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
cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js	3600.0 s	104.3 KiB
c.amazon-adsystem.com/aax2/apstag.js	3600.0 s	91.0 KiB
btloader.com/tag?o=6315858775244800&upapi=true	300.0 s	36.8 KiB
/v1/imgs/3cf/27e/f417124b00b4c7e93cb98f406f71333a20-20260...	86400.0 s	77.1 KiB
pub.doubleverify.com/dvtag/21236410/DV464041/pub.js	900.0 s	33.6 KiB
secure.cdn.fastclick.net/js/pubcid/latest/pubcid.min.js	900.0 s	21.7 KiB
assets.zephr.com/zephr-browser/1.9.1/zephr-browser.umd.js	0.0 ms	13.3 KiB
/v1/imgs/012/f66/aee20e6c917b4bb49b91f9d4d785519096-0626S...	86400.0 s	17.8 KiB
public.profitwell.com/js/profitwell.js?auth=2d1c024c7e0c8a7449a9e35d2b494e7b	14400.0 s	9.7 KiB
/v1/imgs/bc8/e3f/8fdc0e3b7efc000620bea32da80392fab4-lee-q...	86400.0 s	15.9 KiB
/v1/imgs/7c5/00c/72f3f259719643a5eb1574aac6885afd2b-NYM-C...	86400.0 s	15.5 KiB
/v1/imgs/4da/f7c/7617773198e37acbbc606f268b0611d4d2-v2-UA...	86400.0 s	15.4 KiB
/v1/imgs/7c4/22f/9573bdc71b11f00421894843841db5abbb-35-27...	86400.0 s	14.5 KiB
/v1/imgs/d1d/4ac/19b1b2cd04ca34f4619c7899f02f7f4b9a-17-al...	86400.0 s	13.1 KiB
/v1/imgs/caa/36a/3a58475a372b7b5decf017ac9866dd25e9-doorm...	86400.0 s	13.0 KiB
/v1/imgs/467/17b/68c69128c144d98155d4c1d28d7910849a-61258...	86400.0 s	12.8 KiB
/v1/imgs/6ba/cd8/b570e43327143770dbabb463f552113ce7-luxur...	86400.0 s	11.2 KiB
/v1/imgs/070/9ae/a771d1e4787e036fae8a2ec8d093a88fad-04132...	86400.0 s	10.6 KiB
config.aps.amazon-adsystem.com/configs/3176	3600.0 s	4.4 KiB
/v1/imgs/070/9ae/a771d1e4787e036fae8a2ec8d093a88fad-04132...	86400.0 s	8.3 KiB
/v1/imgs/bbd/b4e/ebbc2498859dd0926d1c7382522f022bcd-25109...	86400.0 s	7.9 KiB
sb.scorecardresearch.com/internal-cs/default/beacon-and.js	86400.0 s	7.8 KiB
/v1/imgs/7f8/83c/919c0cd32da2b97e3a762b35f78bd784ed-45-Pi...	86400.0 s	6.3 KiB
/v1/imgs/a5d/8bf/4600079ebf3be90660ac854788f0aa0315-IMG-7...	86400.0 s	6.1 KiB
/v1/imgs/6ba/cd8/b570e43327143770dbabb463f552113ce7-luxur...	86400.0 s	5.7 KiB
/v1/imgs/97f/381/f7f13ba154f2502d40f61091bdc9d3b855-bad-t...	86400.0 s	5.2 KiB
/v1/imgs/104/8d4/a2fd2edc3c99ad96e2ca7d1e59c6aa35ca-TNYSK...	86400.0 s	5.1 KiB
/v1/imgs/be3/85d/5918428b39dcbecba9707882dc058e4c7b-170-W...	86400.0 s	5.0 KiB
/v1/imgs/0a5/6f6/f9008d570e8d2063c984231e12948106e9-411-T...	86400.0 s	4.9 KiB
/v1/imgs/b02/75a/c67cd3aa7c2ef385dce5738951361c23b4-HED-0...	86400.0 s	4.0 KiB
/v1/imgs/86d/b6c/cce4b2339e7faa066f5bad2bed3865008f-Getty...	86400.0 s	3.6 KiB
/v1/imgs/c19/63e/8bffeffaab495ec955a3e81a995ff9e63a-Getty...	86400.0 s	3.2 KiB
/v1/imgs/705/b73/29ebce4c847a07e8e36255528e7dd53536-15389...	86400.0 s	3.2 KiB
/v1/imgs/5d9/c49/0ba100a3a3b0f3c68f69ee370ad03ae63f-ARO-G...	86400.0 s	3.1 KiB
/v1/imgs/9b9/5ab/028ff74b23e8bebb1e27a6a98d7bcbb591-benah...	86400.0 s	1.9 KiB
assets.nymag.com/media/components/customer-alert-banner/alert.svg	0.0 ms	740 B
apps.voxmedia.com/ad-block-detect/test_ads_prebid_blocker.js	0.0 ms	378 B
assets.nymag.com/media/components/customer-alert-banner/close_x.svg	0.0 ms	335 B
