Case Study

Full-Stack multi-lingual boxing club website, with smooth animation and used Sanity for back-end. Explore the high-performance, visually stunning gym website designed with Next.js, TailwindCSS, and Sanity.


Multilingual Gym Website with Next.js, TailwindCSS, and Sanity


The primary goal for the gym website was to create a visually appealing and high-performing online presence that would catch the eye of potential clients. The site needed to be user-friendly and adaptable across multiple languages to cater to a diverse clientele.


The main challenge in the development of the gym website was implementing a robust multilingual system that could seamlessly switch between Spanish, Dutch, and English. This was crucial for engaging with a broad audience in their preferred languages.


Technology Stack

  • Next.js: Chosen for its server-side rendering capabilities, which enhance SEO and performance.
  • TailwindCSS: Used for its utility-first approach that accelerates custom styling processes, ensuring a unique and responsive design across various devices.
  • Sanity: Selected for its intuitive CMS that allows gym staff and potentially a dedicated SEO marketer to easily manage content for lessons and blogs.


  • i18next: Integrated with Next.js to facilitate the translation and switching of languages on the fly, providing a seamless user experience in multiple languages.

Performance Optimization

  • Continuous optimization was performed, informed by extensive documentation review, online research, and leveraging language models for troubleshooting and best practices.

SEO and Accessibility

  • Enhanced content management within Sanity allowed for easy SEO adjustments, ensuring that the site ranks well across different search engines and is accessible to all users.


The website achieved impressive metrics that demonstrate its performance and user experience quality:

  • Performance: 94/100
  • Accessibility: 95/100
  • Best Practices: 100/100
  • SEO: 100/100

These scores reflect a well-optimized site with excellent loading times, high accessibility standards, and robust SEO practices. On desktop devices, the site scored a perfect 100 in all categories, highlighting its exceptional design and functionality.


The gym website stands out as a state-of-the-art solution tailored to the fitness industry, showcasing a blend of technology and design that drives user engagement and satisfaction. Future plans include continuous enhancements and possibly integrating additional features based on user feedback and emerging web technologies..

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