Lighthouse Desktop

· 0 checks — Desktop 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
vp.nyt.com/video/2026/04/15/167010_1_26-HORMUZ-CHANGE-HP-PROMO_wg_720p.mp4	60.0 s	3.9 MiB
/video/hlsfmp4/2026/04/15/166816_1_00vid-rv-Iran-China_wg...	60.0 s	3.7 MiB
/video/hlsfmp4/2026/04/15/166816_1_00vid-rv-Iran-China_wg...	60.0 s	3.5 MiB
vp.nyt.com/video/2026/04/14/166823_1_15mag-onlanguage-coded-hp-82970_wg_720p.mp4	60.0 s	1.3 MiB
static.nytimes.com/email-images/newsletters/Weekender/NYT-TheWeekender-Icon.jpg	3600.0 s	176.0 KiB
static.nytimes.com/email-images/Sub_Only_Icons/NYT-OnTech-Icon.png	3600.0 s	128.5 KiB
/vi-assets/static-assets/fides-e7243ebfa531534e8ccb023358...	0.0 ms	99.6 KiB
static.nytimes.com/email-images/NYT-Newsletters-Serial-Icon-500px.jpg	3600.0 s	89.8 KiB
/email-images/Newsletter Icons/NYT-Newsletters-TheWorld-I...	3600.0 s	80.1 KiB
/images/2026/04/15/arts/DS_Thumbnail/DS_Thumbnail-vertica...	604800.0 s	632.1 KiB
static.nytimes.com/email-images/NYT-Newsletters-TheEvening-Icon.jpg	3600.0 s	78.2 KiB
/images/2025/09/04/podcasts/Reporter-Reads-album-art/Repo...	604800.0 s	577.4 KiB
/images/2026/04/15/arts/Screenshot-2026-04-15-at-5/Screen...	604800.0 s	529.3 KiB
/images/2026/04/13/arts/RV_Thumbnail-groupchat/RV_Thumbna...	604800.0 s	482.1 KiB
/images/2022/09/28/podcasts/hard-fork-album-art/hard-fork...	604800.0 s	468.3 KiB
www.datadoghq-browser-agent.com/us1/v6/datadog-rum.js	14400.0 s	58.3 KiB
static01.nyt.com/email-images/newsletters/books/Books-REV.png	3600.0 s	44.9 KiB
dd.nytimes.com/tags.js	3600.0 s	40.7 KiB
/images/2026/03/18/podcasts/serial-the-idiot-album-art/se...	604800.0 s	101.7 KiB
/images/2023/11/03/podcasts/week-in-opinion-art/week-in-o...	604800.0 s	90.1 KiB
/images/2025/04/02/podcasts/ross-douthat-album-art/ross-d...	604800.0 s	87.4 KiB
/images/2026/02/10/multimedia/AS-One-pan-white-wine-pasta...	604800.0 s	77.2 KiB
/images/2023/04/08/podcasts/modernlove-album-art/modernlo...	604800.0 s	76.3 KiB
/images/2026/04/16/multimedia/16nat-french-detained-jvtp/...	604800.0 s	44.3 KiB
static.chartbeat.com/js/chartbeat_mab.js	86400.0 s	10.1 KiB
/images/2026/04/15/multimedia/15cul-picasso-winner-qzkt/1...	604800.0 s	40.2 KiB
/images/2023/04/05/podcasts/ezra-klein-album-art/ezra-kle...	604800.0 s	37.6 KiB
/images/2026/04/16/multimedia/16int-pope-cameroon-plgm/16...	604800.0 s	37.4 KiB
/images/2025/06/09/podcasts/cannonball-album-art/cannonba...	604800.0 s	35.4 KiB
/images/2026/04/15/multimedia/15DC-ARCH-TOP-vtlm/15DC-ARC...	604800.0 s	33.9 KiB
/images/2022/09/28/podcasts/hard-fork-album-art/hard-fork...	604800.0 s	30.7 KiB
/images/2018/04/02/opinion/linda-greenhouse/linda-greenho...	604800.0 s	25.2 KiB
/images/2026/03/26/podcasts/serial-the-idiot-episodic-art...	604800.0 s	23.0 KiB
/images/2026/04/16/multimedia/16int-europe-right-01-mcqt/...	604800.0 s	20.6 KiB
/images/2026/04/15/multimedia/2026-04-14-dc-triumphal-arc...	604800.0 s	20.5 KiB
/images/2026/04/14/the-athletic/tamc-041526-viral-Pacers-...	604800.0 s	18.7 KiB
/images/2026/04/13/multimedia/13well-healthy-oats-hp-bgcp...	604800.0 s	18.6 KiB
/images/2026/04/12/multimedia/12ST-ALPINE-DIVORCE-btzk/12...	604800.0 s	13.7 KiB
/images/2022/10/12/podcasts/headlines-albumartwork-audioa...	604800.0 s	13.7 KiB
/images/2026/04/16/multimedia/16biz-iran-jet-fuel-01-gkql...	604800.0 s	13.5 KiB
/images/2025/04/02/podcasts/ross-douthat-album-art/ross-d...	604800.0 s	12.3 KiB
/video/hlsfmp4/2026/04/15/166816_1_00vid-rv-Iran-China_wg...	60.0 s	1.2 KiB
/images/2026/04/14/multimedia/14xp-florida-promo/14xp-flo...	604800.0 s	10.9 KiB
/images/2023/11/27/opinion/the-opinions-art/the-opinions-...	604800.0 s	10.0 KiB
/images/2026/04/16/multimedia/16Bedard-lzqf/16Bedard-lzqf...	604800.0 s	9.6 KiB
/images/2026/04/16/multimedia/16int-iran-srilanka-sailors...	604800.0 s	9.4 KiB
/images/2026/04/16/travel/16trippedup-illo/16trippedup-il...	604800.0 s	9.3 KiB
/images/2026/04/15/multimedia/15wheels-evs-top-lctw/15whe...	604800.0 s	9.2 KiB
/images/2026/04/15/multimedia/15int-italy-meloni-01-jzbm/...	604800.0 s	8.7 KiB
/images/2026/04/16/multimedia/16DC-WARPOWERS-blpm/16DC-WA...	604800.0 s	7.6 KiB
/images/2026/04/16/multimedia/16israel-iran-vought-cost-o...	604800.0 s	6.9 KiB
/images/2026/04/12/multimedia/12tbr-nelio-biedermann-01-t...	604800.0 s	5.4 KiB
/images/2020/09/21/podcasts/modernlove-logo/modernlove-lo...	604800.0 s	4.7 KiB
/images/2011/05/20/multimedia/music-popcast/music-popcast...	604800.0 s	4.6 KiB
/images/2026/03/26/well/WELL-UPLIFTING-BOOKS-image/WELL-U...	604800.0 s	4.1 KiB
/images/2018/03/27/books/book-review-album-art-v2/book-re...	604800.0 s	3.5 KiB
/images/2017/01/29/podcasts/the-daily-album-art/the-daily...	604800.0 s	2.5 KiB
a1.nyt.com/analytics/show-ads.js	86400.0 s	630 B
vp.nyt.com/video/2026/04/15/166814_1_16opinions-age-gaps-cine_wg_720p.mp4	60.0 s	94 B
/images/2026/04/15/arts/DS_Thumbnail/DS_Thumbnail-vertica...	604800.0 s	466 B
vp.nyt.com/video/2026/04/15/166814_1_16opinions-age-gaps-cine_wg_720p.mp4	60.0 s	0 B

