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Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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Detailed Report

Audit breakdown by category with detailed findings.

20

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
www.guinnessworldrecords.com/images/london-venue-homepage-banner.png0.0 ms578.2 KiB
www.guinnessworldrecords.com/images/b2b-online-records-banner.jpg0.0 ms321.6 KiB
www.guinnessworldrecords.com/news/2026/4/images/love-locks-thumbnail.png0.0 ms200.8 KiB
/products/images/largest-loop-the-loop-in-a-car-for-tile.jpg0.0 ms196.3 KiB
www.guinnessworldrecords.com/news/2026/4/images/oldest-rabbit-new-thumbnail.jpg0.0 ms192.7 KiB
/products/images/banner-with-gwr2026-homepage-1900x650.jpg0.0 ms189.0 KiB
/products/images/tile-for-record-selector-homepage.jpg0.0 ms186.8 KiB
/news/2026/4/images/most-marvel-tattoos-thumbnail.jpg0.0 ms184.8 KiB
www.guinnessworldrecords.com/images/dr-howard-carousel.jpg0.0 ms147.0 KiB
www.guinnessworldrecords.com/news/2026/4/images/stilts-24hr-thumbnail.jpg0.0 ms141.4 KiB
www.guinnessworldrecords.com/news/2026/4/images/strongest-bodypart-thumbnail.png0.0 ms133.7 KiB
/news/2026/4/images/stelarc-ear-on-arm-header-image.jpg0.0 ms123.7 KiB
www.guinnessworldrecords.com/news/2026/4/images/phm-lego-header-image.jpg0.0 ms120.5 KiB
www.guinnessworldrecords.com/images/gwr-studios.jpg0.0 ms95.5 KiB
www.guinnessworldrecords.com/images/marathon-runner-group-home.jpg0.0 ms91.7 KiB
www.ezojs.com/identity.js900.0 s101.7 KiB
/products/images/view-our-case-studies-with-certificate-a...0.0 ms88.2 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/images/guinness-world-records-kids-logo-on-purple-backgr...0.0 ms71.9 KiB
client.aps.amazon-adsystem.com/publisher.js3600.0 s82.4 KiB
www.guinnessworldrecords.com/images/employee-engagement-home.jpg0.0 ms62.0 KiB
www.ezojs.com/ezoic/sa.min.js600.0 s65.8 KiB
sdks.shopifycdn.com/buy-button/latest/buy-button-storefront.min.js0.0 ms60.3 KiB
www.guinnessworldrecords.com/images/logo.png0.0 ms56.6 KiB
go.ezodn.com/ezoic/ezorca.min.js14400.0 s74.0 KiB
secure.cdn.fastclick.net/js/cnvr-coreid/latest/coreid.min.js900.0 s47.1 KiB
/signals/config/1034594633413716?v=2.9.303&r=stable&domai...1200.0 s44.5 KiB
www.guinnessworldrecords.com/js/scripts.min.js0.0 ms33.4 KiB
www.guinnessworldrecords.com/images/css/loading.gif0.0 ms30.8 KiB
www.guinnessworldrecords.com/js/jquery.js0.0 ms30.0 KiB
www.guinnessworldrecords.com/css/fonts/gwr.ttf0.0 ms29.4 KiB
www.guinnessworldrecords.com/css/main.min.css0.0 ms28.5 KiB
cdn.id5-sync.com/api/1.0/id5-api.js3600.0 s34.5 KiB
www.guinnessworldrecords.com/css/fonts/rubik/rubik-medium-webfont.woff20.0 ms27.5 KiB
www.guinnessworldrecords.com/css/fonts/rubik/rubik-regular-webfont.woff20.0 ms27.3 KiB
secure.cdn.fastclick.net/js/cnvr-launcher/latest/launcher.min.js900.0 s24.7 KiB
secure.cdn.fastclick.net/js/pubcid/latest/pubcid.min.js900.0 s21.7 KiB
www.guinnessworldrecords.com/images/og_image.jpg0.0 ms18.6 KiB
www.guinnessworldrecords.com/images/css/gwr_kids_link.jpg0.0 ms16.4 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
ssl.pstatic.net/melona/libs/gfp-nac-module/synchronizer.js2221.0 s18.2 KiB
tagan.adlightning.com/ezoic-1/op.js3600.0 s15.0 KiB
wcs.naver.net/wcslog.js78.0 s10.5 KiB
snap.licdn.com/li.lms-analytics/insight.min.js86400.0 s18.7 KiB
tags.crwdcntrl.net/lt/c/16576/sync.min.js86400.0 s13.1 KiB
www.guinnessworldrecords.com/images/footer-strapline.png0.0 ms4.7 KiB
the.gatekeeperconsent.com/cmp.min.js300.0 s3.0 KiB
config.aps.amazon-adsystem.com/configs/aa05931b-5308-4ea3-95a2-adf84f4ffde43600.0 s2.9 KiB
www.guinnessworldrecords.com/scripts.js0.0 ms2.2 KiB
secure.cdn.fastclick.net/js/cnvr-launcher/latest/launcher-stub.min.js900.0 s1.1 KiB
cmp.gatekeeperconsent.com/min.js0.0 ms856 B
/collect?v=2&fmt=js&pid=8785889&time=1776804626949&url=ht...0.0 ms695 B
go.ezodn.com/ezoicanalytics.js?cb=1&dcb=195-42&shcb=3486400.0 s1.5 KiB
link.rubiconproject.com/magnite/21150.js55217.0 s855 B
