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.

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:0.34230700000000003] map[node:map[boundingRect:map[bottom:1088 height:24 left:16 right:396 top:1064 width:380] lhId:page-19-H2 nodeLabel:Top Destinations path:1,HTML,1,BODY,0,DIV,7,DIV,2,MAIN,9,DIV,0,DIV,0,DIV,0,DIV,0,H2 selector:div._container_cofew_337 > div._headerContainer_1qaxl_325 > div > h2._title_1p4uj_325 snippet:<h2 class="_title_1p4uj_325 _shelfTitle_ws69v_321 _alignCenter_ws69v_327 _title2_1p4u…"> type:node] score:0.217663 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:836 height:20 left:32 right:380 top:816 width:348] lhId:page-17-DIV nodeLabel:Don't have an account yet? Sign up path:1,HTML,1,BODY,0,DIV,7,DIV,2,MAIN,6,DIV,0,DIV,1,DIV,1,DIV selector:div._bannerContainer_l1yhc_326 > div._bannerContainer_1x5om_325 > div._bannerWrapper_1x5om_331 > div._accountPromptText_1x5om_348 snippet:<div class="_accountPromptText_1x5om_348"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1964 height:24 left:0 right:412 top:1940 width:412] lhId:page-18-DIV nodeLabel:See all attractions path:1,HTML,1,BODY,0,DIV,7,DIV,2,MAIN,14,DIV selector:div#app > div._pageContainer_1yids_5 > main#content > div._topAttractionLink_mop2o_326 snippet:<div class="_topAttractionLink_mop2o_326"> type:node] score:0.124644 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:836 height:20 left:32 right:380 top:816 width:348] lhId:page-17-DIV nodeLabel:Don't have an account yet? Sign up path:1,HTML,1,BODY,0,DIV,7,DIV,2,MAIN,6,DIV,0,DIV,1,DIV,1,DIV selector:div._bannerContainer_l1yhc_326 > div._bannerContainer_1x5om_325 > div._bannerWrapper_1x5om_331 > div._accountPromptText_1x5om_348 snippet:<div class="_accountPromptText_1x5om_348"> type:node]]] type:subitems]]]