assets.nymag.com/media/components/customer-alert-banner/double_chevron.svg	0.0 ms	315 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:0.5691849999999999] map[node:map[boundingRect:map[bottom:1436 height:613 left:80 right:402 top:823 width:322] lhId:page-1-SECTION nodeLabel:AUCTIONS Who Will Buy This $3 Million Golden Apple? A string of record-breaking… path:1,HTML,2,BODY,3,MAIN,0,DIV,4,SECTION selector:body.layout-simple > main.main > div.collection-articles-lede_curbed-homepage > section.lede-item snippet:<section class="lede-item overridden " data-track-type="article-link" data-track-component-name="collection-articles-lede" data-track-page-uri="www.curbed.com/_pages/cmo7ks9zs00000igdgdrlr8wo@published" data-track-authors="David Lê" data-track-headline="Who Will Buy This $3 Million Golden Apple?" data-track-index="1" data-editable="settings"> type:node] score:0.400371 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:493 height:402 left:0 right:402 top:91 width:402] lhId:page-0-IMG nodeLabel:section.lede-item > div.lede-image-wrap > picture.lede-image > img path:1,HTML,2,BODY,3,MAIN,0,DIV,2,SECTION,0,DIV,0,PICTURE,7,IMG selector:section.lede-item > div.lede-image-wrap > picture.lede-image > img snippet:<img src="https://pyxis.nymag.com/v1/imgs/6ba/cd8/b570e43327143770dbabb463f552113ce7…" alt=""> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1927 height:411 left:10 right:332 top:1516 width:322] lhId:page-2-SECTION nodeLabel:PLEASE BE ADVISED How to Plan a City Hall Wedding We spoke to couples about the… path:1,HTML,2,BODY,3,MAIN,0,DIV,5,SECTION selector:body.layout-simple > main.main > div.collection-articles-lede_curbed-homepage > section.lede-item snippet:<section class="lede-item overridden " data-track-type="article-link" data-track-component-name="collection-articles-lede" data-track-page-uri="www.curbed.com/_pages/cmo7hquor00000ifmwhv1pgrr@published" data-track-authors="Jeremy Rellosa" data-track-headline="How to Plan a City Hall Wedding" data-track-index="2" data-editable="settings"> type:node] score:0.12315 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1307 height:403 left:80 right:402 top:904 width:322] lhId:page-10-IMG nodeLabel:section.lede-item > div.lede-image-wrap > picture.lede-image > img path:1,HTML,2,BODY,3,MAIN,0,DIV,4,SECTION,0,DIV,0,PICTURE,7,IMG selector:section.lede-item > div.lede-image-wrap > picture.lede-image > img snippet:<img src="https://pyxis.nymag.com/v1/imgs/070/9ae/a771d1e4787e036fae8a2ec8d093a88fad…" alt=""> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1436 height:613 left:80 right:402 top:823 width:322] lhId:page-1-SECTION nodeLabel:AUCTIONS Who Will Buy This $3 Million Golden Apple? A string of record-breaking… path:1,HTML,2,BODY,3,MAIN,0,DIV,4,SECTION selector:body.layout-simple > main.main > div.collection-articles-lede_curbed-homepage > section.lede-item snippet:<section class="lede-item overridden " data-track-type="article-link" data-track-component-name="collection-articles-lede" data-track-page-uri="www.curbed.com/_pages/cmo7ks9zs00000igdgdrlr8wo@published" data-track-authors="David Lê" data-track-headline="Who Will Buy This $3 Million Golden Apple?" data-track-index="1" data-editable="settings"> type:node] score:0.045664 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.nymag.com/miller/Miller_Text_Roman.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.nymag.com/miller/Miller_Text_Italic.woff2]]] type:subitems]]]