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:10.818 source:map[column:140474 line:53 type:source-location url:https://www.nytimes.com/vi-assets/static-assets/main-d9016001b7d9c9ed2c45.js 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:186.474 source:map[type:text value:[unattributed]]] map[reflowTime:2.578 source:map[column:88567 line:1 type:source-location url:https://dd.nytimes.com/tags.js urlProvider:network]] map[reflowTime:2.011 source:map[column:17353 line:58 type:source-location url:https://www.nytimes.com/ urlProvider:network]] map[reflowTime:1.821 source:map[column:89146 line:1 type:source-location url:https://dd.nytimes.com/tags.js urlProvider:network]] map[reflowTime:0.279 source:map[column:95303 line:0 type:source-location url:https://www.nytimes.com/vi-assets/static-assets/home-7ec14230b5e40376466c.js urlProvider:network]] map[reflowTime:2.181 source:map[column:131808 line:27 type:source-location url:https://www.nytimes.com/vi-assets/static-assets/main-d9016001b7d9c9ed2c45.js urlProvider:network]] map[reflowTime:0.279 source:map[column:1851 line:0 type:source-location url:https://static01.nyt.com/video-static/betamax/pool-0.2.40-D37jd-c4.js urlProvider:network]] map[reflowTime:3.85 source:map[column:457080 line:0 type:source-location url:https://www.nytimes.com/vi-assets/static-assets/home-7ec14230b5e40376466c.js urlProvider:network]] map[reflowTime:4.508 source:map[column:457007 line:0 type:source-location url:https://www.nytimes.com/vi-assets/static-assets/home-7ec14230b5e40376466c.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
img._poster_13tnt_20 `img._poster_13tnt_20`	/images/2026/04/15/arts/Screenshot-2026-04-15-at-5/Screen...	528.6 KiB	500.9 KiB
Linda Greenhouse `div.css-4se1tq > div.css-hjiaw4 > picture > img.css-1kx59a0`	/images/2018/04/02/opinion/linda-greenhouse/linda-greenho...	24.3 KiB	24.0 KiB
Marie-Thérèse Ross-Mahé and Bill Ross pose in front of a large truck. `div > div.css-q70vsu > picture.css-hdqqnp > img.css-yf0ys`	/images/2026/04/16/multimedia/16nat-french-detained-jvtp/...	43.8 KiB	4.7 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-3-VIDEO