/hadron.js?url=https%3A%2F%2Fwww.guinnessworldrecords.com...432000.0 s186 B
/tr/?id=1034594633413716&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms16 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.701998] map[node:map[boundingRect:map[bottom:2366 height:2129 left:0 right:412 top:237 width:412] lhId:page-20-SECTION nodeLabel:Are you ear-ing this? Australian artist surgically implanted an extra ear on to… path:2,HTML,1,BODY,2,MAIN,4,SECTION selector:body.en > main#main > section.component-wrapper snippet:<section class="component-wrapper news-content "> type:node] score:0.396656 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:201 height:141 left:-1189 right:-777 top:60 width:412] lhId:page-33-IMG nodeLabel:banner for news story path:2,HTML,1,BODY,2,MAIN,2,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,0,A,0,IMG selector:div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy snippet:<img class="lazy" src="/images/dr-howard-carousel.jpg" alt="banner for news story" data-srcd="/images/dr-howard-carousel.jpg" data-srct="/images/dr-howard-carousel.jpg" data-srcm="/images/dr-howard-carousel.jpg"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:840 height:274 left:18 right:394 top:565 width:376] lhId:page-27-ARTICLE nodeLabel:How a Paris bridge nearly collapsed under 45 tonnes of love path:2,HTML,1,BODY,2,MAIN,4,SECTION,0,DIV,0,DIV,1,A,0,ARTICLE selector:div.container > div.inline-block-wrap > a > article.news-item snippet:<article class="news-item med"> type:node] score:0.23909 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:201 height:141 left:-1601 right:-1189 top:60 width:412] lhId:page-34-IMG nodeLabel:GWR-Store path:2,HTML,1,BODY,2,MAIN,2,SECTION,0,DIV,1,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy snippet:<img class="lazy" src="/products/images/banner-with-gwr2026-homepage-1900x650.jpg" alt="GWR-Store" data-srcd="/products/images/banner-with-gwr2026-homepage-1900x650.jpg" data-srct="/products/images/banner-with-gwr2026-homepage-1900x650.jpg" data-srcm="/products/images/banner-with-gwr2026-homepage-1900x650.jpg"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1424 height:274 left:18 right:394 top:1150 width:376] lhId:page-24-ARTICLE nodeLabel:What is the strongest part of the human body? These records might surprise you! path:2,HTML,1,BODY,2,MAIN,4,SECTION,0,DIV,0,DIV,3,A,0,ARTICLE selector:div.container > div.inline-block-wrap > a > article.news-item snippet:<article class="news-item sml"> type:node] score:0.065426 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1069 height:211 left:19 right:393 top:859 width:374] lhId:page-4-IMG nodeLabel:Herbie the rabbit then and now path:2,HTML,1,BODY,2,MAIN,4,SECTION,0,DIV,0,DIV,2,A,0,ARTICLE,0,FIGURE,0,IMG selector:a > article.news-item > figure > img snippet:<img src="/news/2026/4/images/oldest-rabbit-new-thumbnail.jpg" alt="Herbie the rabbit then and now"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:536 height:42 left:29 right:383 top:495 width:354] lhId:page-31-H3 nodeLabel:Are you ear-ing this? Australian artist surgically implanted an extra ear on to… path:2,HTML,1,BODY,2,MAIN,4,SECTION,0,DIV,0,DIV,0,A,0,ARTICLE,1,HEADER,0,H3 selector:a > article.news-item > header > h3 snippet:<h3> type:node] score:0.000826 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:201 height:141 left:-1601 right:-1189 top:60 width:412] lhId:page-34-IMG nodeLabel:GWR-Store path:2,HTML,1,BODY,2,MAIN,2,SECTION,0,DIV,1,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy snippet:<img class="lazy" src="/products/images/banner-with-gwr2026-homepage-1900x650.jpg" alt="GWR-Store" data-srcd="/products/images/banner-with-gwr2026-homepage-1900x650.jpg" data-srct="/products/images/banner-with-gwr2026-homepage-1900x650.jpg" data-srcm="/products/images/banner-with-gwr2026-homepage-1900x650.jpg"> type:node]]] type:subitems]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Guinness World Records Announces First Permanent UK Attraction - image of The O… div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
