- October 14, 2023
- Core Web Vitals
Are you aware of the hidden costs of unused styles in your website’s CSS? It may be causing poor performance, and you may not even be aware. Discover the impact of core web vitals and CSS on your website, and how to optimise performance by using best practices. Learn how to compress and minify stylesheets, and how to test and monitor your website’s performance.
- Unused CSS can impact a website’s Core Web Vitals scores and performance.
- Techniques like CSS minification and linting tools can help reduce unused CSS.
- Compressing and minifying CSS improves page speed and performance.
- Regularly testing and monitoring website performance is crucial for addressing unused styles and optimising performance.
Unused CSS, which is code that is included but not used on the page, can be especially detrimental to a website’s Core Web Vitals scores. This is because unused CSS takes up bandwidth and adds to the total amount of code that the browser needs to parse. As a result, unused CSS can lead to longer loading times, which can negatively impact the website’s Core Web Vitals scores.
The good news is that there are ways to reduce the amount of unused CSS on a website. For example, web developers can use CSS minification techniques to streamline the code, as well as use linting tools to identify and remove any unnecessary code. Additionally, they can use code splitting to separate the code into smaller chunks, which can help reduce the amount of code that needs to be parsed.
The bottom line is that it’s important to be conscious of the impact that unused CSS can have on a website’s performance. Taking the time to optimise the code can help ensure that a website’s Core Web Vitals scores are not negatively impacted by unnecessary code. By doing so, web developers can help ensure that their websites perform well and don’t incur any unnecessary costs.
Take steps to optimise your website’s performance by reducing the amount of unused CSS code. Unused CSS styles can take up a lot of space and slow down your website’s loading speed, which can impact your Core Web Vitals score. Here are four tips to help you reduce the amount of unused CSS and improve your website’s performance:
- Use a tool like UnCSS to remove unused selectors from your stylesheets.
- Use a pre-processor like Sass to optimise and minify your stylesheets.
- Audit your website regularly to identify and remove any obsolete selectors.
- Make sure to refactor your code to keep it up to date.
CSS Best Practices
Drill down into your CSS to uncover best practices and ensure that your web pages are optimised. Core Web Vitals (CWV) are a set of metrics used to measure the performance of a website, and they include Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). By optimising your CSS, you can improve the performance of your web pages and reduce the time it takes for users to access your content.
When it comes to writing efficient CSS, it’s important to understand the cascade and how it affects your code. To ensure that the most relevant styles are being applied, you should use a combination of selectors that are specific to the element you’re targeting. Additionally, you should use shorthand where possible to prevent redundant rules and minimise the amount of code you write.
In addition to understanding the cascade and using shorthand, it’s also important to avoid writing unused styles. Unused styles can add unnecessary weight to the page, increasing the time it takes for the page to load and hurting your CWV scores. To prevent this, you can use code linters to identify any unused styles and remove them from your code.
Finally, consider using a pre-processor like Sass or Less to make writing and managing your CSS easier. Pre-processors allow you to break down your code into smaller pieces that can be reused, which can make your code more readable and easier to maintain. Additionally, they allow you to use variables and nesting, which can help you avoid potential errors when making changes.
Compress & Minify
Compressing and minifying your CSS can help you save time and reduce page size, ultimately leading to better Core Web Vitals scores. By compressing and minifying your CSS you can:
- Improve page speed and performance.
- Reduce the number of requests your site makes.
- Increase the amount of content that can be cached.
- Make it easier to debug issues.
Compressing and minifying your CSS is an essential part of optimising your website for Core Web Vitals. It can help reduce the size of your CSS files, making them faster to download and parse. It can also reduce the number of requests your site has to make, which can help improve your page speed scores.
The process of compressing and minifying your CSS is relatively simple. First, you need to identify any unused styles in your CSS. Next, you can use a tool like CSSNano to remove any unnecessary code and compress your CSS. Finally, you’ll want to minify your CSS by removing any extra whitespace or comments.
Compressing and minifying your CSS can also help you identify any potential issues with your code. By removing unused code, you can make it easier to debug any issues that arise. This can save you time and help ensure that your website is running at its best.
Test & Monitor
After compressing and minifying your CSS, it’s important to test and monitor the results to ensure that your website is optimised for Core Web Vitals. To do this, you’ll need to measure the performance of your website to identify any issues that need to be addressed. This should be done on a regular basis, as changes to your website or new updates can affect the performance.
Testing for Core Web Vitals requires the use of tools such as Google’s PageSpeed Insights, Lighthouse, or Web Vitals Chrome Extension. These tools measure the loading performance of your website, the responsiveness of user interactions, and the stability of your content as it is displayed. You’ll also need to monitor the usage of your website to determine if any areas are not performing optimally.
When testing and monitoring your website, it’s important to look for any unused styles that may be affecting the performance of your website. Unused styles can add unnecessary code and can slow down your website’s loading speed. It’s important to identify and remove any styles that are not being used or are not needed.
Finally, it’s important to check for any errors or warnings that may be affecting the performance of your website. These should be addressed as soon as possible to ensure that your website is running optimally.
Testing and monitoring your website for Core Web Vitals is essential for ensuring that your website is optimised for performance. By removing any unused styles and addressing any errors or warnings, you can ensure that your website is running at its best.
You’ve seen the hidden costs of unused CSS, and how core web vitals and performance optimisation can help you save time and money. By following best practices like compressing and minifying your code, and testing and monitoring regularly, you can make sure your website is running optimally and your customers are getting the best experience. So, what are you waiting for? Get optimising now and start saving!
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