nodeLabel: div > div.css-11kuxu4 > div.css-122y91a > video.cinemagraph_video

path: 1,HTML,1,BODY,2,DIV,3,DIV,1,DIV,0,MAIN,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,SECTION,0,A,0,DIV,0,FIGURE,0,DIV,0,DIV,0,DIV,0,DIV,0,VIDEO

selector: div > div.css-11kuxu4 > div.css-122y91a > video.cinemagraph_video

snippet: <video data-testid="cinemagraph" data-play="true" src="https://vp.nyt.com/video/2026/04/15/167010_1_26-HORMUZ-CHANGE-HP-PROMO_wg_…" class="cinemagraph_video css-gvnats" muted="" loop="" autoplay="" playsinline="">

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
/vi-assets/static-assets/cssModulesStyles-194a4f08b37a2be...	52.1 KiB	162 ms
g1.nyt.com/fonts/css/web-fonts.c851560786173ad206e1f76c1901be7e096e8f8b.css	6.8 KiB	203 ms
/vi-assets/static-assets/global-bf55b3b62e74478ad48892213...	3.8 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.

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: 239 ms

URL	Time Spent
nytimes.com/	239 ms
www.nytimes.com/	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

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: 130 ms 1.2 MiB

URL	Transfer Size	Est Savings
www.nytimes.com/vi-assets/static-assets/main-d9016001b7d9c9ed2c45.js	929.3 KiB	401.8 KiB
www.nytimes.com/vi-assets/static-assets/home-7ec14230b5e40376466c.js	457.3 KiB	196.9 KiB
/pagead/managed/js/gpt/m202604140101/pubads_impl.js?cb=31...	187.7 KiB	130.4 KiB
static01.nyt.com/video-static/betamax/hlsjs-Bt8316rQ.js	106.9 KiB	102.1 KiB
www.nytimes.com/vi-assets/static-assets/vendor-a174c85d4d9cb7e7c988.js	105.8 KiB	91.0 KiB
/gtm.js?id=GTM-P528B3&gtm_auth=tfAzqo1rYDLgYhmTnSjPqw&gtm...	191.7 KiB	74.7 KiB
accounts.google.com/gsi/client	95.4 KiB	71.1 KiB
www.datadoghq-browser-agent.com/us1/v6/datadog-rum.js	57.9 KiB	28.5 KiB
pay.google.com/gp/p/js/pay.js	57.4 KiB	25.4 KiB
pagead2.googlesyndication.com/tag/js/gpt.js	34.2 KiB	24.0 KiB
pagead2.googlesyndication.com/tag/js/gpt.js	34.2 KiB	24.0 KiB
/vi-assets/static-assets/fides-e7243ebfa531534e8ccb023358...	94.8 KiB	23.2 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
www.nytimes.com/vi-assets/static-assets/main-d9016001b7d9c9ed2c45.js	2.7 s	2.2 s	90 ms
www.nytimes.com/	739 ms	106 ms	32 ms
Unattributable	508 ms	53 ms	0.0 ms
static01.nyt.com/video-static/betamax/betamax-shared-sTKBl65Y.js	315 ms	249 ms	0.1 ms
/vi-assets/static-assets/vendors~audio~byline~capsule~car...	236 ms	212 ms	2.3 ms
www.nytimes.com/vi-assets/static-assets/adslot-59e729d7c8593a1554b2.js	200 ms	173 ms	0.5 ms
/gtm.js?id=GTM-P528B3&gtm_auth=tfAzqo1rYDLgYhmTnSjPqw&gtm...	189 ms	148 ms	27 ms
/pagead/managed/js/gpt/m202604140101/pubads_impl.js?cb=31...	122 ms	83 ms	13 ms
dd.nytimes.com/tags.js	98 ms	79 ms	3.2 ms
/vi-assets/static-assets/fides-e7243ebfa531534e8ccb023358...	94 ms	70 ms	9.4 ms
www.datadoghq-browser-agent.com/us1/v6/datadog-rum.js	83 ms	72 ms	4.0 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	3.5 s
Other	756 ms
Style & Layout	518 ms
Script Parsing & Compilation	261 ms
Garbage Collection	167 ms
Rendering	133 ms
Parse HTML & CSS	76 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
The page has an unload handler in the main frame.	Actionable

