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Lighthouse Desktop

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

Audit breakdown by category with detailed findings.

40

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.

RequestCache TTLTransfer Size
static-cdn.jtvnw.net/previews-ttv/live_user_esl_dota2-640x360.jpg300.0 s61.4 KiB
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...600.0 s56.8 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_jynxzi-640x360.jpg300.0 s47.2 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_mooda-640x360.jpg300.0 s46.4 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_psychedeliacy-640x360.jpg300.0 s45.6 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_ow_esports-640x360.jpg300.0 s44.1 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_ohnepixel-640x360.jpg300.0 s37.1 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_bikerush-320x180.jpg300.0 s21.5 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_tomovids-320x180.jpg300.0 s19.7 KiB
/jtv_user_pictures/13357a20-699e-4f73-8f29-8e63d715ca85-p...14400.0 s26.3 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_esthonx-320x180.jpg300.0 s17.5 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_150k-320x180.jpg300.0 s17.1 KiB
/eppo/api/flag-config/v1/config?sdkName=js-sdk-client&sdk...300.0 s16.8 KiB
static-cdn.jtvnw.net/previews-ttv/live_user_allshifted-320x180.jpg300.0 s14.7 KiB
static-cdn.jtvnw.net/ttv-boxart/515025-188x250.jpg14400.0 s17.0 KiB
static-cdn.jtvnw.net/ttv-boxart/21779-188x250.jpg14400.0 s16.9 KiB
static-cdn.jtvnw.net/ttv-boxart/516575-188x250.jpg14400.0 s15.6 KiB
static-cdn.jtvnw.net/ttv-boxart/509658-188x250.jpg14400.0 s13.4 KiB
static-cdn.jtvnw.net/ttv-boxart/32399-188x250.jpg14400.0 s13.3 KiB
static-cdn.jtvnw.net/ttv-boxart/29595-188x250.jpg14400.0 s12.7 KiB
/jtv_user_pictures/04c65db8-ef62-4fb5-8cff-09f0521de151-p...14400.0 s12.1 KiB
/jtv_user_pictures/c2b85c38-cfdc-4c87-9c5b-80a6dcd2c4f5-p...14400.0 s10.6 KiB
/jtv_user_pictures/fe17c146-00ae-4e90-9c39-75fe40163cd5-p...14400.0 s9.7 KiB
/jtv_user_pictures/5742b015-e6ed-4f7c-a1dd-87cd88fe1eb9-p...14400.0 s9.2 KiB
/jtv_user_pictures/483a37ac-58fd-4e2f-8dc3-2c68a0164112-p...14400.0 s8.4 KiB
/jtv_user_pictures/e086d0a4-781d-49d6-9732-2d8f9516f9c0-p...14400.0 s8.1 KiB
/jtv_user_pictures/b532ac95-4050-42cb-9d5d-9666a243654c-p...14400.0 s8.0 KiB
www.gstatic.com/eureka/clank/146/cast_sender.js86400.0 s13.4 KiB
/jtv_user_pictures/3313f669-483c-4f60-bab4-c6e37bae2ecd-p...14400.0 s7.4 KiB
/jtv_user_pictures/8657d231-d382-4f5a-80bb-373c616281f1-p...14400.0 s5.4 KiB
/jtv_user_pictures/5742b015-e6ed-4f7c-a1dd-87cd88fe1eb9-p...14400.0 s5.1 KiB
