Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

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.

Request	Cache TTL	Transfer Size
widget.reviews.io/modern-widgets/ugc.js	7200.0 s	150.6 KiB
consent.cookiebot.com/uc.js	786.0 s	27.2 KiB
/awin-shopify-integration-code.js?aid=40446&v=shopifyApp_...	0.0 ms	17.9 KiB
assets.reviews.io/css/widgets/ugc-widget.css	14400.0 s	19.9 KiB
carrera-toys.com/apps/awin/40446.js	600.0 s	14.7 KiB
assets.reviews.io/iconfont/reviewsio-icons/fonts/reviewsio-font.woff2?pdx2p6	14400.0 s	13.9 KiB
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js	604800.0 s	43.2 KiB
static.klaviyo.com/onsite/js/TbEZ9H/klaviyo.js?company_id=TbEZ9H	1.0 s	2.8 KiB
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...	300.0 s	2.4 KiB
assets.reviews.io/iconfont/reviewsio-icons/style.css	14400.0 s	2.0 KiB
assets.reviews.io/img/all-global-assets/icons/icon-insta--md.svg	14400.0 s	1.2 KiB
shop.app/checkouts/internal/preloads.js?locale=de-FR&shop_id=94410375507	60.0 s	551 B
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css	604800.0 s	5.1 KiB

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.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
assets.reviews.io/iconfont/reviewsio-icons/fonts/reviewsio-font.woff2?pdx2p6	25 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:3.54 source:map[column:27 line:1479 type:source-location url:https://carrera-toys.com/de-eu urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:3.54 source:map[column:76 line:1479 type:source-location url:https://carrera-toys.com/de-eu urlProvider:network]] map[reflowTime:5.566 source:map[column:135 line:2356 type:source-location url:https://carrera-toys.com/de-eu urlProvider:network]] map[reflowTime:32.98 source:map[column:35 line:4178 type:source-location url:https://carrera-toys.com/de-eu urlProvider:network]] map[reflowTime:14.639 source:map[column:35 line:5543 type:source-location url:https://carrera-toys.com/de-eu urlProvider:network]] map[reflowTime:40.495 source:map[type:text value:[unattributed]]] map[reflowTime:1.379 source:map[column:4766 line:12 type:source-location url:https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js urlProvider:network]] map[reflowTime:0.533 source:map[column:10640 line:12 type:source-location url:https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js urlProvider:network]] map[reflowTime:27.819 source:map[column:31 line:6856 type:source-location url:https://carrera-toys.com/de-eu urlProvider:network]] map[reflowTime:0.942 source:map[column:49615 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js urlProvider:network]] map[reflowTime:0.319 source:map[column:50335 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js urlProvider:network]] map[reflowTime:0.362 source:map[column:50393 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js urlProvider:network]] map[reflowTime:0.169 source:map[column:50457 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js urlProvider:network]] map[reflowTime:0.284 source:map[column:51395 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js urlProvider:network]]]

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.

