D — https://www.ted.com | BeaverCheck Audit

Site Health

Score: 69 / 100

Based on 8 categories, 0 sections

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

Top Priorities (5)

Content-Security-Policy header is missing

Security › Security Headers

No Content-Security-Policy header found

Security › Content Security Policy

Page weighs 39.4 MB (26.4 MB transferred)

Performance › Page Weight Budget

1 control(s) without accessible label

Accessibility › Form Accessibility

1 image-only link(s) without alt text

Accessibility › Link & Button Quality

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Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fwww.ted.com)](https://beavercheck.com/results/b5acf832-b44c-4420-9d0f-4205b0d54671)

HTML

<a href="https://beavercheck.com/results/b5acf832-b44c-4420-9d0f-4205b0d54671"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fwww.ted.com" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Fwww.ted.com

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

100

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

5.18 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

13.68 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

8.06 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.059

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

18.86 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

40.04 s

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.

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

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

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

Request	Cache TTL	Transfer Size
pl.tedcdn.com/fonts/InterVariable.woff2	0.0 ms	344.6 KiB
cdn.yourbow.com/ted/hbyb.js	3600.0 s	196.3 KiB
/fss/fve7g7/bafb024b-e8af-4444-b81c-c4a2a7d52be2/Bottom+B...	0.0 ms	138.3 KiB
cdn.fundraiseup.com/widget/AVFWZGUV	0.0 ms	69.5 KiB
ak.sail-horizon.com/spm/spm.v1.min.js	600.0 s	55.2 KiB
b-code.liadm.com/a-091g.min.js	86400.0 s	46.9 KiB
cmp.osano.com/AzqTgHUHUGJa7gInt/9e4d9097-fa02-474b-9ac9-958cf3f54337/osano-ui.js	86400.0 s	31.0 KiB
static.cdn.prismic.io/prismic.js?new=true&repo=tedconf	0.0 ms	9.8 KiB
cdn.rudderlabs.com/3.21.0/modern/plugins/rsa-plugins-RetryQueue.min.js	3600.0 s	3.9 KiB
cdn.rudderlabs.com/3.21.0/modern/plugins/rsa-plugins-common.min.js	3600.0 s	3.5 KiB
vz-8bbc7bbf-a1e.b-cdn.net/44455006-1a54-4b23-bfe8-c6187b9478d5/720p/video.m3u8	30.0 s	1.8 KiB
vz-8bbc7bbf-a1e.b-cdn.net/44455006-1a54-4b23-bfe8-c6187b9478d5/480p/video.m3u8	30.0 s	1.8 KiB
vz-8bbc7bbf-a1e.b-cdn.net/c0618340-2751-4cb8-bcbd-3992c694dac3/720p/video.m3u8	30.0 s	1.8 KiB
vz-8bbc7bbf-a1e.b-cdn.net/c0618340-2751-4cb8-bcbd-3992c694dac3/480p/video.m3u8	30.0 s	1.7 KiB
vz-8bbc7bbf-a1e.b-cdn.net/42e70133-846c-4d82-b891-6715daa034dc/720p/video.m3u8	30.0 s	1.7 KiB
vz-8bbc7bbf-a1e.b-cdn.net/42e70133-846c-4d82-b891-6715daa034dc/480p/video.m3u8	30.0 s	1.7 KiB
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/1080p/video.m3u8	30.0 s	1.6 KiB
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/480p/video.m3u8	30.0 s	1.6 KiB
vz-8bbc7bbf-a1e.b-cdn.net/49a16d6c-9839-438c-a814-ee646f5b515f/720p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/49a16d6c-9839-438c-a814-ee646f5b515f/480p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/7740cf90-8213-4c38-8b2f-68813d73045d/480p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/480p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/720p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a1599794-4c67-4c14-9161-d08bf188b37c/720p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a1599794-4c67-4c14-9161-d08bf188b37c/480p/video.m3u8	30.0 s	1.3 KiB
cdn.rudderlabs.com/3.21.0/modern/plugins/rsa-plugins-remote-XhrQueue.min.js	3600.0 s	1.6 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/720p/video.m3u8	30.0 s	1.2 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/480p/video.m3u8	30.0 s	1.2 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a442ca3a-9e00-40c5-8a76-33ee6472d589/720p/video.m3u8	30.0 s	1.1 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a442ca3a-9e00-40c5-8a76-33ee6472d589/480p/video.m3u8	30.0 s	1.1 KiB
vz-8bbc7bbf-a1e.b-cdn.net/44455006-1a54-4b23-bfe8-c6187b9478d5/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/42e70133-846c-4d82-b891-6715daa034dc/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a442ca3a-9e00-40c5-8a76-33ee6472d589/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/7740cf90-8213-4c38-8b2f-68813d73045d/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a1599794-4c67-4c14-9161-d08bf188b37c/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/49a16d6c-9839-438c-a814-ee646f5b515f/playlist.m3u8	30.0 s	926 B
vz-8bbc7bbf-a1e.b-cdn.net/c0618340-2751-4cb8-bcbd-3992c694dac3/playlist.m3u8	30.0 s	926 B
cdn.rudderlabs.com/3.21.0/modern/plugins/rsa-plugins.js	3600.0 s	990 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.

