the URL for mobile versions. Long URLs can work for desktop browsers but for mobile search the short and crisp URL will work.
For example: Suppose your title is: Understanding the Options Available for Mobile App Development: HTML5 vs Native vs Hybrid. Now it is not possible to use such a big URL for the post because it will not be easily crawled by the mobile search algos. Hence, using URL like
native-hybrid-html5-mobile-app-developmentcould be more beneficial.