www.guinnessworldrecords.com/images/london-venue-homepage-banner.png577.0 KiB548.1 KiB
GWR-Store div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
/products/images/banner-with-gwr2026-homepage-1900x650.jpg188.3 KiB161.2 KiB
Pont-des-Arts with love-locks on the railing a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/love-locks-thumbnail.png200.2 KiB160.9 KiB
Explore creative campaigns – image of a car performing a loop-the-loop article > a > div.columned-image > img.lazy
/products/images/largest-loop-the-loop-in-a-car-for-tile.jpg195.6 KiB156.5 KiB
Herbie the rabbit then and now a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/oldest-rabbit-new-thumbnail.jpg192.0 KiB152.8 KiB
Record selector screenshot article > a > div.columned-image > img.lazy
/products/images/tile-for-record-selector-homepage.jpg186.1 KiB147.1 KiB
split image of Tom with certificate and some of his tattoos a > article.news-item > figure > img
/news/2026/4/images/most-marvel-tattoos-thumbnail.jpg184.1 KiB144.8 KiB
GWR for Business We’re on a mission to show off your brilliant brand, and your… body.en > main#main > section.component-wrapper
www.guinnessworldrecords.com/images/b2b-online-records-banner.jpg320.8 KiB135.2 KiB
banner for news story div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
www.guinnessworldrecords.com/images/dr-howard-carousel.jpg146.4 KiB125.3 KiB
Split image of Saimaiti Yiming walking in his stilts and at the ceremony a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/stilts-24hr-thumbnail.jpg140.8 KiB101.5 KiB
Split image of a man lifting weight with his tongue; another man lifting weight… a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/strongest-bodypart-thumbnail.png133.1 KiB93.9 KiB
Stelarc showing off the ear on his arm a > article.news-item > figure > img
/news/2026/4/images/stelarc-ear-on-arm-header-image.jpg123.1 KiB83.8 KiB
The LEGO display in front of planet Earth a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/phm-lego-header-image.jpg119.9 KiB80.6 KiB
Explore GWR Studios - record breaker taking photograph article > a > div.columned-image > img.lazy
www.guinnessworldrecords.com/images/gwr-studios.jpg95.0 KiB55.9 KiB
Marathon runner group article > a > div.columned-image > img.lazy
www.guinnessworldrecords.com/images/marathon-runner-group-home.jpg91.1 KiB52.0 KiB
Explore case studies - group of record breakers with certificate article > a > div.columned-image > img.lazy
/products/images/view-our-case-studies-with-certificate-a...87.7 KiB48.6 KiB
Guinness World Records Kids logo article > a > div.columned-image > img.lazy
/images/guinness-world-records-kids-logo-on-purple-backgr...71.4 KiB32.3 KiB
Guinness World Records Navy Beanie- div.shopify-buy__collection-products > div.has-image > div.shopify-buy__product-img-wrapper > img.shopify-buy__product__variant-img
/s/files/1/0570/8388/7782/files/guinness-world-records-na...34.4 KiB25.3 KiB
Explore Employee engagement - group gathering article > a > div.columned-image > img.lazy
www.guinnessworldrecords.com/images/employee-engagement-home.jpg61.5 KiB22.4 KiB
Guinness World Records header#header > div.logo > a > img
www.guinnessworldrecords.com/images/og_image.jpg18.1 KiB17.1 KiB
Black Cap div.shopify-buy__collection-products > div.has-image > div.shopify-buy__product-img-wrapper > img.shopify-buy__product__variant-img
/s/files/1/0570/8388/7782/files/Black_Cap_Packshots_1_550...25.0 KiB16.8 KiB
Guinness World Records Aluminium Water Bottle-Silver div.shopify-buy__collection-products > div.has-image > div.shopify-buy__product-img-wrapper > img.shopify-buy__product__variant-img
/s/files/1/0570/8388/7782/files/Water_Bottle_1_6f4f2ce2-d...13.3 KiB8.0 KiB
Guinness World Records Ceramic Mug-White div.shopify-buy__collection-products > div.has-image > div.shopify-buy__product-img-wrapper > img.shopify-buy__product__variant-img
/s/files/1/0570/8388/7782/files/Guinness-World-_Records-O...10.8 KiB7.3 KiB