/jtv_user_pictures/b532ac95-4050-42cb-9d5d-9666a243654c-p...14400.0 s4.9 KiB
/jtv_user_pictures/3313f669-483c-4f60-bab4-c6e37bae2ecd-p...14400.0 s4.5 KiB
/jtv_user_pictures/a54fbe1c-2719-4f79-bcd6-ef9b2fdb2257-p...14400.0 s4.2 KiB
sb.scorecardresearch.com/beacon.js86400.0 s6.7 KiB
/jtv_user_pictures/645d98a0-a2eb-48a3-b687-cfbc55243e4a-p...14400.0 s2.3 KiB
/jtv_user_pictures/b470b382-2bd7-489f-9755-1af47d0b0f6f-p...14400.0 s1.9 KiB
/jtv_user_pictures/645d98a0-a2eb-48a3-b687-cfbc55243e4a-p...14400.0 s1.5 KiB
/p2?c1=2&c2=6745306&ns_type=hidden&ns_st_sv=5.1.3.160420&...0.0 ms298 B
/p2?ax_uuid=8abca52130274576bc117cc403514ca1&c1=9&c2=3186...0.0 ms296 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:67.617 source:map[column:620292 line:1 type:source-location url:https://assets.twitch.tv/assets/2433-0b949759e40ba0e099da.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:60.907 source:map[type:text value:[unattributed]]] map[reflowTime:59.356 source:map[column:913 line:0 type:source-location url:https://assets.twitch.tv/assets/57621-813bb4d691c65c0d03cf.js urlProvider:network]] map[reflowTime:6.988 source:map[column:2996 line:0 type:source-location url:https://assets.twitch.tv/assets/57621-813bb4d691c65c0d03cf.js urlProvider:network]] map[reflowTime:2.563 source:map[column:43523 line:0 type:source-location url:https://assets.twitch.tv/assets/50866-60c020e8677f73a9b71a.js urlProvider:network]] map[reflowTime:10.728 source:map[column:6934 line:0 type:source-location url:https://assets.twitch.tv/assets/79058-307ba85d09ac48f03d14.js urlProvider:network]] map[reflowTime:1.846 source:map[column:44688 line:0 type:source-location url:https://assets.twitch.tv/assets/50866-60c020e8677f73a9b71a.js urlProvider:network]] map[reflowTime:22.412 source:map[column:2114 line:0 type:source-location url:https://assets.twitch.tv/assets/57621-813bb4d691c65c0d03cf.js urlProvider:network]] map[reflowTime:6.2 source:map[column:460040 line:0 type:source-location url:https://assets.twitch.tv/assets/74689-31992a1990c65430ed20.js urlProvider:network]] map[reflowTime:15.221 source:map[column:293692 line:0 type:source-location url:https://assets.twitch.tv/assets/player-core-variant-a-ff7c48ae575eb92518ff.js urlProvider:network]] map[reflowTime:0.744 source:map[column:289 line:2 type:source-location url: urlProvider:network]] map[reflowTime:0.786 source:map[column:289 line:2 type:source-location url: urlProvider:network]] map[reflowTime:3.264 source:map[column:31 line:2 type:source-location url: urlProvider:network]] map[reflowTime:2.512 source:map[column:31 line:2 type:source-location url: 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.

