Questions tagged [lighthouse]

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3 votes
1 answer
259 views

Why does PageSpeed Insights ask me to use next generation images when I am using Cloudflare Polish?

When I test my site on Google's PageSpeed Insights, it reports that some of the images should be optimized by converting them to .webp or .avif format. However, I am already using the Cloudflare ...
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3 votes
0 answers
21 views

Chrome Lighthouse result for LCP don't match the Performance tab values

I'm running my app on localhost and I've been experiment with the Lighthouse tool to implement some optimizations. It's a statically built NextJS app, so it should be pretty fast. This is the result I ...
2 votes
0 answers
42 views

How to add something crawlable to JavaScript links in order to satisfy Google Lighthouse

I'm doing some Google lighthouse analysis on my site and the tool is complaining about our "add to cart" links. We use a pre-fab PayPal cart system called Vibracart, which is great but is ...
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2 votes
1 answer
479 views

How to solve "Links do not have descriptive text" for Read More links that already have enough description in the context?

It's prevalent to have sections like features, or recent posts or our skills on a website's home page and these sections have short explanations and then usually have a Read More link: This image ...
3 votes
1 answer
78 views

When running Lighthouse audit of website on Chrome dev tools, turning on 'legacy navigation' really messes up website performance scores

When running Lighthouse audit of website on chrome dev tools, turning on 'legacy navigation' really messes up website performance scores. It brings performance score down by 10-15 points on some URLs ...
2 votes
0 answers
16 views

How Google Lighthouse check Speed index time

I am tuning the performance of a wordpress website. So I use the Google Lighthouse, which is built in function of browser console, to check the score the website. The homepage is an article page with ...
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2 votes
2 answers
38 views

Would using Bootstrap heading classes over semantic heading tags negatively impact SEO?

Will heading classes over semantic heading tags negatively impact SEO? Bootstrap Heading classes: <p class="h1">Heading 1</p> Semantic HTML Tags: <h1>Heading 1</h1>
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2 votes
3 answers
214 views

Lighthouse in Chrome vs PageSpeed Insights and Core Web Vital Metrics

From what I understand, Core web vital assessment (the top section of PageSpeed Insight result) uses field data and the lighthouse section uses lab data. And the core web vital assessment is what ...
2 votes
0 answers
49 views

Google Lighthouse and SVGs with preserveAspectRatio="none"

Google Lighthouse has a red triangle error which significantly impacts the Best Practices score: Displays images with incorrect aspect ratio I can understand why this would be regarded as an error ...
1 vote
1 answer
96 views

Is Google's Lighthouse Audit No Longer Working For The Latest Version Of Windows 10?

Lighthouse audit is no longer working for me. Are you having the same issue too? Lighthouse audit is no longer working within Google chrome's browser for me. It freezes about 90% through. My boss at ...
5 votes
0 answers
182 views

CSP added but Lighthouse flags it as missing

Ive added a CSP via PHP but Lighthouse is still saying 'Ensure CSP is effective against XSS attacks' Heres my CSP, is there something missing or set incorrectly that could be causing Lighthouse to ...
1 vote
3 answers
3k views

Why does Google Page Experience show 0% Good URLs when most of the URLs have green scores in Pagespeed for FCP, LCP, FID etc.?

The website has around 300 URLs. There are no Mobile Usability Issues reported in the google search console. There are no Security Issues reported in the google search console. There are no Ad ...
2 votes
1 answer
67 views

Does Lighthouse sometimes miss preload links if non-preload link is also present?

I added preload links to my site for two CSS files, and this was by far the biggest improvement opportunity listed in the Lighthouse audit. I added the preload links, and ran a new Lighthouse audit, ...
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1 vote
2 answers
445 views

Google Lighthouse Contrast Ratio - bad contrast ratio but it's not

I have a site where chrome dev tools light house is saying stuff does not have a sufficient contrast ratio: Steps: Go to https://curtainrodclub.net/product/architrac-94001-overlap-master-left/ Open ...
2 votes
0 answers
40 views

Why does the Lighthouse API show occasional spikes in total blocking time?

I am using the Lighthouse API to get page load metrics for my site. I'm getting some huge outliers for my Total Blocking Time (TBT) metrics. Since the results are a little different with each request, ...
  • 843
7 votes
2 answers
10k views

Lighthouse says "Links are not crawlable" on the "Skip to content" link

When running a Lighthouse check on my site, I received the following error under SEO: Links are not crawlable Search engines may use href attributes on links to crawl websites. Ensure that the href ...
1 vote
1 answer
34 views

Resource hints in HTTP header not detected in Lighthouse

I have resource hints in the document head that are detected by the browser and in Lighthouse. However, if I move them to the http header (so they can be read by the browser without parsing the ...
2 votes
1 answer
155 views

Can I rely on Google Lighthouse reports (especially for mobile sites)?

We have started to use Lighthouse to track the improvements we make to our sites. While this seems to work quite well for desktop sites, i.e. we see the values improve over time and as we make changes,...
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1 vote
1 answer
97 views

Does accessibility (assessed by tools like lighthouse) affect SEO

Google lighthouse report has separate sections for SEO and accessibility. And I guess there could be other tools as well that provide feedback on accessibility metrics (like font background contrast). ...
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