One HTML File Challenge
In an era of complex web frameworks and build tools, there’s something elegant about creating a complete web experience in a single HTML file. The “One HTML File Challenge” takes us back to the roots of web development while pushing the boundaries of what’s possible with pure HTML.
The Challenge
Create a complete, interactive web experience using exactly one HTML file. No external resources, no separate CSS or JavaScript files, no frameworks - just pure HTML with embedded CSS and JavaScript.
Requirements
- Your entire application must be contained in a single .html file
- No external resources or dependencies allowed (including CDN links)
- Must include styling (via internal CSS)
- Must include interactivity (via internal JavaScript)
- Must be responsive and work across modern browsers
- File size must be under 100KB
- Cannot use data URIs to embed external resources
Scoring Criteria
Submissions will be evaluated based on:
- Functionality: How well the application works within the single-file constraint
- Code Organization: How cleanly the HTML, CSS, and JavaScript are structured within the file
- Performance: How efficiently the application runs despite all code being in one file
- Creativity: How innovative the solution is given the constraints
- User Experience: How polished and professional the final product feels
Tips and Suggestions
- Use the
<style>tag effectively for CSS organization - Leverage HTML5 semantic elements
- Consider using CSS Grid and Flexbox for responsive layouts
- Utilize local storage for data persistence
- Take advantage of modern JavaScript features that work in browsers
- Use CSS custom properties (variables) for maintainable styling
- Consider progressive enhancement principles
Resources
Remember, the goal is to demonstrate that powerful web applications can be built with minimal complexity. Focus on creating a compelling user experience while embracing the constraints of a single file. Good luck!