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:158.907 source:map[column:137513 line:1 type:source-location url:https://www.ted.com/_next/static/chunks/0ceke3n72t5kx.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:79.584 source:map[column:4871 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]] map[reflowTime:109.165 source:map[column:26857 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]] map[reflowTime:1.095 source:map[column:33340 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]] map[reflowTime:1.632 source:map[column:34152 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/12yqivmg51ele.js urlProvider:network]] map[reflowTime:3.295 source:map[column:27358 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]] map[reflowTime:9.099 source:map[column:169304 line:2 type:source-location url:https://cdn.fundraiseup.com/widget/AVFWZGUV urlProvider:network]] map[reflowTime:62.697 source:map[type:text value:[unattributed]]] map[reflowTime:2.441 source:map[column:26 line:803 type:source-location url:https://media.begenuin.com/sdk/chunks/vendor-external-O5cr870B.js urlProvider:network]] map[reflowTime:20.363 source:map[column:40 line:8184 type:source-location url:https://media.begenuin.com/sdk/chunks/vendor-animation-Cov7gVAf.js urlProvider:network]] map[reflowTime:18.691 source:map[column:86 line:8419 type:source-location url:https://media.begenuin.com/sdk/chunks/vendor-animation-Cov7gVAf.js urlProvider:network]] map[reflowTime:20.839 source:map[column:15 line:7691 type:source-location url:https://media.begenuin.com/sdk/chunks/feed-C4rzC3fy.js urlProvider:network]] map[reflowTime:8.107 source:map[column:20327 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]]]

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

lhId: page-0-IMG

nodeLabel: Civilization on the Moon — and what it means for life on Earth

path: 1,HTML,1,BODY,1,DIV,1,DIV,1,DIV,1,MAIN,0,DIV,0,SECTION,0,SECTION,0,DIV,1,DIV,1,DIV,0,DIV,0,A,0,IMG

selector: div.swiper-slide > div.relative > a.block > img.object-cover

snippet: <img alt="Civilization on the Moon — and what it means for life on Earth" loading="eager" decoding="async" data-nimg="fill" class="object-cover object-top" sizes="(min-width: 1920px) 33vw, (min-width: 1024px) 50vw, (min-width: 768px) 66v…" srcset="https://pi.tedcdn.com/r/talkstar-photos.s3.amazonaws.com/uploads/89b644f0-…" src="https://pi.tedcdn.com/r/talkstar-photos.s3.amazonaws.com/uploads/89b644f0-…" style="position: absolute; height: 100%; width: 100%; inset: 0px;">

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.

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.

URL	Transfer Size	Duration
ak.sail-horizon.com/spm/spm.v1.min.js	55.2 KiB	1.5 s

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

	URL	Resource Size	Est Savings
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/7740cf90-8213-4c38-8b2f-68813d73045d/thumbnail_47deaab8.jpg	424.3 KiB	382.0 KiB
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/thumbnail_12373bac.jpg	420.2 KiB	377.9 KiB
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/d8644e4c-8639-4796-b1fa-8eacec07c26a/thumbnail_830e788d.jpg	418.8 KiB	376.5 KiB
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/a442ca3a-9e00-40c5-8a76-33ee6472d589/thumbnail_b0c7edff.jpg	406.4 KiB	364.1 KiB
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/c0618340-2751-4cb8-bcbd-3992c694dac3/thumbnail_e067781e.jpg	381.2 KiB	339.0 KiB
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/a1599794-4c67-4c14-9161-d08bf188b37c/thumbnail_5ab14752.jpg	424.3 KiB	317.4 KiB
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/44455006-1a54-4b23-bfe8-c6187b9478d5/thumbnail_d2276f67.jpg	419.2 KiB	312.3 KiB
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/49a16d6c-9839-438c-a814-ee646f5b515f/thumbnail_9a7724e0.jpg	410.9 KiB	304.0 KiB
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/e921c045-0f6e-4a88-a7cc-0695fa6b5153/thumbnail_b29f394e.jpg	405.9 KiB	299.0 KiB
div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto `div.swiper-slide > div.gencl:h-full > div.gencl:relative > video.gencl:w-auto`	/42e70133-846c-4d82-b891-6715daa034dc/thumbnail_7bf13db5.jpg	377.2 KiB	270.3 KiB
stephanie_h_smith_the_haunting_history_of_the_paris_catacombs `a.relative > div.relative > div.aspect-h-9 > img.object-cover`	/r/talkstar-assets.s3.amazonaws.com/production/talks/talk...	21.4 KiB	7.9 KiB
How to make your idea impossible to ignore `div.swiper-slide > div.relative > a.block > img.object-cover`	/r/talkstar-assets.s3.amazonaws.com/production/talks/talk...	61.3 KiB	6.0 KiB
ted_idea_search_how_to_change_someone_s_perspective `a.relative > div.relative > div.aspect-h-9 > img.object-cover`	/r/talkstar-assets.s3.amazonaws.com/production/talks/talk...	19.5 KiB	6.0 KiB

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.

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.

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.

Estimated savings: 640 ms 49.4 KiB

URL	Transfer Size	Est Savings
www.ted.com/_next/static/chunks/0n0wbzcutlqve.css	50.8 KiB	49.4 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.