	URL	Resource Size	Est Savings
Review photo uploaded by carrera.official `div.MediaGalleryWidget__item > div.MediaGalleryWidget__media > div.media__container > img.media__source`	media.reviews.co.uk/instagram-image/1080?src=DKU0JF5hYYF&height=0&width=1080	310.3 KiB	244.3 KiB
Review photo uploaded by carrera.official `div.MediaGalleryWidget__item > div.MediaGalleryWidget__media > div.media__container > img.media__source`	media.reviews.co.uk/instagram-image/1080?src=DKKWFqqtA3M&height=0&width=1080	212.3 KiB	146.3 KiB
Review photo uploaded by carrera.official `div.MediaGalleryWidget__item > div.MediaGalleryWidget__media > div.media__container > img.media__source`	media.reviews.co.uk/instagram-image/1080?src=DJ132oZN_AG&height=0&width=1080	152.1 KiB	99.2 KiB
Review photo uploaded by carrera.official `div.MediaGalleryWidget__item > div.MediaGalleryWidget__media > div.media__container > img.media__source`	media.reviews.co.uk/instagram-image/1080?src=DJJZA8jtZIv&height=0&width=1080	121.6 KiB	79.3 KiB
2,4GHz RC Fußball Set Modell Bundesliga `product-item.product-item > div.product-item__image-wrapper > a.product-item__aspect-ratio > img.product-item__primary-image`	/cdn/shop/files/Kein_Titel_2000_x_2000_px_2000_x_1500_px_...	109.5 KiB	79.1 KiB
Digital 124 `a.collection-card > div.collection-card-image-wrapper > picture > img.collection-list-image`	/cdn/shop/collections/124-ferrari-header-bild-collection....	80.5 KiB	71.9 KiB
Review photo uploaded by carrera.official `div.MediaGalleryWidget__item > div.MediaGalleryWidget__media > div.media__container > img.media__source`	media.reviews.co.uk/instagram-image/1080?src=DJ_faT8N3ef&height=0&width=1080	92.3 KiB	60.2 KiB
Digital 132 `a.collection-card > div.collection-card-image-wrapper > picture > img.collection-list-image`	/cdn/shop/collections/digital_132_headerbild.png?v=175440...	62.0 KiB	55.4 KiB
2,4GHz Carrera RC Soccer Set - World Championship `product-item.product-item > div.product-item__image-wrapper > a.product-item__aspect-ratio > img.product-item__primary-image`	/cdn/shop/files/370430045_15_HIGH_2ab553fd-a2fc-48a7-b254...	76.1 KiB	45.4 KiB
Landingpage \| CARS > Action \| RC \| Pimcore-Import `a.collection-card > div.collection-card-image-wrapper > picture > img.collection-list-image`	/cdn/shop/collections/headerbild_action_ferngesteuert_tur...	48.8 KiB	43.7 KiB
Profi RC `a.collection-card > div.collection-card-image-wrapper > picture > img.collection-list-image`	/cdn/shop/collections/profi_rc_headerbild.png?v=175447734...	48.8 KiB	43.6 KiB
Ford Mustang GT3 "Ford Performance, No.64" `product-item.product-item > div.product-item__image-wrapper > a.product-item__aspect-ratio > img.product-item__primary-image`	carrera-toys.com/cdn/shop/files/600478_800x.webp?v=1754380506	74.3 KiB	43.2 KiB
Oracle Red Bull Racing RB20 "M.Verstappen, No.1", Silverstone 2024 - SPECIAL ED… `product-item.product-item > div.product-item__image-wrapper > a.product-item__aspect-ratio > img.product-item__primary-image`	/cdn/shop/files/20032048M.VerstappenNo.1Silverstone2024Sp...	111.0 KiB	39.8 KiB
