Insights

Google Lighthouse Performance

The Google Lighthouse performance score is a metric that measures the speed and performance of a website. It’s an overall score that ranges from 0 to 100 and is generated based on a number of different performance metrics, such as the time it takes for a website to load, the time it takes for a website to become interactive, the size of the resources used by the website, and other factors that impact the user experience.

A high performance score in Google Lighthouse indicates that a website is fast and responsive, which can lead to a better user experience and improved search engine rankings. On the other hand, a low performance score can indicate that a website is slow and unresponsive, and can negatively impact the user experience.

Mobile Performance
13%
Desktop Performance
67%

Core Web Vitals

Core Web Vitals are a set of specific factors that Google considers important in a webpage’s overall user experience. Core Web Vitals are made up of three specific page speed and user interaction measurements: Largest Contentful PaintFirst Input Delay, and Cumulative Layout Shift.

Pass or fail?

MobileFail
DesktopFail

CWV Breakdown

VitalMobileDesktopTarget
Largest Contentful Paint12.0 s3.2 s< 2.5 s
First Input Delay600 ms80 ms< 100ms
Cumulative Layout Shift0.290.085 0.1

Tracking scripts

All the tracking scripts on the site generated ~799 KB of data

A tracking script is a code snippet designed to track the flow of visitors who visit a website. Media, advertising, and analytics organisations will provide a script to add to your website that sends data directly to their servers. This data can then be used to measure goals and conversions, analyse user behaviour, and influence advertising campaigns.

Consider how much of this data you actually need and use? How often do you review the analytics data, and does this inform genuine change? Are you actively running social media campaigns? Consider pausing or removing tracking scripts that aren’t being actively used.

View details
google-analytics.com 7 72 KB
googletagmanager.com 4 361 KB
6834922.fls.doubleclick.net 4 5 KB
secure.quantserve.com 1 9 KB
googleads.g.doubleclick.net 2 4 KB
googleadservices.com 1 2 KB
ad.doubleclick.net 2 33 KB
connect.facebook.net 4 279 KB
s.yimg.com 2 8 KB
bat.bing.com 3 15 KB
stats.g.doubleclick.net 4 2 KB
google.com 5 4 KB
googleads4.g.doubleclick.net 2 2 KB
analytics.google.com 2 0 B
google.com.au 1 620 B
sp.analytics.yahoo.com 1 928 B
pixel.quantserve.com 2 1 KB
facebook.com 4 984 B

Opportunities

Remove autoplaying or preloaded media files1 video531.0 B0g CO2

By removing 1 autoplaying or preloaded videos, roughly 531.0 B could be removed from the page load.

This would reduce the page transfer size by 0% and reduce the pages emissions from 0.5 grams of CO2 to 0.5 grams of CO2.

Autoplaying videos can have a negative impact on the user experience for several reasons:

  1. Increased data usage: Autoplaying videos can consume a lot of data, especially if they are set to play in high definition. This can be a problem for users with limited data plans or slow connections, who may experience slow or interrupted playback.
  2. Annoyance factor: Autoplaying videos can be annoying for users, especially if they are accompanied by sound. This can lead to a negative perception of the website and decreased engagement.
  3. Reduced accessibility: Autoplaying videos can be a problem for users with accessibility needs, such as users who are blind or have hearing difficulties.
  4. Increased page load time: Autoplaying videos can increase the overall page load time, leading to a slower user experience.
  5. Decreased battery life: Autoplaying videos can consume a lot of battery power, especially on mobile devices, leading to reduced battery life.

In order to minimise the impact of autoplaying videos on the user experience, it is recommended to use them sparingly and only when necessary. It is also important to provide users with the option to turn off autoplaying videos and to allow them to control the playback of videos on the page. Additionally, videos should be optimised for performance and should be accompanied by captions or transcripts to improve accessibility.

View details
Audio-Fred-EveryEye.mp3 531 B 0%
Subset large font files25 KB0.006g

Fonts should be subsetted to reduce the file size, improve performance, and reduce emissions. Subsetting a font involves removing any characters that are not needed for a particular use case, resulting in a smaller file size and faster page load times. Some specific reasons why fonts should be subsetted include:

  1. Reduced file size: Subsetting a font removes any unused characters, which can result in a smaller file size. This can help to reduce the amount of data that needs to be downloaded, leading to faster page load times and lower emissions.
  2. Improved performance: Fonts that are subsetted are faster to load and render than fonts that are not subsetted. This can help to improve the overall performance of a website, leading to a better user experience.

Overall, subsetting fonts is a good practice for anyone looking to optimize the performance and reduce the emissions of a website of a website.

View details
memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 ~43 KB ~25 KB
Remove third party font files

Font files should be loaded from the same hosting as the website because

  1. Increased loading time: Third-party sub-resources, such as scripts, fonts, or images, need to be downloaded from a separate server before they can be displayed on the website. This can increase the overall loading time of the page, leading to a slower user experience.
  2. Dependence on external servers: The loading of third-party subresources is dependent on the availability and performance of the external servers that host them. If these servers are slow or unavailable, it can result in slow page loading times or even errors.
  3. Increased risk of security threats: Third-party subresources can introduce security risks to a website, as they can contain malicious code or be used to track user activity.
View details
fonts.gstatic.com memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2
Replace jQuery and jQuery libraries with more modern code58 KB0.01g

jQuery is a popular and widely-used JavaScript library that simplifies web development by providing a set of tools and functions to interact with HTML documents, handle events, create animations, and make asynchronous HTTP requests.

