Understanding and Improving Google PageSpeed Insights Results

Mikołaj Sykuła
Mikołaj Sykuła
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Jun 14, 2023
Understanding and Improving Google PageSpeed Insights Results

Google PageSpeed Insights is a valuable tool for assessing your website's performance and identifying potential areas for improvement. This article aims to provide a deep understanding of Google PageSpeed Insights and practical steps to enhance your website's performance.

Understanding Google PageSpeed Insights

Google PageSpeed Insights provides a performance score for both mobile and desktop versions of a webpage. It measures several aspects of web performance such as First Contentful Paint (FCP), Speed Index (SI), Time to Interactive (TTI), and more. Understanding these metrics can help you identify where your webpage might be falling short.

Key PageSpeed Metrics

1. First Contentful Paint (FCP)

FCP measures the time it takes for the first content element to be painted on the screen. This could be an image, text block, or any other content element.

2. Speed Index (SI)

The Speed Index measures how quickly content is visually displayed during page load. The lower the SI, the better the user perception of page load speed.

3. Time to Interactive (TTI)

TTI is the time it takes for a page to become fully interactive. A lower TTI ensures that your users can engage with your page as soon as possible.

Improving Your PageSpeed Insights Score

1. Minimize Render-blocking Resources

Render-blocking resources (CSS and JavaScript files) can significantly impact your PageSpeed score. To improve this, you could inline critical CSS, defer non-critical CSS, and defer or async non-critical JavaScript.


2. Enable Text Compression

Text-based resources should be served with compression (gzip or Brotli) to minimize total network bytes.

Nginx configuration for gzip


3. Optimize Images

Large images can significantly slow down your page. Optimizing your images by reducing their size without compromising quality will improve your page load speed.


Why PageSpeed Insights Score Isn't Everything

While PageSpeed Insights provides valuable data about your site's performance, it's essential not to lose sight of the bigger picture. A high score doesn't necessarily equate to a great user experience, and vice versa. Some aspects of your site, like interactive elements or high-quality images, might reduce your PageSpeed score but enhance the user experience. Remember, your website is primarily for users, not search engine algorithms.


By understanding and applying the information from Google PageSpeed Insights, you can significantly improve your website's performance. However, while pursuing that perfect score, never lose sight of what's most important - providing a smooth and enjoyable user experience.

References and Further Reading

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