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 5.9 KiB

URL	Transfer Size	Est Savings
.css-1pg5jir { max-width: calc(100% - 40px); margin: auto; } …	53.3 KiB	5.9 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 67.7 KiB

URL	Transfer Size	Est Savings
.css-1pg5jir { max-width: calc(100% - 40px); margin: auto; } …	53.3 KiB	51.9 KiB
/vi-assets/static-assets/cssModulesStyles-194a4f08b37a2be...	15.9 KiB	15.8 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
vp.nyt.com/video/2026/04/15/166814_1_16opinions-age-gaps-cine_wg_720p.mp4	4.5 MiB
vp.nyt.com/video/2026/04/15/167010_1_26-HORMUZ-CHANGE-HP-PROMO_wg_720p.mp4	3.9 MiB
/video/hlsfmp4/2026/04/15/166816_1_00vid-rv-Iran-China_wg...	3.7 MiB
/video/hlsfmp4/2026/04/15/166816_1_00vid-rv-Iran-China_wg...	3.5 MiB
vp.nyt.com/video/2026/04/14/166823_1_15mag-onlanguage-coded-hp-82970_wg_720p.mp4	1.3 MiB
www.nytimes.com/vi-assets/static-assets/main-d9016001b7d9c9ed2c45.js	931.6 KiB
/images/2026/04/15/arts/DS_Thumbnail/DS_Thumbnail-vertica...	632.1 KiB
/images/2025/09/04/podcasts/Reporter-Reads-album-art/Repo...	577.4 KiB
/images/2026/04/15/arts/Screenshot-2026-04-15-at-5/Screen...	529.3 KiB
/images/2026/04/13/arts/RV_Thumbnail-groupchat/RV_Thumbna...	482.1 KiB

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

●Layout shift culprits

●Optimize DOM size

●Font display

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify JavaScript

●User Timing marks and measures 32 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 1 animated element found

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

●Network Requests

●Network Round Trip Times 100 ms

●Server Backend Latencies 110 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 50 ms

●Avoid large layout shifts 5 layout shifts found

○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.

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
+0.22% `div.css-27ffgo > div.css-m7oyll > div.css-1ooqyr8 > div.css-ke4w0y`

These are opportunities to improve the legibility of your content.

Names and labels

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
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`

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.

Best practices

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
U.S. `nav > ul.css-17j7fe1 > li.css-1bo3wsb > a.css-u90q6n`
open U.S. `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
open World `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
open Business `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
Arts `nav > ul.css-17j7fe1 > li.css-1bo3wsb > a.css-u90q6n`
open Arts `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
open Lifestyle `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
open Opinion `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
Video `nav > ul.css-17j7fe1 > li.css-1bo3wsb > a.css-u90q6n`
open Video `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
open Audio `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
open Games `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
open Cooking `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
open Wirecutter `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`
open The Athletic `nav > ul.css-17j7fe1 > li.css-1bo3wsb > button.css-19wyrnd`

These items highlight common accessibility best practices.

○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]`s are contained by their required parent element

●`[role]` values are valid

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

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

●Buttons have an accessible name

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

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

●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

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

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<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

●`[lang]` attributes have a valid value

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●ARIA IDs are unique

●`<video>` elements contain a `<track>` element with `[kind="captions"]`

●Identical links have the same purpose.

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

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

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with 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

○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.

○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.

○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.

○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
Unload event listeners are deprecated and will be removed.	www.nytimes.com/vi-assets/static-assets/adslot-59e729d7c8593a1554b2.js

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
www.datadoghq-browser-agent.com/us1/v6/datadog-rum.js	`[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token.`
www.nytimes.com/	`Not signed in with the identity provider.`

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.

●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

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Use a strong HSTS policy

○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

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
www.nytimes.com/2026/04/14/us/politics/trump-iran-blockade-china.html	Read more

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
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`
img._poster_13tnt_20 `img._poster_13tnt_20`

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 are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`