Estimated savings: 880 ms 1.8 MiB

URL	Transfer Size	Est Savings
static.fundraiseup.com/checkout.098fc4d30f8503a0.js	396.8 KiB	354.5 KiB
media.begenuin.com/sdk/chunks/feed-C4rzC3fy.js	194.7 KiB	172.3 KiB
media.begenuin.com/sdk/chunks/index-8EYXbSqT.js	285.8 KiB	159.8 KiB
cdn.yourbow.com/ted/hbyb.js	195.8 KiB	139.7 KiB
/pagead/managed/js/gpt/m202603310101/pubads_impl.js	182.4 KiB	126.0 KiB
media.begenuin.com/sdk/chunks/vendor-forms-BRAWdd6O.js	159.0 KiB	119.5 KiB
static.fundraiseup.com/checkout-sentry-vendor.dda4c7629502a974.js	111.7 KiB	111.7 KiB
media.begenuin.com/sdk/chunks/vendor-animation-Cov7gVAf.js	130.2 KiB	99.4 KiB
static.fundraiseup.com/checkout-vendors.78ab7844d94042df.js	105.2 KiB	87.3 KiB
www.ted.com/_next/static/chunks/03515l8a52213.js	83.8 KiB	61.9 KiB
media.begenuin.com/sdk/chunks/vendor-radix-pOLIplXM.js	54.5 KiB	48.4 KiB
www.ted.com/_next/static/chunks/0huhu2townkqs.js	70.0 KiB	45.5 KiB
www.ted.com/_next/static/chunks/0qsx.-_r~wvh_.js	35.3 KiB	35.1 KiB
ak.sail-horizon.com/spm/spm.v1.min.js	54.8 KiB	33.1 KiB
www.ted.com/_next/static/chunks/04.r1oawx08nq.js	50.9 KiB	32.0 KiB
media.begenuin.com/sdk/chunks/vendor-external-O5cr870B.js	74.5 KiB	26.6 KiB
cdn.fundraiseup.com/widget/AVFWZGUV	68.6 KiB	26.1 KiB
media.begenuin.com/sdk/chunks/vendor-utils-CoqRx-ES.js	73.9 KiB	24.3 KiB
media.begenuin.com/sdk/chunks/vendor-react-query-Cdnp5BQu.js	45.6 KiB	24.0 KiB
static.fundraiseup.com/checkout-styles.17c762c93d89a7dd.js	22.1 KiB	22.1 KiB
b-code.liadm.com/a-091g.min.js	46.6 KiB	21.9 KiB
www.ted.com/_next/static/chunks/0r4mnruw7f0l0.js	38.7 KiB	20.5 KiB
static.fundraiseup.com/1a7e238f14ca.elementsApi.js	37.1 KiB	20.4 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.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	6.1 s	213 ms	0.0 ms
www.ted.com/_next/static/chunks/0ujyvbd_j_-yn.js	4.6 s	310 ms	10 ms
www.ted.com/_next/static/chunks/0ceke3n72t5kx.js	4.1 s	2.4 s	26 ms
www.ted.com/	3.5 s	81 ms	8.3 ms
cmp.osano.com/AzqTgHUHUGJa7gInt/9e4d9097-fa02-474b-9ac9-958cf3f54337/osano.js	1.8 s	1.3 s	30 ms
www.ted.com/_next/static/chunks/0.jna.w-3mqdg.js	1.6 s	1.1 s	0.4 ms
www.ted.com/_next/static/chunks/turbopack-0wz1ql9lnw2yx.js	891 ms	884 ms	1.8 ms
www.ted.com/_next/static/chunks/0g32t8vp0x1r6.js	856 ms	549 ms	2.1 ms
media.begenuin.com/sdk/chunks/index-8EYXbSqT.js	851 ms	603 ms	7.2 ms
media.begenuin.com/sdk/chunks/vendor-external-O5cr870B.js	722 ms	468 ms	1.8 ms
www.ted.com/_next/static/chunks/turbopack-0ij34tcl~3kf8.js	652 ms	614 ms	1.6 ms
www.ted.com/_next/static/chunks/0r4mnruw7f0l0.js	638 ms	124 ms	17 ms
cdn.yourbow.com/ted/hbyb.js	551 ms	464 ms	84 ms
/pagead/managed/js/gpt/m202603310101/pubads_impl.js	467 ms	385 ms	79 ms
www.ted.com/_next/static/chunks/0ku8i~ce5wfyc.js	406 ms	221 ms	0.9 ms
static.fundraiseup.com/checkout-vendors.78ab7844d94042df.js	363 ms	323 ms	39 ms
cdn.fundraiseup.com/widget/AVFWZGUV	336 ms	261 ms	34 ms
static.fundraiseup.com/checkout.098fc4d30f8503a0.js	279 ms	3.1 ms	275 ms
static.cdn.prismic.io/prismic.js?new=true&repo=tedconf	274 ms	266 ms	4.2 ms
www.ted.com/_next/static/chunks/14xs2sw89b2_l.js	235 ms	205 ms	11 ms
www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js	207 ms	58 ms	11 ms
ak.sail-horizon.com/spm/spm.v1.min.js	202 ms	139 ms	22 ms
www.ted.com/_next/static/chunks/0huhu2townkqs.js	199 ms	149 ms	50 ms
securepubads.g.doubleclick.net/tag/js/gpt.js	139 ms	123 ms	15 ms
www.ted.com/_next/static/chunks/00e0.1-7ldep6.js	128 ms	124 ms	1.3 ms
static.fundraiseup.com/1a7e238f14ca.elementsApi.js	127 ms	103 ms	17 ms
b-code.liadm.com/a-091g.min.js	112 ms	92 ms	19 ms
www.ted.com/_next/static/chunks/0n0wbzcutlqve.css	93 ms	0.0 ms	0.0 ms
www.ted.com/_next/static/chunks/0.mqsbzt-om0r.js	92 ms	86 ms	0.6 ms
www.ted.com/_next/static/chunks/0mp.pzycqqn0q.js	90 ms	87 ms	0.9 ms
cmp.osano.com/AzqTgHUHUGJa7gInt/9e4d9097-fa02-474b-9ac9-958cf3f54337/osano-ui.js	84 ms	48 ms	16 ms
www.ted.com/_next/static/chunks/114-_~-gmr6~n.js	81 ms	76 ms	2.6 ms
www.ted.com/_next/static/chunks/075sn8uv1jrmg.js	76 ms	74 ms	1.2 ms
www.ted.com/_next/static/chunks/0j5dxic8qrkqa.js	70 ms	63 ms	0.6 ms
www.ted.com/_next/static/chunks/03515l8a52213.js	65 ms	5.5 ms	56 ms
www.ted.com/_next/static/chunks/0ca7ic43xt64o.js	56 ms	26 ms	5.3 ms
www.ted.com/_next/static/chunks/0jz52-v-k35hq.js	52 ms	48 ms	0.6 ms
www.ted.com/_next/static/chunks/0culyoxm4rnl-.js	50 ms	3.7 ms	45 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

