How do you ensure that a website is optimized for performance and loading speed in low-resource environments (e.g., older devices)?
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Sample interview questions: How do you ensure that a website is optimized for performance and loading speed in low-resource environments (e.g., older devices)?
Sample answer:
Optimizing Websites for Performance and Loading Speed in Low-Resource Environments
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Minify and Optimize Resources:
- Utilize tools like CSSNano and UglifyJS to reduce the size of CSS, JavaScript, and HTML files.
- Remove unnecessary code, comments, and whitespace.
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Enable Compression:
- Leverage GZIP or Brotli compression to shrink the size of HTTP responses, reducing download time.
- Configure server-side compression to automatically compress responses.
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Optimize Images:
- Use appropriate image formats (e.g., JPEG for photos, SVG for icons).
- Optimize images using tools like ImageOptim or Photoshop to reduce their size while maintaining quality.
- Consider lazy loading images to delay their loading until needed.
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Prioritize Load Order:
- Place critical resources at the top of the HTML document to ensure their loading priority.
- Defer non-essential resources (e.g., scripts, fonts) to load later.
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Optimize Network Requests:
- Use HTTP/2 or SPDY to improve parallel request handling.
- Combine multiple resources into a single file (s… Read full answer