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.guinnessworldrecords.com/css/main.min.css28.5 KiB302 ms

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.8 s
URLTime Spent
guinnessworldrecords.com/755 ms
www.guinnessworldrecords.com/1.0 s
www.guinnessworldrecords.com/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Are you ear-ing this? Australian artist surgically implanted an extra ear on to… body.en > main#main > section.component-wrapper
0.397
How a Paris bridge nearly collapsed under 45 tonnes of love div.container > div.inline-block-wrap > a > article.news-item
0.239
What is the strongest part of the human body? These records might surprise you! div.container > div.inline-block-wrap > a > article.news-item
0.065
Are you ear-ing this? Australian artist surgically implanted an extra ear on to… a > article.news-item > header > h3
0.001

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 300 ms 25.5 KiB
URLTransfer SizeEst Savings
www.guinnessworldrecords.com/css/main.min.css28.0 KiB25.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.6 s 822.7 KiB
URLTransfer SizeEst Savings
go.ezodn.com/hb/dall.js?cb=195-42-156235.1 KiB173.7 KiB
/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31...187.4 KiB130.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-WW669H147.7 KiB65.9 KiB
www.googletagmanager.com/gtag/js?id=G-QBVKPTNFD0&cx=c&_slc=1168.2 KiB59.8 KiB
www.ezojs.com/identity.js101.2 KiB57.6 KiB
go.ezodn.com/detroitchicago/indy.js?cb=117&gcb=095.1 KiB54.2 KiB
go.ezodn.com/detroitchicago/portland.js?gcb=42&cb=b15a97dd2665.4 KiB49.3 KiB
go.ezodn.com/ezoic/ezorca.min.js73.3 KiB46.2 KiB
go.ezodn.com/porpoiseant/ezadloadrewarded.js?cb=1048&gcb=195-4262.5 KiB40.2 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB34.2 KiB
www.ezojs.com/ezoic/sa.min.js65.2 KiB32.4 KiB
cdn.id5-sync.com/api/1.0/id5-api.js34.1 KiB31.2 KiB
sdks.shopifycdn.com/buy-button/latest/buy-button-storefront.min.js59.5 KiB26.9 KiB
www.guinnessworldrecords.com/js/scripts.min.js33.0 KiB20.2 KiB

