Publishing a Blend4Web (or any WebGL) application on Facebook generally requires embedding the interactive content within a Custom Facebook Page Tab using an iframe, since direct posting of WebGL is not natively supported in the feed. The critical challenge in this process is ensuring the complex 3D experience remains mobile-responsive and performs seamlessly on the vast majority of smartphones accessing Facebook, demanding rigorous optimization for touch interfaces and varying screen sizes. Successfully integrating advanced interactive media into mobile-first platforms requires more than just code, it demands a strategic approach to user experience, which is why complex projects need an experienced mobile app design company like CMARIX Infotech that can guarantee both performance and user-centric design.