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

items: [map[reflowTime:62.55 source:map[type:text value:[unattributed]]] map[reflowTime:0.602 source:map[column:463 line:32 type:source-location url:https://www.cdn-net.com/cc.js?sid=7400bfc633aece5a&ts=1776814996056&namespace=advc urlProvider:network]] map[reflowTime:3.646 source:map[column:219 line:5 type:source-location url:https://www.cdn-net.com/cc.js?sid=7400bfc633aece5a&ts=1776814996056&namespace=advc urlProvider:network]] map[reflowTime:171.502 source:map[column:364 line:6 type:source-location url:https://www.cdn-net.com/cc.js?sid=7400bfc633aece5a&ts=1776814996056&namespace=advc urlProvider:network]] map[reflowTime:1.131 source:map[column:425 line:95 type:source-location url:https://www.cdn-net.com/cc.js?sid=7400bfc633aece5a&ts=1776814996056&namespace=advc urlProvider:network]] map[reflowTime:0.462 source:map[column:253 line:101 type:source-location url:https://www.cdn-net.com/cc.js?sid=7400bfc633aece5a&ts=1776814996056&namespace=advc 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
SUMMIT One Vanderbilt Experience Ticket `div._productCardWrapper_1mzxb_359 > a._productCard_1mzxb_359 > div._imageContainer_1mzxb_400 > img._image_1mzxb_400`	dynamic-media.tacdn.com/media/photo-o/2e/b8/3a/eb/caption.jpg?w=600&h=500&s=1	126.2 KiB	99.4 KiB
Top Rated El Yunque Rainforest & Waterslide – SmallGroup Tour `div._productCardWrapper_1mzxb_359 > a._productCard_1mzxb_359 > div._imageContainer_1mzxb_400 > img._image_1mzxb_400`	dynamic-media.tacdn.com/media/photo-o/2e/ed/91/5f/caption.jpg?w=600&h=500&s=1	113.5 KiB	86.7 KiB
Colosseum Arena Floor, Roman Forum and Palatine Hill Guided Tour `div._productCardWrapper_1mzxb_359 > a._productCard_1mzxb_359 > div._imageContainer_1mzxb_400 > img._image_1mzxb_400`	dynamic-media.tacdn.com/media/photo-o/2e/a6/46/1f/caption.jpg?w=600&h=500&s=1	99.0 KiB	72.2 KiB
Do more with Viator `main#content > div._heroShelf_fajqa_78 > div._slideWrapper_1qzqy_355 > img._slideImage_1qzqy_372`	/media/photo-o/32/f7/06/a9/caption.jpg?f=webp&w=800&h=500...	114.0 KiB	63.2 KiB
Chicago River 45-Minute Architecture Tour from Magnificent Mile `div._productCardWrapper_1mzxb_359 > a._productCard_1mzxb_359 > div._imageContainer_1mzxb_400 > img._image_1mzxb_400`	dynamic-media.tacdn.com/media/photo-o/2e/a2/4c/d6/caption.jpg?w=600&h=500&s=1	86.0 KiB	59.2 KiB
Arena Mexico during the wrestling spectacular, Mexico City. `div._row_cofew_352 > div._col_cofew_367 > div._imgContainer_1pokz_356 > img._img_1pokz_356`	dynamic-media.tacdn.com/media/photo-o/30/49/e5/e7/caption.jpg?w=400&h=300&s=1	47.5 KiB	43.8 KiB
Frida Kahlo Museum (Museo Frida Kahlo) also known as the Blue House in Mexico C… `div._row_cofew_352 > div._col_cofew_367 > div._imgContainer_1pokz_356 > img._img_1pokz_356`	dynamic-media.tacdn.com/media/photo-o/30/49/f1/94/caption.jpg?w=400&h=300&s=1	46.9 KiB	43.3 KiB
