Serendipity Online Marketing

Why You Should Care About Google Lighthouse

Lighthouse is an Open Source tool that effectively audits web pages and applications to enhance the quality of them. The audits are conducted to measure a variety of areas of a website and webpage. For one, it focuses on performance. The other areas it focuses on include the accessibility and the best practices in order to figure out how the entire user experience scores and whether or not there are any specific problems with it that can detract from a good end-user experience. Below, we will be going over some of the reasons you should care about Google Lighthouse.

Reasons You Should Care About Google Lighthouse:

1. Receive Actionable Advice.

One of the main reasons you should care about Google Lighthouse is due to its unique ability to offer you actionable advice from real data that can help you boost your end-user experience. You are going to get presented with all kinds of data that can help you improve your website in total. Not only will you be able to get the metrics that mean something, but you will also get an actionable report that includes information regarding the most technical aspects of your entire website including CSS selectors, DOM elements, and even the entire infrastructure set up that your website is built on.

2. It’s Built By Experts.

Another good thing that comes from Google Lighthouse is derived from it being uniquely built by the best experts at Google. The engineers that built the performance tooling software have a deep understanding of browsers and what matters inside because they effectively build them. Therefore, you know that they have the greatest expertise when it comes to auditing a website because they fully understand the inner workings of the browser and search engine experience as a whole. They also have direct access to API creators which can help them with both benchmarking and accurate tracking.

3. Measure a Website’s Speed.

When it comes to measuring a website’s speed, there is no better way to go about it. The fact is, the speed of your website is crucial in today’s mobile dominated marketplace. As more consumers change to using their mobile devices rather than traditional desktop or laptop computers, it is becoming increasingly important to maintain as fast of a speed as possible. Everything can affect a website’s speed including the response time, animation time, idle time, and even load times. Thus, you will need to have the proper analytics on each to see where improvements can be made, where they should be made, and if they need to be made in the first place. Being able to use tools like this to help measure website speed can be a game-changer for optimizing your end-user experience.

For anyone that is looking to improve their end-user experience, Lighthouse is an invaluable collection of tools. Not only will you be able to get quantifiable and actionable metrics, but also having actionable advice laid out in an easy to understand way which can help you make the proper adjustments and corrections to your web app or website to improve the end-user experience.


Lighthouse is Google’s free, open source, and automated site monitoring tool. It can help ecommerce businesses track site load times, accessibility, and search engine optimization.

Lighthouse is available in a few forms, including via current versions of the Google Chrome web browser.

An ecommerce owner or manager simply opens Chrome’s developer tools by alt-clicking anywhere on a web page, selecting “Inspect,” and then opening the “Audits” tab to find Lighthouse.

Lighthouse is available under the “Audits” tab of Chrome developer tools.

When an audit is run, Lighthouse will load the target website several times as it gathers information about site structure, tags, and performance. The tool puts a premium on mobile, so Lighthouse does its best to emulate a smartphone, even throttling the network connection to something like 3G and testing the page offline.

Improving Your Site

Lighthouse is meant to “help you identify and fix common problems that affect your site’s performance, accessibility, and user experience,” according to Google.

Put another way, the world’s largest search engine wants to use its extensive experience to give your company advice. Followed intelligently, Lighthouse’s findings could help your online store improve, and, perhaps, become easier for shoppers to find and use.

Lighthouse provides a score for each audit category and then offers actionable feedback to improve your site.

A Lighthouse audit will provide five categories of feedback, each with a ranking of zero to 100.

  • Performance. How quickly your site loads or how quickly key elements become available to users on mobile. This audit is based on several data points including when the first elements are painted and when the page becomes interactive.
  • Progressive Web App. Based on the progressive web app basic checklist, Lighthouse looks for your site’s level of completeness. Google is emphasizing PWAs, which improve mobile performance and may boost search engine rankings.
  • Accessibility. This score is a weighted average of about 35 accessibility traits. Accessibility is one of the most important things online merchants can monitor; it is very helpful to have this built in. Not providing an accessible site might be illegal.
  • Best Practices. Checks for the use of current web development best practices, such as employing HTTP/2.
  • SEO. Audits nine search engine optimization basics. This is significantly less thorough than some third-party SEO audit tools or extensions, but it can still help your business get an idea of how it will perform in Google and other search engines.

Usable Results

In many cases, Lighthouse provides details a business can use to improve its site.

As an example, a Lighthouse audit of conducted on May 7, 2018 found a few accessibility errors, including an iframe without a title attribute. Lighthouse points out that this missing title could make understanding the page relatively more difficult for shoppers using a screen reader and shows the specific iframe tag in question.

Lighthouse’s feedback is often specific enough to take action and improve your score.

Armed with this information a Walmart developer could add the required title attribute and improve the site’s accessibility.

Similarly, a Lighthouse audit of on May 7, 2018 identified several CSS declarations not used. The tool pointed to the specific style sheets in question and estimated how many bytes of data Kohl’s might save if it edited this CSS.

Kohl’s might save a few bytes by removing unused style declarations.

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