Category	Time Spent
Script Evaluation	12.7 s
Other	11.9 s
Style & Layout	4.4 s
Script Parsing & Compilation	1.3 s
Rendering	1.3 s
Garbage Collection	338 ms
Parse HTML & CSS	279 ms

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

Estimated savings: 0.0 ms 326.8 KiB

URL	Transfer Size	Est Savings
media.begenuin.com/sdk/chunks/index-8EYXbSqT.js	285.8 KiB	97.5 KiB
media.begenuin.com/sdk/chunks/feed-C4rzC3fy.js	194.7 KiB	68.4 KiB
media.begenuin.com/sdk/chunks/vendor-forms-BRAWdd6O.js	159.0 KiB	41.1 KiB
media.begenuin.com/sdk/chunks/vendor-animation-Cov7gVAf.js	130.2 KiB	32.3 KiB
media.begenuin.com/sdk/chunks/vendor-utils-CoqRx-ES.js	73.9 KiB	28.4 KiB
media.begenuin.com/sdk/chunks/vendor-external-O5cr870B.js	74.5 KiB	22.0 KiB
media.begenuin.com/sdk/chunks/vendor-radix-pOLIplXM.js	54.5 KiB	19.0 KiB
media.begenuin.com/sdk/chunks/vendor-react-query-Cdnp5BQu.js	45.6 KiB	13.6 KiB
media.begenuin.com/sdk/chunks/embed-YjuMENHE.js	12.0 KiB	4.5 KiB

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

URL	Transfer Size
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/1080p/video2.ts	1.4 MiB
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/1080p/video1.ts	1.2 MiB
vz-8bbc7bbf-a1e.b-cdn.net/c0618340-2751-4cb8-bcbd-3992c694dac3/720p/video2.ts	895.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/480p/video2.ts	779.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/480p/video0.ts	741.9 KiB
vz-8bbc7bbf-a1e.b-cdn.net/49a16d6c-9839-438c-a814-ee646f5b515f/720p/video2.ts	735.1 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/480p/video1.ts	726.6 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/480p/video2.ts	669.9 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/480p/video1.ts	653.9 KiB
vz-8bbc7bbf-a1e.b-cdn.net/c0618340-2751-4cb8-bcbd-3992c694dac3/480p/video1.ts	564.4 KiB

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

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Font display

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 16 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`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 260 ms

●Server Backend Latencies 400 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 30 ms

●Avoid large layout shifts 2 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.

Names and labels

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

Failing Elements
div#hero-slider-images > div.cloned-standard-hero-slider-nav-prev > div.absolute > button.group `div#hero-slider-images > div.cloned-standard-hero-slider-nav-prev > div.absolute > button.group`
div#hero-slider-images > div.cloned-standard-hero-slider-nav-next > div.absolute > button.group `div#hero-slider-images > div.cloned-standard-hero-slider-nav-next > div.absolute > button.group`
div.gencl:absolute > div.gencl:absolute > div.gencl:flex > button.gencl:inline-flex `div.gencl:absolute > div.gencl:absolute > div.gencl:flex > button.gencl:inline-flex`
div.gencl:absolute > div.gencl:absolute > div.gencl:flex > button.gencl:inline-flex `div.gencl:absolute > div.gencl:absolute > div.gencl:flex > button.gencl:inline-flex`
div.gencl:absolute > div.gencl:absolute > div.gencl:flex > button.gencl:inline-flex `div.gencl:absolute > div.gencl:absolute > div.gencl:flex > button.gencl:inline-flex`
body.antialiased > section#sailthru-overlay-container > div.sailthru-overlay > button.sailthru-overlay-close `body.antialiased > section#sailthru-overlay-container > div.sailthru-overlay > button.sailthru-overlay-close`

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Failing Elements
div.flex > div.mb-8 > div.relative > input.newsletter-input `div.flex > div.mb-8 > div.relative > input.newsletter-input`

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.