URLResource SizeEst Savings
HIGHLIGHTS: SPIRIT vs XTREME - ESL One Birmingham 2026 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/previews-ttv/live_user_esl_dota2-640x360.jpg60.9 KiB49.8 KiB
[460/730] 🐥 early bird gets the worm 🐥 40 streamer valorant tourney @ 5 et 🐥 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/previews-ttv/live_user_jynxzi-640x360.jpg46.6 KiB35.6 KiB
🟢 REACTS -> SOLO TO RADIANT -> WINNING JYNXZI'S VALORANT TOURNAMENT 🟢 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/previews-ttv/live_user_mooda-640x360.jpg45.9 KiB34.8 KiB
yapping + clearing hotp backlogs | !socials !support !watchthis a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/previews-ttv/live_user_psychedeliacy-640x360.jpg45.4 KiB34.4 KiB
[DROPS] OWCS 2026 | NA/EMEA | Stage 1 Week 3 Day 1 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/previews-ttv/live_user_ow_esports-640x360.jpg43.9 KiB32.8 KiB
🔴REACTING MRBEAST'S $1M STREAMER CHALLENGE🔴 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/previews-ttv/live_user_ohnepixel-640x360.jpg36.9 KiB26.1 KiB
EsthonX Avatar div.Layout-sc-1xcs6mc-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/13357a20-699e-4f73-8f29-8e63d715ca85-p...26.2 KiB25.8 KiB
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_bikerush-320x180.jpg21.3 KiB11.9 KiB
a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/04c65db8-ef62-4fb5-8cff-09f0521de151-p...12.0 KiB11.8 KiB
a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/c2b85c38-cfdc-4c87-9c5b-80a6dcd2c4f5-p...10.5 KiB10.4 KiB
Overwatch cover image div.ScTransitionBase-sc-hx4quq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/ttv-boxart/515025-188x250.jpg16.5 KiB10.3 KiB
League of Legends cover image div.ScTransitionBase-sc-hx4quq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/ttv-boxart/21779-188x250.jpg16.4 KiB10.2 KiB
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_tomovids-320x180.jpg19.5 KiB10.2 KiB
a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/fe17c146-00ae-4e90-9c39-75fe40163cd5-p...9.6 KiB9.5 KiB
VALORANT cover image div.ScTransitionBase-sc-hx4quq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/ttv-boxart/516575-188x250.jpg15.4 KiB9.2 KiB
a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/5742b015-e6ed-4f7c-a1dd-87cd88fe1eb9-p...9.1 KiB9.0 KiB
a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/483a37ac-58fd-4e2f-8dc3-2c68a0164112-p...8.4 KiB8.2 KiB
a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/e086d0a4-781d-49d6-9732-2d8f9516f9c0-p...8.0 KiB7.9 KiB
Broadcasting a Co-Stream a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/b532ac95-4050-42cb-9d5d-9666a243654c-p...7.9 KiB7.8 KiB
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_esthonx-320x180.jpg17.1 KiB7.7 KiB
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_150k-320x180.jpg16.9 KiB7.5 KiB
CoolCat div.Layout-sc-1xcs6mc-0 > div.Layout-sc-1xcs6mc-0 > div.Layout-sc-1xcs6mc-0 > img.tw-image
assets.twitch.tv/assets/coolcat-edacb6fbd813ce2f0272.png7.6 KiB7.4 KiB
a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/3313f669-483c-4f60-bab4-c6e37bae2ecd-p...7.3 KiB7.2 KiB
Just Chatting cover image div.ScTransitionBase-sc-hx4quq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/ttv-boxart/509658-188x250.jpg13.2 KiB7.0 KiB
Counter-Strike cover image div.ScTransitionBase-sc-hx4quq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/ttv-boxart/32399-188x250.jpg13.1 KiB7.0 KiB
Dota 2 cover image div.ScTransitionBase-sc-hx4quq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
static-cdn.jtvnw.net/ttv-boxart/29595-188x250.jpg12.5 KiB6.3 KiB
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_allshifted-320x180.jpg14.5 KiB5.1 KiB
psychedeliacy a.ScCoreLink-sc-16kq0mq-0 > div.ScAspectRatio-sc-18km980-1 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/8657d231-d382-4f5a-80bb-373c616281f1-p...5.3 KiB5.0 KiB
ohnePixel a.ScCoreLink-sc-16kq0mq-0 > div.ScAspectRatio-sc-18km980-1 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/5742b015-e6ed-4f7c-a1dd-87cd88fe1eb9-p...5.0 KiB4.8 KiB
https://assets.twitch.tv/assets/An-AmazonCompanyBlack-e5a905ee39488e6a10cf.png section#front-page-main-content > div.Layout-sc-1xcs6mc-0 > div.Layout-sc-1xcs6mc-0 > img.tw-image
assets.twitch.tv/assets/An-AmazonCompanyBlack-e5a905ee39488e6a10cf.png5.0 KiB4.6 KiB
ow_esports is Broadcasting a Co-Stream a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/b532ac95-4050-42cb-9d5d-9666a243654c-p...4.8 KiB4.5 KiB
ESL_DOTA2 a.ScCoreLink-sc-16kq0mq-0 > div.ScAspectRatio-sc-18km980-1 > div.ScAvatar-sc-144b42z-0 > img.InjectLayout-sc-1i43xsx-0
/jtv_user_pictures/3313f669-483c-4f60-bab4-c6e37bae2ecd-p...4.4 KiB4.2 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:137.003 label:Time to first byte subpart:timeToFirstByte] map[duration:2552.735 label:Resource load delay subpart:resourceLoadDelay] map[duration:182.094 label:Resource load duration subpart:resourceLoadDuration] map[duration:123.785 label:Element render delay subpart:elementRenderDelay]]
lhId: page-1-IMG
nodeLabel: [460/730] 🐥 early bird gets the worm 🐥 40 streamer valorant tourney @ 5 et 🐥
path: 1,HTML,1,BODY,0,DIV,0,DIV,0,DIV,1,DIV,1,MAIN,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,1,DIV,4,DIV,0,A,0,DIV,0,DIV,1,IMG
selector: a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
snippet: <img alt="[460/730] 🐥 early bird gets the worm 🐥 40 streamer valorant tourney @ 5 et…" class="tw-image" src="https://static-cdn.jtvnw.net/previews-ttv/live_user_jynxzi-640x360.jpg">