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
fonts.nymag.com/pitch/Pitch.woff2	25 ms
fonts.nymag.com/antique-no6/AntiqueNo6-Bold-Web.woff2	20 ms
fonts.nymag.com/miller/Miller_Text_Italic.woff2	20 ms
fonts.nymag.com/miller/Miller_Text_Roman.woff2	15 ms
fonts.nymag.com/pitch/Pitch-Italic.woff2	10 ms
fonts.nymag.com/antique-no6/AntiqueNo6-BoldItalic-Web.woff2	10 ms
fonts.nymag.com/antique-no6/AntiqueNo6-Roman.woff	10 ms

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-0-IMG

nodeLabel: section.lede-item > div.lede-image-wrap > picture.lede-image > img

path: 1,HTML,2,BODY,3,MAIN,0,DIV,2,SECTION,0,DIV,0,PICTURE,7,IMG

selector: section.lede-item > div.lede-image-wrap > picture.lede-image > img

snippet: <img src="https://pyxis.nymag.com/v1/imgs/6ba/cd8/b570e43327143770dbabb463f552113ce7…" alt="">

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

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
div.collection-excerpt_photo-story > div.collection-excerpt_photo-story-link > div.image-wrap > img.feed-img `div.collection-excerpt_photo-story > div.collection-excerpt_photo-story-link > div.image-wrap > img.feed-img`	/v1/imgs/3cf/27e/f417124b00b4c7e93cb98f406f71333a20-20260...	77.0 KiB	47.0 KiB
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/012/f66/aee20e6c917b4bb49b91f9d4d785519096-0626S...	17.7 KiB	6.8 KiB
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/4da/f7c/7617773198e37acbbc606f268b0611d4d2-v2-UA...	15.3 KiB	4.7 KiB
section.lede-item > div.lede-image-wrap > picture.lede-image > img `section.lede-item > div.lede-image-wrap > picture.lede-image > img`	/v1/imgs/7c5/00c/72f3f259719643a5eb1574aac6885afd2b-NYM-C...	15.5 KiB	4.6 KiB

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

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
AUCTIONS Who Will Buy This $3 Million Golden Apple? A string of record-breaking… `body.layout-simple > main.main > div.collection-articles-lede_curbed-homepage > section.lede-item`	0.400
PLEASE BE ADVISED How to Plan a City Hall Wedding We spoke to couples about the… `body.layout-simple > main.main > div.collection-articles-lede_curbed-homepage > section.lede-item`	0.123
AUCTIONS Who Will Buy This $3 Million Golden Apple? A string of record-breaking… `body.layout-simple > main.main > div.collection-articles-lede_curbed-homepage > section.lede-item`	0.046