Failing Elements
div.mx-auto > div.flex > div.h-100 > a `div.mx-auto > div.flex > div.h-100 > a`
div.mx-auto > div.flex > div.h-100 > a `div.mx-auto > div.flex > div.h-100 > a`

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

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

Failing Elements
head > meta `head > meta`

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

Failing Elements
HEALTH `div.flex > div.flex > div.flex > a.relative`
SOCIAL CHANGE `div.flex > div.flex > div.flex > a.relative`
CULTURE `div.flex > div.flex > div.flex > a.relative`
CULTURE `div.flex > div.flex > div.flex > a.relative`
PHILOSOPHY `div.flex > div.flex > div.flex > a.relative`
ACTIVISM `div.flex > div.flex > div.flex > a.relative`
CULTURE `div.flex > div.grid > div.flex > a.relative`
CULTURE `div.flex > div.grid > div.flex > a.relative`
SOCIAL CHANGE `div.flex > div.grid > div.flex > a.relative`
SOCIAL CHANGE `div.flex > div.grid > div.flex > a.relative`
CULTURE `div.flex > div.grid > div.flex > a.relative`
HEALTH `div.flex > div.grid > div.flex > a.relative`

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]` values are valid

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

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

●Image elements have `[alt]` attributes

●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

●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.

●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

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

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

●Identical links have the same purpose.

○`[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

○`[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

○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

○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.

○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.

100

Best Practices

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

918 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

3.28 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

1.04 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.026

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

3.57 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

8.59 s

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.

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

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

Request	Cache TTL	Transfer Size
pl.tedcdn.com/fonts/InterVariable.woff2	0.0 ms	344.6 KiB
cdn.yourbow.com/ted/hbyb.js	3600.0 s	196.3 KiB
cdn.fundraiseup.com/widget/AVFWZGUV	0.0 ms	69.5 KiB
ak.sail-horizon.com/spm/spm.v1.min.js	600.0 s	55.2 KiB
b-code.liadm.com/a-091g.min.js	86400.0 s	46.9 KiB
cmp.osano.com/AzqTgHUHUGJa7gInt/9e4d9097-fa02-474b-9ac9-958cf3f54337/osano-ui.js	86400.0 s	31.0 KiB
static.cdn.prismic.io/prismic.js?new=true&repo=tedconf	0.0 ms	9.8 KiB
cdn.rudderlabs.com/3.21.0/modern/plugins/rsa-plugins-RetryQueue.min.js	3600.0 s	3.9 KiB
cdn.rudderlabs.com/3.21.0/modern/plugins/rsa-plugins-common.min.js	3600.0 s	3.5 KiB
vz-8bbc7bbf-a1e.b-cdn.net/44455006-1a54-4b23-bfe8-c6187b9478d5/480p/video.m3u8	30.0 s	1.8 KiB
vz-8bbc7bbf-a1e.b-cdn.net/c0618340-2751-4cb8-bcbd-3992c694dac3/480p/video.m3u8	30.0 s	1.7 KiB
vz-8bbc7bbf-a1e.b-cdn.net/c0618340-2751-4cb8-bcbd-3992c694dac3/720p/video.m3u8	30.0 s	1.7 KiB
vz-8bbc7bbf-a1e.b-cdn.net/42e70133-846c-4d82-b891-6715daa034dc/720p/video.m3u8	30.0 s	1.7 KiB
vz-8bbc7bbf-a1e.b-cdn.net/42e70133-846c-4d82-b891-6715daa034dc/480p/video.m3u8	30.0 s	1.7 KiB
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/1080p/video.m3u8	30.0 s	1.6 KiB
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/480p/video.m3u8	30.0 s	1.6 KiB
vz-8bbc7bbf-a1e.b-cdn.net/49a16d6c-9839-438c-a814-ee646f5b515f/720p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/49a16d6c-9839-438c-a814-ee646f5b515f/480p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/7740cf90-8213-4c38-8b2f-68813d73045d/480p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/480p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/720p/video.m3u8	30.0 s	1.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a1599794-4c67-4c14-9161-d08bf188b37c/720p/video.m3u8	30.0 s	1.3 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a1599794-4c67-4c14-9161-d08bf188b37c/480p/video.m3u8	30.0 s	1.3 KiB
cdn.rudderlabs.com/3.21.0/modern/plugins/rsa-plugins-remote-XhrQueue.min.js	3600.0 s	1.6 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/720p/video.m3u8	30.0 s	1.2 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/480p/video.m3u8	30.0 s	1.2 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a442ca3a-9e00-40c5-8a76-33ee6472d589/480p/video.m3u8	30.0 s	1.1 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a442ca3a-9e00-40c5-8a76-33ee6472d589/720p/video.m3u8	30.0 s	1.1 KiB
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/44455006-1a54-4b23-bfe8-c6187b9478d5/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/42e70133-846c-4d82-b891-6715daa034dc/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a442ca3a-9e00-40c5-8a76-33ee6472d589/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/7740cf90-8213-4c38-8b2f-68813d73045d/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/a1599794-4c67-4c14-9161-d08bf188b37c/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/playlist.m3u8	30.0 s	1.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/49a16d6c-9839-438c-a814-ee646f5b515f/playlist.m3u8	30.0 s	925 B
vz-8bbc7bbf-a1e.b-cdn.net/c0618340-2751-4cb8-bcbd-3992c694dac3/playlist.m3u8	30.0 s	925 B
cdn.rudderlabs.com/3.21.0/modern/plugins/rsa-plugins.js	3600.0 s	989 B