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-1-IMG
nodeLabel: [460/730] 🐥 early bird gets the worm 🐥 40 streamer valorant tourney @ 5 et 🐥
path: 1,HTML,1,BODY,0,DIV,0,DIV,0,DIV,1,DIV,1,MAIN,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,1,DIV,4,DIV,0,A,0,DIV,0,DIV,1,IMG
selector: a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > div.ScAspectRatio-sc-18km980-1 > img.tw-image
snippet: <img alt="[460/730] 🐥 early bird gets the worm 🐥 40 streamer valorant tourney @ 5 et…" class="tw-image" src="https://static-cdn.jtvnw.net/previews-ttv/live_user_jynxzi-640x360.jpg">

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

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.

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

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.

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

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.

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.

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.

CategoryTime Spent
Script Evaluation5.0 s
Other916 ms
Style & Layout452 ms
Script Parsing & Compilation313 ms
Rendering177 ms
Garbage Collection155 ms
Parse HTML & CSS29 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 reasonFailure type
The page has an unload handler in the main frame.Actionable
Pages with WebSocket cannot enter back/forward cache.Pending browser support

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 2.5 KiB
URLTransfer SizeEst Savings
html, body, div, span, applet, object, iframe, h1, h2, h3...40.8 KiB2.5 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 29.1 KiB
URLTransfer SizeEst Savings
html, body, div, span, applet, object, iframe, h1, h2, h3...40.8 KiB29.1 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
https://assets.twitch.tv/assets/An-AmazonCompanyBlack-e5a905ee39488e6a10cf.png section#front-page-main-content > div.Layout-sc-1xcs6mc-0 > div.Layout-sc-1xcs6mc-0 > img.tw-image
assets.twitch.tv/assets/An-AmazonCompanyBlack-e5a905ee39488e6a10cf.png

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
Modern HTTP
Render blocking requests
Optimize viewport for mobile
Minify JavaScript
User Timing marks and measures 2 user timings
Avoid long main-thread tasks 17 long tasks found
Network Requests
Network Round Trip Times 240 ms
Server Backend Latencies 450 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 1 layout shift found
INP breakdown
Avoid non-composited animations
91

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

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > iframe#amznidpxl body > iframe#amznidpxl

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.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
HIGHLIGHTS: SPIRIT vs XTREME - ESL One Birmingham 2026 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > button.ScCoreLink-sc-16kq0mq-0 > h4.CoreText-sc-1txzju1-0
🔴REACTING MRBEAST'S $1M STREAMER CHALLENGE🔴 a.ScCoreLink-sc-16kq0mq-0 > div.Layout-sc-1xcs6mc-0 > button.ScCoreLink-sc-16kq0mq-0 > h4.CoreText-sc-1txzju1-0

These are opportunities to improve keyboard navigation in your application.

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
Dota 2 div.Layout-sc-1xcs6mc-0 > div.ScTextWrapper-sc-10mto54-1 > p.CoreText-sc-1txzju1-0 > a.ScCoreLink-sc-16kq0mq-0
Just Chatting div.Layout-sc-1xcs6mc-0 > div.ScTextWrapper-sc-10mto54-1 > p.CoreText-sc-1txzju1-0 > a.ScCoreLink-sc-16kq0mq-0
Overwatch div.Layout-sc-1xcs6mc-0 > div.ScTextWrapper-sc-10mto54-1 > p.CoreText-sc-1txzju1-0 > a.ScCoreLink-sc-16kq0mq-0

These items highlight common accessibility best practices.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
HIGHLIGHTS: SPIRIT vs XTREME - ESL One Birmingham 2026 ESL_DOTA2 div.Layout-sc-1xcs6mc-0 > div.Layout-sc-1xcs6mc-0 > div.ScTextWrapper-sc-10mto54-1 > a.ScCoreLink-sc-16kq0mq-0
[460/730] 🐥 early bird gets the worm 🐥 40 streamer valorant tourney @ 5 et 🐥 J… div.Layout-sc-1xcs6mc-0 > div.Layout-sc-1xcs6mc-0 > div.ScTextWrapper-sc-10mto54-1 > a.ScCoreLink-sc-16kq0mq-0
Main Broadcast: [DROPS] OWCS 2026 | NA/EMEA | Stage 1 Week 3 Day 1 ow_esports div.Layout-sc-1xcs6mc-0 > div.ScTextWrapper-sc-10mto54-1 > div.Layout-sc-1xcs6mc-0 > a.ScCoreLink-sc-16kq0mq-0
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
Form elements have associated labels
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.
Links have a discernible name
No element has a `[tabindex]` value greater than 0
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
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
The document does not use `<meta http-equiv="refresh">`
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
`<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.
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.
69

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_allshifted-320x180.jpg750 x 300 (2.50)320 x 180 (1.78)
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_tomovids-320x180.jpg750 x 300 (2.50)320 x 180 (1.78)
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_esthonx-320x180.jpg750 x 300 (2.50)320 x 180 (1.78)
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_150k-320x180.jpg750 x 300 (2.50)320 x 180 (1.78)
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_bikerush-320x180.jpg750 x 300 (2.50)320 x 180 (1.78)

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.

URLDisplayed sizeActual sizeExpected size
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_150k-320x180.jpg750 x 300320 x 180750 x 300
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_allshifted-320x180.jpg750 x 300320 x 180750 x 300
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_bikerush-320x180.jpg750 x 300320 x 180750 x 300
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_esthonx-320x180.jpg750 x 300320 x 180750 x 300
div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0 div > div.featured-content-carousel-featured-item > div.Layout-sc-1xcs6mc-0 > img.InjectLayout-sc-1i43xsx-0
static-cdn.jtvnw.net/previews-ttv/live_user_tomovids-320x180.jpg750 x 300320 x 180750 x 300

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 / WarningSource
Unload event listeners are deprecated and will be removed.
SharedStorage
line 2, col 31

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.

SourceDescription
Failed to load resource: the server responded with a status of 429 ()
Failed to load resource: the server responded with a status of 429 (Too Many Requests)

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
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
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`

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