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

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: 1.4 s 408.6 KiB

URL	Transfer Size	Est Savings
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB	107.6 KiB
www.curbed.com/	144.0 KiB	73.2 KiB
metrics.curbed.com/gtm.js?id=GTM-NL7LR9Z	169.5 KiB	49.3 KiB
pagead2.googlesyndication.com/pagead/js/adsbygoogle.js	54.1 KiB	43.6 KiB
c.amazon-adsystem.com/aax2/apstag.js	90.6 KiB	38.1 KiB
pagead2.googlesyndication.com/pagead/js/adsbygoogle.js	54.1 KiB	36.4 KiB
cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js	71.8 KiB	36.4 KiB
www.googletagservices.com/tag/js/gpt.js	33.9 KiB	24.1 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
cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js	1.3 s	1.1 s	29 ms
Unattributable	1.1 s	221 ms	0.0 ms
www.curbed.com/	1.1 s	245 ms	109 ms
metrics.curbed.com/gtm.js?id=GTM-NL7LR9Z	415 ms	358 ms	49 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	293 ms	193 ms	57 ms
btloader.com/tag?o=6315858775244800&upapi=true	166 ms	140 ms	8.4 ms
c.amazon-adsystem.com/aax2/apstag.js	121 ms	82 ms	25 ms
sb.scorecardresearch.com/cs/7976662/beacon.js	117 ms	79 ms	1.6 ms
pub.doubleverify.com/dvtag/21236410/DV464041/pub.js	98 ms	77 ms	8.5 ms
pagead2.googlesyndication.com/pagead/js/adsbygoogle.js	97 ms	54 ms	42 ms
monacobeatles.com/build/82769058/571347fc6d8f47dcd5c11153c3be.js	96 ms	75 ms	8.7 ms
www.googletagservices.com/tag/js/gpt.js	84 ms	58 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	2.8 s
Other	1.0 s
Style & Layout	436 ms
Script Parsing & Compilation	380 ms
Rendering	221 ms
Garbage Collection	178 ms
Parse HTML & CSS	78 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 3.7 KiB

URL	Transfer Size	Est Savings
inline: /******/ (function(modules) { // w…	6.3 KiB	3.7 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: 0.0 ms 20.3 KiB

URL	Transfer Size	Est Savings
.customer-alert-container{align-items:center;color:#db2800;display:flex;font-size:1em;height:0; … } …	28.7 KiB	20.3 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
div.collection-excerpt_photo-story > div.collection-excerpt_photo-story-link > div.image-wrap > img.feed-img `div.collection-excerpt_photo-story > div.collection-excerpt_photo-story-link > div.image-wrap > img.feed-img`	/v1/imgs/3cf/27e/f417124b00b4c7e93cb98f406f71333a20-20260...
section.lede-item > div.lede-image-wrap > picture.lede-image > img `section.lede-item > div.lede-image-wrap > picture.lede-image > img`	/v1/imgs/6ba/cd8/b570e43327143770dbabb463f552113ce7-luxur...
section.lede-item > div.lede-image-wrap > picture.lede-image > img `section.lede-item > div.lede-image-wrap > picture.lede-image > img`	/v1/imgs/070/9ae/a771d1e4787e036fae8a2ec8d093a88fad-04132...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/bc8/e3f/8fdc0e3b7efc000620bea32da80392fab4-lee-q...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/caa/36a/3a58475a372b7b5decf017ac9866dd25e9-doorm...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/6ba/cd8/b570e43327143770dbabb463f552113ce7-luxur...
section.lede-item > div.lede-image-wrap > picture.lede-image > img `section.lede-item > div.lede-image-wrap > picture.lede-image > img`	/v1/imgs/7c5/00c/72f3f259719643a5eb1574aac6885afd2b-NYM-C...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/4da/f7c/7617773198e37acbbc606f268b0611d4d2-v2-UA...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/467/17b/68c69128c144d98155d4c1d28d7910849a-61258...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/070/9ae/a771d1e4787e036fae8a2ec8d093a88fad-04132...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/d1d/4ac/19b1b2cd04ca34f4619c7899f02f7f4b9a-17-al...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/bbd/b4e/ebbc2498859dd0926d1c7382522f022bcd-25109...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/012/f66/aee20e6c917b4bb49b91f9d4d785519096-0626S...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/104/8d4/a2fd2edc3c99ad96e2ca7d1e59c6aa35ca-TNYSK...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/5d9/c49/0ba100a3a3b0f3c68f69ee370ad03ae63f-ARO-G...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/9b9/5ab/028ff74b23e8bebb1e27a6a98d7bcbb591-benah...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/c19/63e/8bffeffaab495ec955a3e81a995ff9e63a-Getty...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/7f8/83c/919c0cd32da2b97e3a762b35f78bd784ed-45-Pi...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/86d/b6c/cce4b2339e7faa066f5bad2bed3865008f-Getty...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/a5d/8bf/4600079ebf3be90660ac854788f0aa0315-IMG-7...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/be3/85d/5918428b39dcbecba9707882dc058e4c7b-170-W...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/705/b73/29ebce4c847a07e8e36255528e7dd53536-15389...
li.feed-item > div.feed-image-wrap > picture.feed-image > img `li.feed-item > div.feed-image-wrap > picture.feed-image > img`	/v1/imgs/b02/75a/c67cd3aa7c2ef385dce5738951361c23b4-HED-0...