Nice scenic view of the Colosseum ruins in summer. `div._row_cofew_352 > div._col_cofew_367 > div._imgContainer_1pokz_356 > img._img_1pokz_356`	dynamic-media.tacdn.com/media/photo-o/30/8e/25/98/caption.jpg?w=400&h=300&s=1	45.1 KiB	41.5 KiB
Landscape view of Table Mountain National Park near Cape Town. `div._row_cofew_352 > div._col_cofew_367 > div._imgContainer_1pokz_356 > img._img_1pokz_356`	dynamic-media.tacdn.com/media/photo-o/32/4d/28/4b/caption.jpg?w=400&h=300&s=1	41.5 KiB	37.9 KiB
A man looks out over Moraine Lake from a mountaintop, Alberta. `div._row_cofew_352 > div._col_cofew_367 > div._imgContainer_1pokz_356 > img._img_1pokz_356`	dynamic-media.tacdn.com/media/photo-o/2f/ad/69/3e/caption.jpg?w=400&h=300&s=1	38.4 KiB	34.8 KiB
People inside Banff Gondola enjoying the views of Banff National Park. `div._row_cofew_352 > div._col_cofew_367 > div._imgContainer_1pokz_356 > img._img_1pokz_356`	dynamic-media.tacdn.com/media/photo-o/30/36/96/d3/caption.jpg?w=400&h=300&s=1	31.0 KiB	27.4 KiB
Aerial view of Icacos Island (Cayo Icacos) in Puerto Rico. `div._row_cofew_352 > div._col_cofew_367 > div._imgContainer_1pokz_356 > img._img_1pokz_356`	dynamic-media.tacdn.com/media/photo-o/2f/ab/31/9f/caption.jpg?w=400&h=300&s=1	27.8 KiB	24.1 KiB
Bison herd at Yellowstone National Park, Jackson Hole, USA `div._row_cofew_352 > div._col_cofew_367 > div._imgContainer_1pokz_356 > img._img_1pokz_356`	dynamic-media.tacdn.com/media/attractions-splice-spp-360x240/12/31/ac/92.jpg	25.5 KiB	21.4 KiB
White sandy beach with turquoise blue Caribbean water on the Culebra Island. `div._row_cofew_352 > div._col_cofew_367 > div._imgContainer_1pokz_356 > img._img_1pokz_356`	dynamic-media.tacdn.com/media/photo-o/30/4c/6c/b4/caption.jpg?w=400&h=300&s=1	22.6 KiB	18.9 KiB
div > a > div._container_1pmcc_334 > img._image_1pmcc_321 `div > a > div._container_1pmcc_334 > img._image_1pmcc_321`	/orion/images/homepage/top-destinations/TopDestinations-R...	33.6 KiB	15.1 KiB
div > a > div._container_1pmcc_334 > img._image_1pmcc_321 `div > a > div._container_1pmcc_334 > img._image_1pmcc_321`	/orion/images/homepage/top-destinations/TopDestinations-L...	26.8 KiB	8.3 KiB
div > a > div._container_1pmcc_334 > img._image_1pmcc_321 `div > a > div._container_1pmcc_334 > img._image_1pmcc_321`	/orion/images/homepage/top-destinations/TopDestinations-W...	26.3 KiB	7.7 KiB
Don't have an account yet? Sign up `div._bannerContainer_l1yhc_326 > div._bannerContainer_1x5om_325 > div._bannerWrapper_1x5om_331 > div._accountPromptText_1x5om_348`	/captcha/assets/set/ab2ad50ac42fc00245d3ed94ab56dce80d4c0...	8.8 KiB	7.1 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.