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:209.988 source:map[column:137513 line:1 type:source-location url:https://www.ted.com/_next/static/chunks/0ceke3n72t5kx.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:56.803 source:map[type:text value:[unattributed]]] map[reflowTime:140.408 source:map[column:4871 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]] map[reflowTime:68.611 source:map[column:26857 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]] map[reflowTime:1.137 source:map[column:33340 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]] map[reflowTime:2.796 source:map[column:27358 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]] map[reflowTime:100.128 source:map[column:20327 line:0 type:source-location url:https://www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js urlProvider:network]] map[reflowTime:10.046 source:map[column:26 line:803 type:source-location url:https://media.begenuin.com/sdk/chunks/vendor-external-O5cr870B.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

	URL	Resource Size	Est Savings
The danger of silence `div.flex > a.relative > div.relative > img.rounded-xs`	/r/pe.tedcdn.com/images/ted/2fffe2847c3828a2827be3fc0e9c9...	326.1 KiB	310.3 KiB
Even healthy couples fight — the difference is how `div.flex > a.relative > div.relative > img.rounded-xs`	/r/talkstar-photos.s3.amazonaws.com/uploads/9c5af6c7-39cf...	156.2 KiB	146.1 KiB
david_fajgenbaum_how_nearly_dying_helped_me_discover_my_own_cure_and_many_more `a.relative > div.relative > div.aspect-h-9 > img.object-cover`	/r/talkstar-assets.s3.amazonaws.com/production/talks/talk...	197.2 KiB	120.2 KiB
div.flex > div.h-100 > a > img `div.flex > div.h-100 > a > img`	/r/images.prismic.io/tedconf/aZ97IMFoBIGEg04j_T26_Members...	89.8 KiB	50.8 KiB
rob_bredow_the_artist_driven_innovation_behind_the_films_we_love `a.order-2 > div.relative > div.aspect-h-9 > img.object-cover`	/r/talkstar-assets.s3.amazonaws.com/production/talks/talk...	22.8 KiB	9.3 KiB
stephanie_h_smith_the_haunting_history_of_the_paris_catacombs `a.relative > div.relative > div.aspect-h-9 > img.object-cover`	/r/talkstar-assets.s3.amazonaws.com/production/talks/talk...	21.4 KiB	7.9 KiB
ted_idea_search_what_makes_an_idea_stick `a.relative > div.relative > div.aspect-h-9 > img.object-cover`	/r/talkstar-assets.s3.amazonaws.com/production/talks/talk...	21.1 KiB	7.6 KiB
ted_idea_search_how_to_make_your_idea_impossible_to_ignore `a.relative > div.relative > div.aspect-h-9 > img.object-cover`	/r/talkstar-assets.s3.amazonaws.com/production/talks/talk...	19.6 KiB	6.1 KiB
ted_idea_search_how_to_change_someone_s_perspective `a.relative > div.relative > div.aspect-h-9 > img.object-cover`	/r/talkstar-assets.s3.amazonaws.com/production/talks/talk...	19.5 KiB	6.0 KiB

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

lhId: page-9-IMG

nodeLabel: jessy_kate_schingler_civilization_on_the_moon_and_what_it_means_for_life_on_ear…

path: 1,HTML,1,BODY,1,DIV,1,DIV,1,DIV,1,MAIN,0,DIV,1,SECTION,0,DIV,0,DIV,0,DIV,1,A,0,DIV,0,DIV,0,IMG

selector: a.relative > div.relative > div.aspect-h-9 > img.object-cover

snippet: <img alt="jessy_kate_schingler_civilization_on_the_moon_and_what_it_means_for_life_o…" loading="lazy" decoding="async" data-nimg="fill" class="object-cover" sizes="(min-width: 1200px) 580px, 50vw" srcset="https://pi.tedcdn.com/r/talkstar-photos.s3.amazonaws.com/uploads/809e3a01-…" src="https://pi.tedcdn.com/r/talkstar-photos.s3.amazonaws.com/uploads/809e3a01-…" style="position: absolute; height: 100%; width: 100%; inset: 0px;">

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.

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

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.

URL	Transfer Size	Duration
ak.sail-horizon.com/spm/spm.v1.min.js	55.2 KiB	319 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.

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.

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.

Estimated savings: 80 ms 71.5 KiB

URL	Transfer Size	Est Savings
www.ted.com/_next/static/chunks/0n0wbzcutlqve.css	50.8 KiB	48.5 KiB
media.begenuin.com/sdk/2.0.0/assets/web-sdk.css	29.0 KiB	23.0 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.