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
Unattributable794 ms60 ms0.0 ms
www.guinnessworldrecords.com/501 ms79 ms1.7 ms
tagan.adlightning.com/ezoic-1/op.js448 ms395 ms6.8 ms
sdks.shopifycdn.com/buy-button/latest/buy-button-storefront.min.js446 ms352 ms37 ms
www.ezojs.com/detroitchicago/columbus.js383 ms263 ms3.8 ms
client.aps.amazon-adsystem.com/publisher.js299 ms210 ms69 ms
go.ezodn.com/detroitchicago/portland.js?gcb=42&cb=b15a97dd26294 ms258 ms31 ms
/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31...277 ms228 ms47 ms
the.gatekeeperconsent.com/v2/cmp.js?v=466254 ms223 ms5.4 ms
go.ezodn.com/hb/dall.js?cb=195-42-156254 ms188 ms64 ms
www.googletagmanager.com/gtm.js?id=GTM-WW669H249 ms213 ms34 ms
www.guinnessworldrecords.com/js/jquery.js231 ms100 ms6.4 ms
www.googletagmanager.com/gtag/js?id=G-QBVKPTNFD0&cx=c&_slc=1218 ms176 ms40 ms
tagan.adlightning.com/ezoic-1/b-7abcf19-c2ad846a.js203 ms196 ms6.5 ms
www.guinnessworldrecords.com/scripts.js181 ms165 ms1.9 ms
www.ezojs.com/identity.js170 ms123 ms47 ms
www.ezojs.com/ezoic/sa.min.js140 ms115 ms21 ms
www.guinnessworldrecords.com/js/scripts.min.js138 ms104 ms8.6 ms
tagan.adlightning.com/ezoic-1/bl-0d6ee0c-93d26753.js136 ms116 ms19 ms
go.ezodn.com/detroitchicago/indy.js?cb=117&gcb=0131 ms96 ms34 ms
config.aps.amazon-adsystem.com/configs/aa05931b-5308-4ea3-95a2-adf84f4ffde4117 ms106 ms7.8 ms
secure.cdn.fastclick.net/js/pubcid/latest/pubcid.min.js116 ms93 ms22 ms
go.ezodn.com/porpoiseant/ezadloadrewarded.js?cb=1048&gcb=195-42106 ms82 ms23 ms
connect.facebook.net/en_US/fbevents.js102 ms77 ms24 ms
/signals/config/1034594633413716?v=2.9.303&r=stable&domai...96 ms82 ms15 ms
cdn.id5-sync.com/api/1.0/id5-api.js94 ms54 ms37 ms
www.google-analytics.com/analytics.js93 ms59 ms29 ms
go.ezodn.com/ezoic/ezorca.min.js83 ms55 ms24 ms
secure.cdn.fastclick.net/js/cnvr-coreid/latest/coreid.min.js80 ms67 ms13 ms
securepubads.g.doubleclick.net/tag/js/gpt.js79 ms71 ms8.1 ms
snap.licdn.com/li.lms-analytics/insight.min.js68 ms61 ms4.5 ms
secure.cdn.fastclick.net/js/cnvr-launcher/latest/launcher.min.js63 ms52 ms6.4 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation4.7 s
Other907 ms
Script Parsing & Compilation744 ms
Style & Layout479 ms
Garbage Collection161 ms
Rendering87 ms
Parse HTML & CSS47 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
www.guinnessworldrecords.com/images/london-venue-homepage-banner.png578.2 KiB
www.guinnessworldrecords.com/images/b2b-online-records-banner.jpg321.6 KiB
go.ezodn.com/hb/dall.js?cb=195-42-156235.6 KiB
www.guinnessworldrecords.com/news/2026/4/images/love-locks-thumbnail.png200.8 KiB
/products/images/largest-loop-the-loop-in-a-car-for-tile.jpg196.3 KiB
www.guinnessworldrecords.com/news/2026/4/images/oldest-rabbit-new-thumbnail.jpg192.7 KiB
/products/images/banner-with-gwr2026-homepage-1900x650.jpg189.0 KiB
/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31...187.4 KiB
/products/images/tile-for-record-selector-homepage.jpg186.8 KiB
/news/2026/4/images/most-marvel-tattoos-thumbnail.jpg184.8 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
GWR-Store div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
/products/images/banner-with-gwr2026-homepage-1900x650.jpg
banner for news story div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
www.guinnessworldrecords.com/images/dr-howard-carousel.jpg
Guinness World Records Announces First Permanent UK Attraction - image of The O… div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
www.guinnessworldrecords.com/images/london-venue-homepage-banner.png
GWR-Store div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
/products/images/banner-with-gwr2026-homepage-1900x650.jpg
banner for news story div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
www.guinnessworldrecords.com/images/dr-howard-carousel.jpg
Guinness World Records Announces First Permanent UK Attraction - image of The O… div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
www.guinnessworldrecords.com/images/london-venue-homepage-banner.png
GWR-Store div.slick-track > div.slider-holder > a.slider-holder-link > img.lazy
/products/images/banner-with-gwr2026-homepage-1900x650.jpg
Stelarc showing off the ear on his arm a > article.news-item > figure > img
/news/2026/4/images/stelarc-ear-on-arm-header-image.jpg
Pont-des-Arts with love-locks on the railing a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/love-locks-thumbnail.png
Herbie the rabbit then and now a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/oldest-rabbit-new-thumbnail.jpg
Split image of a man lifting weight with his tongue; another man lifting weight… a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/strongest-bodypart-thumbnail.png
split image of Tom with certificate and some of his tattoos a > article.news-item > figure > img
/news/2026/4/images/most-marvel-tattoos-thumbnail.jpg
Split image of Saimaiti Yiming walking in his stilts and at the ceremony a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/stilts-24hr-thumbnail.jpg
The LEGO display in front of planet Earth a > article.news-item > figure > img
www.guinnessworldrecords.com/news/2026/4/images/phm-lego-header-image.jpg
Explore creative campaigns – image of a car performing a loop-the-loop article > a > div.columned-image > img.lazy
/products/images/largest-loop-the-loop-in-a-car-for-tile.jpg
Explore Employee engagement - group gathering article > a > div.columned-image > img.lazy
www.guinnessworldrecords.com/images/employee-engagement-home.jpg
Explore GWR Studios - record breaker taking photograph article > a > div.columned-image > img.lazy
www.guinnessworldrecords.com/images/gwr-studios.jpg
Explore case studies - group of record breakers with certificate article > a > div.columned-image > img.lazy
/products/images/view-our-case-studies-with-certificate-a...
Guinness World Records Kids logo article > a > div.columned-image > img.lazy
/images/guinness-world-records-kids-logo-on-purple-backgr...
Marathon runner group article > a > div.columned-image > img.lazy
www.guinnessworldrecords.com/images/marathon-runner-group-home.jpg
Record selector screenshot article > a > div.columned-image > img.lazy
/products/images/tile-for-record-selector-homepage.jpg
Guinness World Records div.logo_main > div.logo > a > img
www.guinnessworldrecords.com/images/logo.png
Guinness World Records header#header > div.logo > a > img
www.guinnessworldrecords.com/images/og_image.jpg