Nintendo Mario Kart `a.collection-card > div.collection-card-image-wrapper > picture > img.collection-list-image`	/cdn/shop/collections/mario_rc_headerbild.png?v=175440774...	44.0 KiB	39.3 KiB
Banner 2,4GHz RC Fußball Set Modell Bundesliga `slide-show-item#block-template--25508884414803__slideshow_new_gcRkCq-slide_8waYqj > div.slideshow__slide-inner > div.slideshow__image-wrapper > img.slideshow__image`	/cdn/shop/files/Banner_2_4GHz_RC_Fu_ball_Set_Modell_Bunde...	79.1 KiB	36.4 KiB
Carrera Themenwelten `div.container > div.wrapper-cstm-section-top > div.image-wrap-cstm-section > img`	carrera-toys.com/cdn/shop/files/Headerbild_Collectionpage.png?v=1754326392	62.7 KiB	35.0 KiB
Hybrid Rennbahnen `a.collection-card > div.collection-card-image-wrapper > picture > img.collection-list-image`	carrera-toys.com/cdn/shop/files/Hybrid-controller.png?v=1761122588&width=1600	30.6 KiB	27.0 KiB
Disney Pixar Cars `product-item.product-item > div.product-item__image-wrapper > a.product-item__aspect-ratio > img.product-item__primary-image`	carrera-toys.com/cdn/shop/files/p-Mng6Oj-634432_400x.png?v=1755683383	43.9 KiB	24.3 KiB
Race of the Champions `product-item.product-item > div.product-item__image-wrapper > a.product-item__aspect-ratio > img.product-item__primary-image`	/cdn/shop/files/634452_1772x-removebg-preview_400x.png?v=...	43.8 KiB	24.3 KiB
Devil Drivers `product-item.product-item > div.product-item__image-wrapper > a.product-item__aspect-ratio > img.product-item__primary-image`	/cdn/shop/files/p-ORYKLe-529151_ea7dc3e5-25b1-4227-a142-4...	51.6 KiB	21.3 KiB
Carrera Hybrid Controller `product-item.product-item > div.product-item__image-wrapper > a.product-item__aspect-ratio > img.product-item__primary-image`	carrera-toys.com/cdn/shop/files/Hybrid-controller_800x.png?v=1761122588	26.1 KiB	15.6 KiB
div.limited-actions__content > a.limited-actions__link > div.limited-actions__image-row > img.limited-actions__image `div.limited-actions__content > a.limited-actions__link > div.limited-actions__image-row > img.limited-actions__image`	/cdn/shop/files/aktion_produktlaunch_gratis_auto_a9f76da0...	57.7 KiB	14.5 KiB
Review photo uploaded by carrera.official `div.MediaGalleryWidget__item > div.MediaGalleryWidget__media > div.media__container > img.media__source`	media.reviews.co.uk/instagram-image/1080?src=DKjNkVlMUpg&height=0&width=1080	57.7 KiB	12.5 KiB
Devil Drivers `product-item.product-item > div.product-item__image-wrapper > a.product-item__aspect-ratio > img.product-item__primary-image`	/cdn/shop/files/p-ORYKLe-529151_ea7dc3e5-25b1-4227-a142-4...	31.9 KiB	12.3 KiB
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`	carrera-toys.com/cdn/shop/files/icon_exclusives_250x.png?v=1754409412	12.2 KiB	8.7 KiB
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`	/cdn/shop/files/mario_icon_55168b78-179a-4394-8ec0-37d9e8...	11.3 KiB	7.7 KiB
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`	/cdn/shop/files/f1_icon_7d03967f-d898-4bf2-a954-e68dd7035...	11.1 KiB	7.6 KiB
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`	carrera-toys.com/cdn/shop/files/mario_icon_2_250x.png?v=1763645797	9.7 KiB	6.4 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-14-IMG