Estimated savings: 80 ms 1.7 MiB

URL	Transfer Size	Est Savings
static.fundraiseup.com/checkout.098fc4d30f8503a0.js	397.8 KiB	355.3 KiB
media.begenuin.com/sdk/chunks/feed-C4rzC3fy.js	194.6 KiB	172.2 KiB
media.begenuin.com/sdk/chunks/index-8EYXbSqT.js	285.6 KiB	163.5 KiB
/pagead/managed/js/gpt/m202604010101/pubads_impl.js?cb=31...	182.4 KiB	123.2 KiB
media.begenuin.com/sdk/chunks/vendor-forms-BRAWdd6O.js	159.0 KiB	119.5 KiB
static.fundraiseup.com/checkout-sentry-vendor.dda4c7629502a974.js	111.7 KiB	111.6 KiB
media.begenuin.com/sdk/chunks/vendor-animation-Cov7gVAf.js	130.2 KiB	99.5 KiB
cdn.yourbow.com/ted/hbyb.js	195.8 KiB	91.2 KiB
static.fundraiseup.com/checkout-vendors.78ab7844d94042df.js	105.2 KiB	87.3 KiB
www.ted.com/_next/static/chunks/03515l8a52213.js	83.8 KiB	61.9 KiB
media.begenuin.com/sdk/chunks/vendor-radix-pOLIplXM.js	54.5 KiB	49.1 KiB
www.ted.com/_next/static/chunks/0huhu2townkqs.js	70.0 KiB	45.5 KiB
ak.sail-horizon.com/spm/spm.v1.min.js	54.8 KiB	40.1 KiB
www.ted.com/_next/static/chunks/0qsx.-_r~wvh_.js	35.2 KiB	35.1 KiB
www.ted.com/_next/static/chunks/04.r1oawx08nq.js	50.9 KiB	31.4 KiB
media.begenuin.com/sdk/chunks/vendor-external-O5cr870B.js	74.5 KiB	26.6 KiB
cdn.fundraiseup.com/widget/AVFWZGUV	68.6 KiB	26.1 KiB
media.begenuin.com/sdk/chunks/vendor-utils-CoqRx-ES.js	73.9 KiB	24.3 KiB
media.begenuin.com/sdk/chunks/vendor-react-query-Cdnp5BQu.js	45.6 KiB	24.0 KiB
static.fundraiseup.com/checkout-styles.17c762c93d89a7dd.js	22.1 KiB	22.1 KiB
b-code.liadm.com/a-091g.min.js	46.6 KiB	21.9 KiB
static.fundraiseup.com/1a7e238f14ca.elementsApi.js	37.3 KiB	20.5 KiB
www.ted.com/_next/static/chunks/0r4mnruw7f0l0.js	38.7 KiB	20.5 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.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	1.9 s	50 ms	0.0 ms
www.ted.com/_next/static/chunks/0ceke3n72t5kx.js	947 ms	624 ms	6.3 ms
www.ted.com/	906 ms	12 ms	2.0 ms
www.ted.com/_next/static/chunks/0ujyvbd_j_-yn.js	631 ms	47 ms	2.6 ms
www.ted.com/_next/static/chunks/0.jna.w-3mqdg.js	377 ms	270 ms	0.1 ms
cmp.osano.com/AzqTgHUHUGJa7gInt/9e4d9097-fa02-474b-9ac9-958cf3f54337/osano.js	317 ms	291 ms	7.4 ms
www.ted.com/_next/static/chunks/turbopack-0wz1ql9lnw2yx.js	193 ms	192 ms	0.4 ms
www.ted.com/_next/static/chunks/turbopack-0ij34tcl~3kf8.js	162 ms	147 ms	0.4 ms
www.ted.com/_next/static/chunks/146slgz6dfxmj.js	155 ms	57 ms	1.5 ms
www.ted.com/_next/static/chunks/0ku8i~ce5wfyc.js	155 ms	54 ms	1.7 ms
media.begenuin.com/sdk/chunks/vendor-external-O5cr870B.js	153 ms	94 ms	0.5 ms
/pagead/managed/js/gpt/m202604010101/pubads_impl.js?cb=31...	152 ms	116 ms	20 ms
cdn.yourbow.com/ted/hbyb.js	149 ms	125 ms	21 ms
media.begenuin.com/sdk/chunks/index-8EYXbSqT.js	140 ms	99 ms	1.8 ms
www.ted.com/_next/static/chunks/0ez-x3h3dxkrv.js	125 ms	8.4 ms	2.7 ms
www.ted.com/_next/static/chunks/0r4mnruw7f0l0.js	122 ms	26 ms	3.9 ms
cdn.fundraiseup.com/widget/AVFWZGUV	107 ms	84 ms	9.1 ms
www.ted.com/_next/static/chunks/0g32t8vp0x1r6.js	107 ms	98 ms	0.5 ms
static.fundraiseup.com/checkout-vendors.78ab7844d94042df.js	104 ms	84 ms	10 ms
static.cdn.prismic.io/prismic.js?new=true&repo=tedconf	65 ms	63 ms	1.1 ms
www.ted.com/_next/static/chunks/14xs2sw89b2_l.js	64 ms	57 ms	1.7 ms
static.fundraiseup.com/checkout.098fc4d30f8503a0.js	62 ms	0.9 ms	61 ms
www.ted.com/_next/static/chunks/0ca7ic43xt64o.js	50 ms	31 ms	1.3 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

Category	Time Spent
Script Evaluation	3.1 s
Other	2.9 s
Style & Layout	1.1 s
Script Parsing & Compilation	320 ms
Rendering	233 ms
Garbage Collection	91 ms
Parse HTML & CSS	67 ms

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

Estimated savings: 0.0 ms 326.7 KiB

URL	Transfer Size	Est Savings
media.begenuin.com/sdk/chunks/index-8EYXbSqT.js	285.6 KiB	97.4 KiB
media.begenuin.com/sdk/chunks/feed-C4rzC3fy.js	194.6 KiB	68.4 KiB
media.begenuin.com/sdk/chunks/vendor-forms-BRAWdd6O.js	159.0 KiB	41.1 KiB
media.begenuin.com/sdk/chunks/vendor-animation-Cov7gVAf.js	130.2 KiB	32.3 KiB
media.begenuin.com/sdk/chunks/vendor-utils-CoqRx-ES.js	73.9 KiB	28.4 KiB
media.begenuin.com/sdk/chunks/vendor-external-O5cr870B.js	74.5 KiB	22.0 KiB
media.begenuin.com/sdk/chunks/vendor-radix-pOLIplXM.js	54.5 KiB	19.0 KiB
media.begenuin.com/sdk/chunks/vendor-react-query-Cdnp5BQu.js	45.6 KiB	13.6 KiB
media.begenuin.com/sdk/chunks/embed-YjuMENHE.js	12.0 KiB	4.5 KiB