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

value: No additional origins are good candidates for preconnecting

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
/ESWViatorMessagingWebU1721722220141/assets/styles/salesf...	26.0 s	102.0 KiB
fbauth.viator.com/__/auth/iframe.js	1800.0 s	90.1 KiB
dd.viator.com/tags.js	3600.0 s	39.4 KiB
/ESWViatorMessagingWebU1721722220141/assets/js/bootstrap....	60.0 s	26.2 KiB
beacon.riskified.com/?shop=tripadvisor&sid=6ce8eab9-f21a-48cb-83bd-310a4637ab22	600.0 s	17.5 KiB
static.captcha-delivery.com/common/fonts/roboto/roboto.woff2	0.0 ms	15.8 KiB
ct.captcha-delivery.com/c.js	0.0 ms	14.8 KiB
/captcha/assets/set/ab2ad50ac42fc00245d3ed94ab56dce80d4c0...	0.0 ms	9.1 KiB
/captcha/assets/set/ab2ad50ac42fc00245d3ed94ab56dce80d4c0...	0.0 ms	9.1 KiB
/SIE/?Q_ZID=ZN_eDug1orOE1Jz3HU	3600.0 s	4.6 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	604800.0 s	35.9 KiB
/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENT...	604800.0 s	30.9 KiB
/ESWViatorMessagingWebU1721722220141/assets/styles/bootst...	57.0 s	3.0 KiB
/ESWViatorMessagingWebU1721722220141/webruntime/framework...	1944348.0 s	29.6 KiB
/ESWViatorMessagingWebU1721722220141/assets/js/inert.min.js	50.0 s	2.8 KiB
/dxjsmodule/37.7ea1ffe71ad8c0799cc1.chunk.js?Q_CLIENTVERS...	604800.0 s	18.6 KiB
/captcha/assets/tpl/6dc485c0c428c35b53577b146dc6f9179f55e...	0.0 ms	1.8 KiB
/ESWViatorMessagingWebU1721722220141/assets/js/sitecontex...	12.0 s	1.6 KiB
/dxjsmodule/2.c77bfb664ac5163c3679.chunk.js?Q_CLIENTVERSI...	604800.0 s	14.0 KiB
/dxjsmodule/0.afc70b56ad665706f2d1.chunk.js?Q_CLIENTVERSI...	604800.0 s	10.0 KiB
static.captcha-delivery.com/common/fonts/roboto/font-face.css	0.0 ms	898 B
/ESWViatorMessagingWebU1721722220141/assets/styles/embedd...	26.0 s	770 B
/dxjsmodule/4.d5fdf4d261eebac361ea.chunk.js?Q_CLIENTVERSI...	604800.0 s	7.3 KiB
/dxjsmodule/1.bc67e778235741631577.chunk.js?Q_CLIENTVERSI...	604800.0 s	7.1 KiB
/dxjsmodule/13.9b36a5a15531a1dbe7a1.chunk.js?Q_CLIENTVERS...	604800.0 s	7.0 KiB
/dxjsmodule/3.f048ec50c55b1ef46009.chunk.js?Q_CLIENTVERSI...	604800.0 s	6.4 KiB
/dxjsmodule/39.cb1671aab3326ef58bc7.chunk.js?Q_CLIENTVERS...	604800.0 s	3.0 KiB
/dxjsmodule/16.8828f705161f0920b6ec.chunk.js?Q_CLIENTVERS...	604800.0 s	2.4 KiB
/dxjsmodule/43.0c725a97839d486f5d59.chunk.js?Q_CLIENTVERS...	604800.0 s	2.3 KiB
/img/image-l.gif?t=17768149944700.08424314117769749&c=0kl...	0.0 ms	207 B
/img/image-l.gif?t=17768149948070.2039920099654593&c=0kl4...	0.0 ms	206 B
/img/image-l.gif?t=17768149949190.7677956144118906&c=0kl4...	0.0 ms	206 B
/img/image-l.gif?t=17768149950300.8916652094996497&c=0kl4...	0.0 ms	206 B
/img/image-l.gif?t=17768149951400.9927789982942602&c=0kl4...	0.0 ms	206 B
/dxjsmodule/7.f7df015b06d8a90ce822.chunk.js?Q_CLIENTVERSI...	604800.0 s	1.4 KiB
static.captcha-delivery.com/common/fonts/roboto/roboto.woff2	0.0 ms	0 B
/captcha/assets/tpl/6dc485c0c428c35b53577b146dc6f9179f55e...	0.0 ms	0 B
static.captcha-delivery.com/common/fonts/roboto/font-face.css	0.0 ms	0 B

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
static.captcha-delivery.com/common/fonts/roboto/roboto.woff2	5.0 ms

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
cache.vtrcdn.com/orion/react/client/css/29fed0f3ccd99968.css	82.9 KiB	452 ms
cache.vtrcdn.com/orion/react/client/css/2af0d3e466bed932.css	1.3 KiB
cache.vtrcdn.com/orion/react/client/css/e8c2d6574f164f53.css	540 B
cache.vtrcdn.com/orion/react/client/css/c982b74f0d16f0e0.css	731 B
cache.vtrcdn.com/orion/react/client/css/305eb70ba0502158.css	422 B
cache.vtrcdn.com/orion/react/client/css/434b77f6d95297b5.css	803 B	151 ms
cache.vtrcdn.com/orion/react/client/css/54172ba171009767.css	564 B
cache.vtrcdn.com/orion/react/client/css/b2940411afae0d23.css	1.3 KiB
cache.vtrcdn.com/orion/react/client/css/276aab3cf19f0e3b.css	729 B
cache.vtrcdn.com/orion/react/client/css/4a12454c3a1c2958.css	1.2 KiB
cache.vtrcdn.com/orion/react/client/css/c841c042d10ddd45.css	295 B
cache.vtrcdn.com/orion/react/client/css/6501790df42ea0de.css	2.7 KiB
cache.vtrcdn.com/orion/react/client/css/5608616e4fc6f3a1.css	1.1 KiB
cache.vtrcdn.com/orion/react/client/css/a1c3de1e35708dd3.css	2.3 KiB	760 ms

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: 788 ms

URL	Time Spent
viator.com/	788 ms
www.viator.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.