nodeLabel: Banner 2,4GHz RC Fußball Set Modell Bundesliga

path: 1,HTML,1,BODY,35,DIV,1,DIV,2,SECTION,0,DIV,0,DIV,0,DIV,0,A,0,SLIDE-SHOW-ITEM,0,DIV,1,DIV,0,IMG

selector: slide-show-item#block-template--25508884414803__slideshow_new_gcRkCq-slide_8waYqj > div.slideshow__slide-inner > div.slideshow__image-wrapper > img.slideshow__image

snippet: <img src="https://carrera-toys.com/cdn/shop/files/Banner_2_4GHz_RC_Fu_ball_Set_Model…" alt="Banner 2,4GHz RC Fußball Set Modell Bundesliga" srcset="//carrera-toys.com/cdn/shop/files/Banner_2_4GHz_RC_Fu_ball_Set_Modell_Bund…" width="3000" height="3000" loading="eager" draggable="false" class="slideshow__image" sizes="100vw">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.

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.

URL	Transfer Size	Duration
ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js	30.4 KiB	1.4 s
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css	15.5 KiB	1.2 s
carrera-toys.com/cdn/shop/t/4/assets/item.css?v=43154349694032095471776764252	4.1 KiB	152 ms
/cdn/shopifycloud/portable-wallets/latest/accelerated-che...	2.4 KiB
carrera-toys.com/cdn/shop/t/4/assets/header.css?v=70640564368020689141776764252	3.7 KiB
/extensions/019e071f-c400-7d24-a6ed-a648391a3dd2/formbuil...	7.2 KiB	333 ms
/extensions/019dd908-0649-7388-9fae-ca29d7fdfac4/orbe-geo...	5.8 KiB	817 ms
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js	43.2 KiB	902 ms
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css	5.1 KiB	752 ms

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

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: 883 ms

URL	Time Spent
carrera-toys.com/	883 ms
carrera-toys.com/de-eu	0.0 ms

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

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

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 12.7 KiB

URL	Transfer Size	Est Savings
.product-item.pid_10014291722579 .product-item__cta-wrapper { pointer-events: none !important; … } …	4.9 KiB	4.3 KiB
carrera-toys.com/cdn/shop/t/4/assets/item.css?v=43154349694032095471776764252	4.1 KiB	3.8 KiB
/extensions/019e07f9-107f-7e4e-9004-5549bb8fcd3c/swym-rel...	12.4 KiB	2.5 KiB
/cdn/shop/t/4/assets/limited-action-accordion.css?v=69690...	2.5 KiB	2.2 KiB

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: 150 ms 73.2 KiB

URL	Transfer Size	Est Savings
carrera-toys.com/cdn/shop/t/4/assets/theme.css?v=167215115724298709711776764253	32.9 KiB	29.1 KiB
assets.reviews.io/css/widgets/ugc-widget.css	19.6 KiB	18.4 KiB
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css	14.9 KiB	14.9 KiB
	13.3 KiB	10.9 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: 810 ms 396.3 KiB

URL	Transfer Size	Est Savings
widget.reviews.io/modern-widgets/ugc.js	146.2 KiB	63.2 KiB
/extensions/019e07f9-107f-7e4e-9004-5549bb8fcd3c/swym-rel...	74.6 KiB	59.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-WK5NW5WC	174.9 KiB	57.9 KiB
/onsite/js/build-preview/commit-b1cdef0395467d0ad1abcaf43...	52.5 KiB	41.2 KiB
carrera-toys.com/cdn/wpm/b81a24193wb0bf602apf85b30fcm71c6b379m.js	62.5 KiB	33.0 KiB
/extensions/019d8b04-dc16-72dc-a957-0e51fcce6fee/transcy-...	45.0 KiB	31.4 KiB
carrera-toys.com/cdn/shop/t/4/assets/theme.js?v=113927651260596923691776764253	37.8 KiB	30.3 KiB
/uc.js?cbid=ce334302-3e60-47dd-9200-162f076aaa36&implemen...	29.2 KiB	28.6 KiB
/ce334302-3e60-47dd-9200-162f076aaa36/cc.js?renew=false&r...	113.4 KiB	25.7 KiB
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js	43.0 KiB	25.3 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.