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

URL	Transfer Size
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/1080p/video2.ts	1.4 MiB
vz-8bbc7bbf-a1e.b-cdn.net/bde3fe3d-fa23-4257-b5bb-c42dfa9086eb/1080p/video1.ts	1.2 MiB
vz-8bbc7bbf-a1e.b-cdn.net/c0618340-2751-4cb8-bcbd-3992c694dac3/720p/video2.ts	895.4 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/480p/video2.ts	779.0 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/480p/video0.ts	741.9 KiB
vz-8bbc7bbf-a1e.b-cdn.net/49a16d6c-9839-438c-a814-ee646f5b515f/720p/video2.ts	735.1 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/480p/video1.ts	726.6 KiB
vz-8bbc7bbf-a1e.b-cdn.net/e921c045-0f6e-4a88-a7cc-0695fa6b5153/480p/video2.ts	669.9 KiB
vz-8bbc7bbf-a1e.b-cdn.net/d8644e4c-8639-4796-b1fa-8eacec07c26a/480p/video1.ts	653.9 KiB
vz-8bbc7bbf-a1e.b-cdn.net/49a16d6c-9839-438c-a814-ee646f5b515f/720p/video1.ts	616.4 KiB

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

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Font display

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 16 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`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 250 ms

●Server Backend Latencies 400 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 40 ms

●Avoid large layout shifts 3 layout shifts found

○INP breakdown

Accessibility

Names and labels

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

Failing Elements
div.relative > div.z-50 > div.absolute > button.group `div.relative > div.z-50 > div.absolute > button.group`

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Failing Elements
div.flex > div.mb-8 > div.relative > input.newsletter-input `div.flex > div.mb-8 > div.relative > input.newsletter-input`

Failing Elements
div.mx-auto > div.flex > div.h-100 > a `div.mx-auto > div.flex > div.h-100 > a`
div.mx-auto > div.flex > div.h-100 > a `div.mx-auto > div.flex > div.h-100 > a`

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

Contrast

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

Failing Elements
CULTURE `div.grid > div.flex > a.relative > p.text-textPrimary-onLight`
Robin Buckley · 964K plays · 3 years ago `div.flex > div.grid > a.pr-5 > p.pt-2`
CULTURE `div.grid > div.flex > a.relative > p.text-textPrimary-onLight`
Michael Sheen · 1.27M plays · 3 years ago `div.flex > div.grid > a.pr-5 > p.pt-2`
SOCIAL CHANGE `div.grid > div.flex > a.relative > p.text-textPrimary-onLight`
Mena Fombo · 1.15M plays · 3 years ago `div.flex > div.grid > a.pr-5 > p.pt-2`
SOCIAL CHANGE `div.grid > div.flex > a.relative > p.text-textPrimary-onLight`
J Mase III · 1.28M plays · 3 years ago `div.flex > div.grid > a.pr-5 > p.pt-2`
CULTURE `div.grid > div.flex > a.relative > p.text-textPrimary-onLight`
Margaret Hall · 1.17M plays · 3 years ago `div.flex > div.grid > a.pr-5 > p.pt-2`
HEALTH `div.grid > div.flex > a.relative > p.text-textPrimary-onLight`
Sheetal DeCaria · 1.64M plays · 4 years ago `div.flex > div.grid > a.pr-5 > p.pt-2`

These are opportunities to improve the legibility of your content.

Best practices

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

Failing Elements
head > meta `head > meta`

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

Failing Elements
HEALTH `div.flex > div.flex > div.flex > a.relative`
SOCIAL CHANGE `div.flex > div.flex > div.flex > a.relative`
CULTURE `div.flex > div.flex > div.flex > a.relative`
CULTURE `div.flex > div.flex > div.flex > a.relative`
PHILOSOPHY `div.flex > div.flex > div.flex > a.relative`
CULTURE `div.flex > div.grid > div.flex > a.relative`
CULTURE `div.flex > div.grid > div.flex > a.relative`
SOCIAL CHANGE `div.flex > div.grid > div.flex > a.relative`
SOCIAL CHANGE `div.flex > div.grid > div.flex > a.relative`
CULTURE `div.flex > div.grid > div.flex > a.relative`
HEALTH `div.flex > div.grid > div.flex > a.relative`

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]` values are valid

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

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

●Image elements have `[alt]` attributes

●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.

●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

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●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

○`[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

○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.

○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.

Deprecation / Warning	Source
Topics	cdn.yourbow.com/ted/hbyb.js line 6, col 109841

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

Source	Description
www.ted.com/_next/static/chunks/0g32t8vp0x1r6.js	`[CMP Monitor] Osano failure: timeout Osano did not initialize within 2000ms`

●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

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

100

SEO

○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`

Results for https://www.ted.com

Site Health

Top Priorities (5)

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Names and labels

Best practices

Best Practices

SEO

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Names and labels

Contrast

Best practices

Best Practices

General

SEO

Keyboard Shortcuts