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tech 10 June 2026

How Building an HTML-First Site Doubled Our Users Overnight

Learn how adopting an HTML-first approach skyrocketed a company's user base overnight. A strategic decision that transformed the user experience and accessibility.

Article inspired by the original source
How building an HTML-first site doubled our users overnight ↗ mohkohn.co.uk

Introduction

In a rapidly evolving tech landscape, it's sometimes surprising to see how simple, proven solutions can have a monumental impact. This is exactly what happened when we decided to rebuild a crucial site for a utility provider using an HTML-first approach. The result? Our users doubled overnight.

The Context

Our client, a utility company, was struggling with a failing registration system. Customers had to use an old ASP form on the website or follow a manual, costly process. A change was imperative, especially with the looming threat of hefty fines if customer satisfaction fell below 96%.

Previous modernization attempts, including a React app, had failed. The site was riddled with accessibility and performance issues. That's when we decided to take a new direction with Astro, a technology that allows building HTML-first sites.

Why HTML-First?

The HTML-first approach focuses on ensuring that the site is functional even without JavaScript. This guarantees maximum compatibility, even on less powerful devices or with unstable internet connections. In other words, it makes the site accessible to everyone, everywhere.

Here are some reasons why we chose this approach:

  • Increased Accessibility: Any user, regardless of their device, should be able to access the site.
  • Improved Performance: Less reliance on JavaScript means faster load times.
  • Data Stability: Forms are designed never to lose entered information.

Implementation and Results

Using Astro, we built a site where JavaScript is only used for progressive enhancements. This means the essential features are available in pure HTML, with JavaScript only adding extra functionalities.

The result? A 100% increase in users overnight. Users could finally access the site and complete their registrations without hindrance, even with outdated devices or slow internet connections.

Case Study: Social Implications

A poignant example that inspired our approach comes from a study on the accessibility of online public services. Imagine a young woman in a social aid center, using a rudimentary PSP browser to access public services online. Thanks to simple HTML pages, she could navigate effectively, demonstrating the crucial importance of inclusive design.

Conclusion

Adopting an HTML-first approach was a strategic decision that radically transformed user experience, improved accessibility, and boosted site performance. This case demonstrates that sometimes, going back to basics can be the key to success.

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HTML-first accessibilité performance web Astro design inclusif
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