URL	Total CPU Time	Script Evaluation	Script Parse
carrera-toys.com/de-eu	5.4 s	580 ms	42 ms
Unattributable	1.3 s	49 ms	0.0 ms
/ce334302-3e60-47dd-9200-162f076aaa36/cc.js?renew=false&r...	468 ms	170 ms	23 ms
carrera-toys.com/cdn/shop/t/4/assets/theme.js?v=113927651260596923691776764253	430 ms	202 ms	13 ms
widget.reviews.io/modern-widgets/ugc.js	415 ms	338 ms	48 ms
www.googletagmanager.com/gtm.js?id=GTM-WK5NW5WC	244 ms	203 ms	40 ms
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js	225 ms	26 ms	9.6 ms
static.klaviyo.com/onsite/js/1011.0ab7438f38097e529f79.js	157 ms	84 ms	1.5 ms
ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js	153 ms	24 ms	6.2 ms
/onsite/js/build-preview/commit-b1cdef0395467d0ad1abcaf43...	138 ms	59 ms	3.9 ms
/onsite/js/build-preview/commit-b1cdef0395467d0ad1abcaf43...	123 ms	105 ms	16 ms
consent.cookiebot.com/uc.js	120 ms	104 ms	7.6 ms
carrera-toys.com/cdn/wpm/b81a24193wb0bf602apf85b30fcm71c6b379m.js	102 ms	63 ms	13 ms
/extensions/019e07f9-107f-7e4e-9004-5549bb8fcd3c/swym-rel...	95 ms	34 ms	26 ms
/cdn/s/trekkie.storefront.82900183b05ff23f8455639d7eb513d...	91 ms	83 ms	7.3 ms
/extensions/019d8b04-dc16-72dc-a957-0e51fcce6fee/transcy-...	87 ms	70 ms	12 ms
carrera-toys.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-3.3.1.min.js	82 ms	68 ms	4.0 ms
/cdn/shopifycloud/storefront/assets/storefront/load_featu...	64 ms	62 ms	1.4 ms
/extensions/019dd908-0649-7388-9fae-ca29d7fdfac4/orbe-geo...	58 ms	36 ms	5.4 ms
/cdn/shopifycloud/storefront/assets/shop_events_listener-...	57 ms	54 ms	1.2 ms
carrera-toys.com/cdn/shopifycloud/shop-js/modules/v2/chunk.hooks_BPe0V1kQ.esm.js	52 ms	49 ms	0.2 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.

Category	Time Spent
Other	3.6 s
Script Evaluation	2.7 s
Style & Layout	2.1 s
Rendering	1.1 s
Parse HTML & CSS	476 ms
Script Parsing & Compilation	352 ms

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 23.2 KiB

URL	Transfer Size	Est Savings
/extensions/019e07f9-107f-7e4e-9004-5549bb8fcd3c/swym-rel...	74.6 KiB	14.8 KiB
/awin-shopify-integration-code.js?aid=40446&v=shopifyApp_...	17.6 KiB	3.9 KiB
/extensions/019db4fe-3f44-7c9b-b76e-5e9bd2fb9dec/reviews-...	6.4 KiB	2.5 KiB
/extensions/019e07f9-107f-7e4e-9004-5549bb8fcd3c/swym-rel...	4.4 KiB	2.0 KiB

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.

URL	Transfer Size
media.reviews.co.uk/instagram-image/1080?src=DKaCqvBOr6D&height=0&width=1080	311.0 KiB
media.reviews.co.uk/instagram-image/1080?src=DKU0JF5hYYF&height=0&width=1080	311.0 KiB
media.reviews.co.uk/instagram-image/1080?src=DJmTpYdsTLa&height=0&width=1080	282.5 KiB
media.reviews.co.uk/instagram-image/1080?src=DNI58thuh8H&height=0&width=1080	267.1 KiB
media.reviews.co.uk/instagram-image/1080?src=DMA2jGJOxOD&height=0&width=1080	232.8 KiB
media.reviews.co.uk/instagram-image/1080?src=DJUSPICSNoT&height=0&width=1080	217.8 KiB
media.reviews.co.uk/instagram-image/1080?src=DKKWFqqtA3M&height=0&width=1080	213.1 KiB
media.reviews.co.uk/instagram-image/1080?src=DJb3lUFNJU2&height=0&width=1080	190.4 KiB
media.reviews.co.uk/instagram-image/1080?src=DLsT3HyMPN6&height=0&width=1080	189.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-WK5NW5WC	175.2 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
Carrera Themenwelten `div.container > div.wrapper-cstm-section-top > div.image-wrap-cstm-section > img`	carrera-toys.com/cdn/shop/files/Headerbild_Collectionpage.png?v=1754326392
div.limited-actions__content > a.limited-actions__link > div.limited-actions__image-row > img.limited-actions__image `div.limited-actions__content > a.limited-actions__link > div.limited-actions__image-row > img.limited-actions__image`	/cdn/shop/files/aktion_produktlaunch_gratis_auto_a9f76da0...
Image `div.outer-svg-block-div > div.theme-world--block > div.container-fluid > img`	carrera-toys.com/cdn/shop/files/Picture_12.png?v=1751821807

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

●Layout shift culprits

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●User Timing marks and measures 3 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 16 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 40 ms

●Server Backend Latencies 460 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 30 ms

○INP breakdown

○Avoid large layout shifts

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.

