Google PageSpeed score has become truly important, especially for mobile SEO performance. Optimization requires not only code cleanup but also techniques like image resizing, lazy loading, and caching.
An interesting example of this can be seen on the site
Waffle House Menu . This site, with its simple yet user-friendly design, achieves high speed scores and is also well-optimized for SEO. Although not OpenCart-based, it can serve as a good reference for its content structure, schema usage, and page speed. You can gain some insights by examining the site structure.
Source:
https://waflehousemenu.com/hashbrown-bowls/