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How to Improve Your PageSpeed Score

β€” Alexandra Ardelean

How to Boost Your Website's PageSpeed for Better Performance

At Incorpo.ro, we understand the importance of a fast-loading website. Not only does it enhance user experience, but it also plays a crucial role in search engine optimization (SEO). A key metric in this regard is PageSpeed, which measures the time it takes for a website to load. Improving your PageSpeed score can lead to better engagement, lower bounce rates, and higher conversions.

To analyze and enhance your website's performance, tools like Google's Lighthouse and PageSpeed Insights are invaluable. They provide insights into areas that need improvement and offer suggestions for optimization. In this article, we'll guide you through some effective strategies to boost your PageSpeed score.

The Impact of Images on Performance

Images often account for most of the downloaded bytes on a web page and can significantly slow down your site. Optimizing images is one of the most effective ways to improve performance. This involves using modern image formats like WebP, which provides superior compression and quality characteristics compared to older formats like JPEG and PNG. Additionally, ensuring that JPEG images are properly encoded can make a substantial difference.

To experiment with different image settings and formats, tools like Scrooge.app can be very helpful. Once you've determined the best settings for your images, you can apply them across your site using batch processing tools. Moreover, employing responsive images techniquesβ€”such as using the srcset attribute on image elements or the <picture> elementβ€”can provide the most appropriate version of an image based on the user's device.

The Role of Third-Party Scripts in Website Speed

Plugins and third-party scripts are often necessary for adding functionality to your website but can also be a source of performance issues. These scripts may transfer large amounts of data and delay page rendering. To identify problematic scripts, Lighthouse can highlight unused JavaScript, while the network panel in browser development tools (DevTools) can pinpoint scripts that are slow to load.

Consult with your development team to evaluate whether all third-party scripts are essential or if some can be deferred or removed without impacting site functionality.

Implementing Lazy Loading

Lazy loading is a technique that delays the loading of page elements until they are neededβ€”usually when they enter the viewport. This can significantly reduce initial load times and save bandwidth. For images and iframes, adding loading="lazy" to HTML elements instructs the browser to load these resources only when they come into view. Videos can be handled similarly with the preload attribute and a poster image as a placeholder.

For other types of content like product lists or articles, custom lazy loading can be implemented by your developers to further enhance performance.

By adopting these strategies, you'll make strides in improving your website's PageSpeed score and overall user experience. For more in-depth guidance on creating faster websites, we recommend visiting web.dev/fast.

We hope this article has been informative. If you have any further questions or would like to learn more about website performance optimization, feel free to reach out in the comments section below.

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