Element	Layout shift score
Top Destinations `div._container_cofew_337 > div._headerContainer_1qaxl_325 > div > h2._title_1p4uj_325`	0.218
See all attractions `div#app > div._pageContainer_1yids_5 > main#content > div._topAttractionLink_mop2o_326`	0.125

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 77.1 KiB

URL	Transfer Size	Est Savings
cache.vtrcdn.com/orion/react/client/css/29fed0f3ccd99968.css	82.2 KiB	77.1 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: 1.2 s 761.5 KiB

URL	Transfer Size	Est Savings
cache.vtrcdn.com/orion/react/client/72fa6320c627611c.chunk.js	724.7 KiB	352.9 KiB
cache.vtrcdn.com/orion/react/client/c7c4a925e5123c14.chunk.js	156.5 KiB	101.7 KiB
accounts.google.com/gsi/client	95.6 KiB	71.3 KiB
fbauth.viator.com/__/auth/iframe.js	90.1 KiB	55.2 KiB
cache.vtrcdn.com/orion/react/client/778520d260ee7a97.chunk.js	49.2 KiB	32.3 KiB
cache.vtrcdn.com/orion/react/client/ebd9cdf8ad449637.chunk.js	62.2 KiB	30.3 KiB
cache.vtrcdn.com/orion/react/client/9387e69ea3756c05.chunk.js	46.0 KiB	25.5 KiB
cache.vtrcdn.com/orion/react/client/166993d704b277b8.js	33.0 KiB	24.9 KiB
cache.vtrcdn.com/orion/react/client/6992d6c266adc33a.chunk.js	35.5 KiB	23.6 KiB
/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENT...	30.9 KiB	22.8 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	35.7 KiB	20.9 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
www.cdn-net.com/cc.js?sid=7400bfc633aece5a&ts=1776814996056&namespace=advc	2.3 s	1.3 s	8.4 ms
Unattributable	1.6 s	472 ms	0.0 ms
cache.vtrcdn.com/orion/react/client/ebd9cdf8ad449637.chunk.js	1.0 s	966 ms	0.9 ms
www.viator.com/	780 ms	49 ms	6.5 ms
dd.viator.com/tags.js	250 ms	218 ms	8.5 ms
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	205 ms	169 ms	11 ms
cache.vtrcdn.com/orion/react/client/f30fa5f2393bd5a4.js	160 ms	126 ms	2.8 ms
beacon.riskified.com/?shop=tripadvisor&sid=6ce8eab9-f21a-48cb-83bd-310a4637ab22	138 ms	123 ms	6.0 ms
fbauth.viator.com/__/auth/iframe.js	119 ms	85 ms	25 ms
/_/scs/abc-static/_/js/k=gapi.lb.en.HLcjcliCxoY.O/m=gapi_...	82 ms	70 ms	11 ms
/dxjsmodule/2.c77bfb664ac5163c3679.chunk.js?Q_CLIENTVERSI...	73 ms	58 ms	3.2 ms
prod.accdab.net/cdn/cs/KGQlyGBrXOejGpF0_04cdS8Klbo.js	68 ms	60 ms	3.2 ms
cache.vtrcdn.com/orion/react/client/6992d6c266adc33a.chunk.js	60 ms	48 ms	0.6 ms
accounts.google.com/gsi/client	53 ms	27 ms	26 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
Script Evaluation	4.0 s
Other	1.4 s
Style & Layout	1.2 s
Parse HTML & CSS	338 ms
Garbage Collection	187 ms
Script Parsing & Compilation	165 ms
Rendering	108 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 reason	Failure type
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.	Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.	Not 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.