ARIA

ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
Close `div#swym-storefront-extention-render-container > swym-storefront-layout.swym-storefront-layout-root-component > swym-storefront-layout-as-drawer#swym-storefront-layout > div#swym-storefront-layout-container`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Deutsch `md-footer-selector__form.notranslate > form#md-footer-selector__form__id > div.md-modal__formContent__select > button#md-form__select__language--footer`

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.header__wrapper > div.header__secondary-links > div.header__icon-list > a.swym-wishlist `div.header__wrapper > div.header__secondary-links > div.header__icon-list > a.swym-wishlist`
div.limited-actions__grid > div.limited-actions__card > div.limited-actions__content > a.limited-actions__link `div.limited-actions__grid > div.limited-actions__card > div.limited-actions__content > a.limited-actions__link`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

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
Show details `div#CybotCookiebotDialogBody > div.CybotCookiebotDialogBodyBottomWrapper > div#CybotCookiebotDialogBodyEdgeMoreDetails > a#CybotCookiebotDialogBodyEdgeMoreDetailsLink`

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
CARRERA CLUB `div.container > header.section__header > div.text-container > h3.heading`

These are opportunities to improve keyboard navigation in your application.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta `head > meta`

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Go to slide 3 `div.swiper > div.swiper-arrow-wrapper > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 4 `div.swiper > div.swiper-arrow-wrapper > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 5 `div.swiper > div.swiper-arrow-wrapper > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 8 `div.swiper > div.swiper-arrow-wrapper > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 9 `div.swiper > div.swiper-arrow-wrapper > div.swiper-pagination > span.swiper-pagination-bullet`
Go to slide 10 `div.swiper > div.swiper-arrow-wrapper > div.swiper-pagination > span.swiper-pagination-bullet`

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
0 `div.header__wrapper > div.header__secondary-links > div.header__icon-list > a.header__icon-wrapper`

○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

●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Form elements have associated labels

●`button`, `link`, and `menuitem` elements have accessible names

●ARIA attributes are used as specified for the element's role

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●`[lang]` attributes have a valid value

●Document has a main landmark.

●Deprecated ARIA roles were not used

●All heading elements contain content.

●Image elements do not have `[alt]` attributes that are redundant text.

●Identical links have the same purpose.

○`[accesskey]` values are unique

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○`[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

○`<frame>` or `<iframe>` elements have a title

○`<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

○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

○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.

○`<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

○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.

Best Practices

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
carrera-toys.com/cdn/shop/t/4/assets/theme.js?v=113927651260596923691776764253 line 45, col 5658	`TypeError: Cannot read properties of undefined (reading 'parentElement') at TabsNav.connectedCallback (https://carrera-toys.com/cdn/shop/t/4/assets/theme.js?v=113927651260596923691776764253:46:5659) at https://carrera-toys.com/cdn/shop/t/4/assets/theme.js?v=113927651260596923691776764253:46:8314 at https://carrera-toys.com/cdn/shop/t/4/assets/theme.js?v=113927651260596923691776764253:142:3743`

●Uses HTTPS

●Avoids deprecated APIs

●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 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 DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

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.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`
div.story-item > a.story-link > div.image-wrapper > img `div.story-item > a.story-link > div.image-wrapper > img`

Format your HTML in a way that enables crawlers to better understand your app’s content.

○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

●Links are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`