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

●Document request latency

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Avoids enormous network payloads Total size was 1,762 KiB

●User Timing marks and measures 12 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 1 animated element found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 40 ms

●Server Backend Latencies 390 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 100 ms

○INP breakdown

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.

Names and labels

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
body.layout-simple > main.main > div.collection-articles-lede_curbed-homepage > a.show-more `body.layout-simple > main.main > div.collection-articles-lede_curbed-homepage > a.show-more`

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.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
UNDER A MILLION A Jackson Heights Two-Bedroom With a Private Elevator for $815,… `main.main > div.collection-articles_curbed-secondary > div.list-wrapper > ul.collection-articles-wrapper`
ON THE MARKET The Brooklyn Heights ‘Spite’ House Is for Sale LISTINGS EDIT This… `main.main > div.collection-articles_market > div.list-wrapper > ul.collection-articles-wrapper`

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
UNDER A MILLION A Jackson Heights Two-Bedroom With a Private Elevator for $815,… `div.list-wrapper > ul.collection-articles-wrapper > div.collection-articles-column > li.feed-item`
UNDER A MILLION A Clinton Hill One-Bedroom With a Lovely Roof-Deck for $799,000… `div.list-wrapper > ul.collection-articles-wrapper > div.collection-articles-column > li.feed-item`
THE YESTERYEAR ISSUE ‘I Became the Most-Wanted Graffiti Artist in New York’ Lee… `div.list-wrapper > ul.collection-articles-wrapper > div.collection-articles-column > li.feed-item`
WORKING ARRANGEMENTS The Bar That’s an Office 4 Days a Week The Francis Kite Cl… `div.list-wrapper > ul.collection-articles-wrapper > div.collection-articles-column > li.feed-item`
ON THE MARKET The Brooklyn Heights ‘Spite’ House Is for Sale `div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-item`
div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-ad-container `div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-ad-container`
LISTINGS EDIT This Week’s Worth-It New York City Apartment Listings `div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-item`
LANGUISHING Lorna Simpson Can’t Find a Buyer for Her Ultramodern Fort Greene Ho… `div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-item`
div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-ad-container `div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-ad-container`
WHO’S SELLING The Poet’s House on Wyckoff Street `div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-item`
div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-ad-container `div.list-wrapper > ul.collection-articles-wrapper > div.market-feed-section-container > li.feed-ad-container`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

○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

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

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

●Links are distinguishable without relying on color.

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●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

○`<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

○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.

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

○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.

○Elements with visible text labels have matching accessible names.

○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

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Displayed size	Actual size	Expected size
section.lede-item > div.lede-image-wrap > picture.lede-image > img `section.lede-item > div.lede-image-wrap > picture.lede-image > img`	/v1/imgs/6ba/cd8/b570e43327143770dbabb463f552113ce7-luxur...	402 x 402	365 x 365	603 x 603

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.

Description
`TypeError: e.data.substr is not a function at k (<anonymous>:3:11)`

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Map URL
www.curbed.com/
metrics.curbed.com/gtm.js?id=GTM-NL7LR9Z
cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js	cdn.concert.io/lib/concert-ads/v2-latest/concert_ads.js.map

●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

●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 clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

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

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`