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 11 user timings
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 290 ms
●Server Backend Latencies 120 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 40 ms
○INP breakdown
○LCP request discovery
○Avoid non-composited animations
95

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
EN div.menu > div.nav-links > a#globe > span.two-letter-iso-code
Are you ear-ing this? Australian artist surgically implanted an extra ear on to… a > article.news-item > header > h3
How a Paris bridge nearly collapsed under 45 tonnes of love a > article.news-item > header > h3
Lucky rabbit Herbie becomes oldest of his species after doubling life expectancy a > article.news-item > header > h3
What is the strongest part of the human body? These records might surprise you! a > article.news-item > header > h3
Marvel obsessive breaks record by covering body in over 60 tattoos of iconic ch… a > article.news-item > header > h3
These stilts were made for walkin’: Chinese man travelled 50 miles in sky-high … a > article.news-item > header > h3
Bricks and spaceships: a ‘Project Hail Mary’ LEGO minifig has made it to space a > article.news-item > header > h3
More news section.component-wrapper > div.container > div.fullwidth-cta-holder > a.btn
Creative campaigns a > div.columned-text > div.container > h4.columned-text-title
Employee engagement a > div.columned-text > div.container > h4.columned-text-title
GWR Studios a > div.columned-text > div.container > h4.columned-text-title
View our case studies a > div.columned-text > div.container > h4.columned-text-title
Visit business solutions section.component-wrapper > div.container > div.cta-holder > a.btn
Shop Now section.component-wrapper > div.container > div.fullwidth-cta-holder > a.btn
USING THIS SITE footer#footer > div.container > section.footer-section > h5
CONTACT US footer#footer > div.container > section.footer-section > h5

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Creative campaigns a > div.columned-text > div.container > h4.columned-text-title
Guinness World Records Kids a > div.columned-text > div.container > h4.columned-text-title

These are opportunities to improve keyboard navigation in your application.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●All heading elements contain content.
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
81

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
AttributionReporting
snap.licdn.com/li.lms-analytics/insight.min.js
Unload event listeners are deprecated and will be removed.
ez-standalone.js
Topics
go.ezodn.com/hb/dall.js?cb=195-42-156 line 137, col 1151
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
92

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Vendor List div#ez-cookie-dialog-wrapper > div#ez-cookie-dialog > div#secondary-links > a#ez-vendors

To appear in search results, crawlers need access to your app.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
○Document has a valid `rel=canonical`

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