In the past, jQuery was a very popular choice for web development because it simplified many common tasks and provided a consistent and cross-browser-compatible API. However, with the advancement of modern web technologies and improvements in browser capabilities, the need for jQuery has decreased.

Many modern web frameworks and libraries, such as React and Angular, provide their own set of tools for handling common tasks and interacting with the DOM, making jQuery less necessary in many cases. The Javascript engine in modern browsers have also become more consistent in the feature implementations often eliminating the need for a library like jQuery.

jQuery represents an opportunity because:

  1. Performance: While jQuery is a powerful and useful library, it can slow down website performance due to its large size and complex code. Modern browsers have also improved their native support for many of the features that jQuery provides, reducing the need for it.
  2. Maintainability: jQuery code can be difficult to maintain and update, particularly as web technologies evolve and change. This can make it harder for developers to keep up with best practices and standards for web development.
  3. Accessibility: Some jQuery plugins and features can create accessibility issues, particularly for users who rely on assistive technologies. This can make it harder for people with disabilities to use and access websites.
View details
First Contentful Paint

First Contentful Paint (FCP) is a performance metric that measures the time it takes for the first piece of content to be rendered on the screen when a user navigates to a web page. This content can be any visual element on the page, such as text, images, or a background color.

FCP is important because it directly affects the perceived speed of a website, and can impact user engagement and conversion rates. A faster FCP can lead to a better user experience and improved performance.

Here are a few ways you can optimise your FCP:

  1. Optimise images: Large, unoptimised images can slow down a page’s FCP. You can optimise images by compressing them, reducing their dimensions, and choosing the right format for each image.
  2. Minimise HTTP requests: Each resource requested by a web page, such as images, scripts, and stylesheets, requires a separate HTTP request. Minimising the number of HTTP requests can help to reduce the time it takes for a page to render.
  3. Prioritize critical content: Prioritizing critical content, such as above-the-fold content, can help to ensure that users see something on the screen quickly, even if the rest of the page is still loading.
  4. Reduce server response time: A slow server response time can significantly impact FCP. Optimizing server-side code and server settings can help to reduce response times and improve FCP.
  5. Use a performance monitoring tool: There are many tools available that can help you monitor your website’s performance, including FCP. These tools can help you identify performance issues and track your progress as you implement optimizations.
MobileDesktop
Score3%43%
Timing6.1 s1.7 s
Largest Contentful Paint

Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric

MobileDesktop
Score0%30%
Timing12.0 s3.2 s
Total Blocking Time

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric.

MobileDesktop
Score6%99%
Timing2,150 ms70 ms
Cumulative Layout Shift

Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more about the Cumulative Layout Shift metric.

MobileDesktop
Score41%93%
Timing0.290.085
Speed Index

Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric.

MobileDesktop
Score6%18%
Timing10.9 s3.4 s
Time to Interactive

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

MobileDesktop
Score7%79%
Timing15.2 s3.0 s
Max Potential First Input Delay

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

MobileDesktop
Score4%98%
Timing600 ms80 ms
First Meaningful Paint

First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric.

MobileDesktop
Score10%39%
Timing6.7 s1.8 s
Eliminate render-blocking resources

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles. Learn how to eliminate render-blocking resources.

MobileDesktop
Score46%80%
InsightPotential savings of 1,050 msPotential savings of 280 ms
Reduce unused CSS

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

MobileDesktop
Score88%100%
InsightPotential savings of 48 KiBPotential savings of 46 KiB
Reduce unused JavaScript

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

MobileDesktop
Score16%61%
InsightPotential savings of 760 KiBPotential savings of 759 KiB
Efficiently encode images

Optimized images load faster and consume less cellular data. Learn how to efficiently encode images.

MobileDesktop
Score52%100%
InsightPotential savings of 189 KiBPotential savings of 189 KiB
Serve images in next-gen formats

Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption. Learn more about modern image formats.

MobileDesktop
Score47%100%
InsightPotential savings of 303 KiBPotential savings of 320 KiB
Reduce initial server response time

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

MobileDesktop
GradeFailFail
InsightRoot document took 760 msRoot document took 760 ms
Avoids enormous network payloads

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

MobileDesktop
Score98%97%
InsightTotal size was 2,126 KiBTotal size was 2,238 KiB
Serve static assets with an efficient cache policy

A long cache lifetime can speed up repeat visits to your page. Learn more about efficient cache policies.

MobileDesktop
Score25%25%
Insight23 resources found23 resources found
Avoids an excessive DOM size

A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows. Learn how to avoid an excessive DOM size.

MobileDesktop
Score98%97%
Insight606 elements620 elements
JavaScript execution time

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

MobileDesktop
Score33%95%
Timing4.9 s1.0 s
Minimize main-thread work

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

MobileDesktop
Score10%88%
Timing7.9 s2.1 s
Ensure text remains visible during webfont load

Leverage the font-display CSS feature to ensure text is user-visible while webfonts are loading. Learn more about font-display.

MobileDesktop
GradeFailFail
Minimize third-party usage

Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading. Learn how to minimize third-party impact.

MobileDesktop
GradeFailPass
InsightThird-party code blocked the main thread for 1,990 msThird-party code blocked the main thread for 100 ms
Image elements do not have explicit width and height

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

MobileDesktop
GradeFailFail