URL	Transfer Size
cache.vtrcdn.com/orion/react/client/72fa6320c627611c.chunk.js	725.4 KiB
/ESWViatorMessagingWebU1721722220141/webruntime/view/e980...	383.5 KiB
/captcha/?initialCid=AHrlqAAAAAMAXxwb6D3afbUAjeO8ew==&cid...	242.0 KiB
cache.vtrcdn.com/orion/react/client/c7c4a925e5123c14.chunk.js	157.5 KiB
dynamic-media.tacdn.com/media/photo-o/2e/b8/3a/eb/caption.jpg?w=600&h=500&s=1	126.8 KiB
/media/photo-o/32/f7/06/a9/caption.jpg?f=webp&w=800&h=500...	114.6 KiB
dynamic-media.tacdn.com/media/photo-o/2e/ed/91/5f/caption.jpg?w=600&h=500&s=1	114.1 KiB
/ESWViatorMessagingWebU1721722220141/assets/styles/salesf...	102.0 KiB
dynamic-media.tacdn.com/media/photo-o/2e/a6/46/1f/caption.jpg?w=600&h=500&s=1	99.6 KiB
accounts.google.com/gsi/client	96.4 KiB

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

●Optimize DOM size

●LCP breakdown

●LCP request discovery

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoid long main-thread tasks 20 long tasks found

●Image elements have explicit `width` and `height`

●Network Requests

●Network Round Trip Times 120 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 490 ms

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

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.

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
Banff Gondola `div._row_cofew_352 > div._col_cofew_367 > div._contentContainer_1pokz_335 > span._title_1p4uj_325`
Rio de Janeiro `a._spotlightCard_1rvst_325 > div._contentContainer_1rvst_377 > span._title_1rvst_373 > span._title_1p4uj_325`

These are opportunities to improve keyboard navigation in your application.

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
a Tripadvisor company `header._pageHeaderContent_1y9ew_369 > div._logoContainer_1y9ew_385 > div._logoContainer_117el_343 > a._viatorLogoLink_117el_423`

○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

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

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●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 are distinguishable without relying on color.

●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

○`[accesskey]` values are unique

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

○Elements with `role="dialog"` or `role="alertdialog"` 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

○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>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

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

○Identical links have the same purpose.

○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

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 / Warning	Source
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	www.cdn-net.com/cc.js?sid=7400bfc633aece5a&ts=1776814996056&namespace=advc line 93, col 427

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
accounts.google.com/gsi/client line 85, col 88	`[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token.`
cache.vtrcdn.com/orion/react/client/c7c4a925e5123c14.chunk.js line 2, col 1070	`AxiosError: Request failed with status code 403 at Mt (https://cache.vtrcdn.com/orion/react/client/c7c4a925e5123c14.chunk.js:3:1071) at XMLHttpRequest.g (https://cache.vtrcdn.com/orion/react/client/c7c4a925e5123c14.chunk.js:3:5656)`
cache.vtrcdn.com/orion/react/client/c7c4a925e5123c14.chunk.js line 2, col 1070	`AxiosError: Request failed with status code 403 at Mt (https://cache.vtrcdn.com/orion/react/client/c7c4a925e5123c14.chunk.js:3:1071) at XMLHttpRequest.g (https://cache.vtrcdn.com/orion/react/client/c7c4a925e5123c14.chunk.js:3:5656)`
www.viator.com/orion/ajax/firebase/credentials	`Failed to load resource: the server responded with a status of 403 ()`
www.viator.com/orion/ajax/react/inauth/result	`Failed to load resource: the server responded with a status of 403 ()`
www.viator.com/orion/ajax/react/inauth/result	`Failed to load resource: the server responded with a status of 403 ()`
www.viator.com/	`Not signed in with the identity provider.`

●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 issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Ensure proper origin isolation with COOP

○Mitigate clickjacking with XFO or CSP

100

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.

○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

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

○robots.txt is valid