Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js	1200.0 s	257.5 KiB
/6af07a2d-d0d3-4dfd-961a-bab066126220-web.js	900.0 s	226.3 KiB
s.ntv.io/serve/load.js	3600.0 s	251.1 KiB
htlbid.com/build/9c2d0970-f245-4983-aa9a-d65d86326253/hnpbid.js	600.0 s	146.2 KiB
/signals/config/822415974517712?v=2.9.303&r=stable&domain...	1200.0 s	125.1 KiB
/scripts/a5e03e178aaf9b41b3fc69428362339bd7ba9a606118acee...	3600.0 s	130.2 KiB
assets-jpcust.jwpsrv.com/thumbnails/95okujz4-320.jpg	900.0 s	116.1 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
c.amazon-adsystem.com/aax2/apstag.js	3600.0 s	91.0 KiB
assets-jpcust.jwpsrv.com/thumbnails/13cs7va3-320.jpg	900.0 s	75.1 KiB
cdn.jwplayer.com/v2/sites/l2mFHLnd/player.js	180.0 s	67.9 KiB
ssl.p.jwpcdn.com/player/services/vertical-video/v/0/index.js	1800.0 s	69.1 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	73.1 KiB
assets-jpcust.jwpsrv.com/thumbnails/cww31t2d-320.jpg	900.0 s	65.2 KiB
/hearstnewspapers-9rqIDoYfbw/_hearst-floors/prebid-load.js	3600.0 s	70.7 KiB
assets-jpcust.jwpsrv.com/thumbnails/22ywqc69-320.jpg	900.0 s	62.4 KiB
assets-jpcust.jwpsrv.com/thumbnails/7e9a6tnq-320.jpg	900.0 s	58.8 KiB
sdk.mrf.io/statics/marfeel-sdk.js?id=9657	1800.0 s	59.2 KiB
ak.sail-horizon.com/spm/spm.v1.min.js	600.0 s	48.1 KiB
cdn.p-n.io/pushly-sdk.min.js?domain_key=jITCn0UVwwm97QJE7mua9eBW8V3sTrkabjYG	300.0 s	45.6 KiB
assets-jpcust.jwpsrv.com/thumbnails/e5bdna3n-320.jpg	900.0 s	45.7 KiB
js.matheranalytics.com/static/ltm/ma86077/all/3/ml.br.js	3600.0 s	41.0 KiB
assets-jpcust.jwpsrv.com/thumbnails/vp2s22hh-320.jpg	900.0 s	34.4 KiB
cdn.jwplayer.com/v2/sites/l2mFHLnd/placements/P0hqU8dY/embed.js	600.0 s	32.9 KiB
assets-jpcust.jwpsrv.com/thumbnails/y37qop1h-320.jpg	900.0 s	31.9 KiB
d15kdpgjg3unno.cloudfront.net/oPS.js?cid=31	84600.0 s	60.3 KiB
www.sfchronicle.com/_next/static/css/068ea46319039004.css	0.0 ms	24.2 KiB
assets-jpcust.jwpsrv.com/thumbnails/3ljq5ksu-320.jpg	900.0 s	25.1 KiB
assets-jpcust.jwpsrv.com/thumbnails/8x0ierhl-320.jpg	900.0 s	24.7 KiB
www.redditstatic.com/ads/pixel.js	60.0 s	19.0 KiB
b-code.liadm.com/b-028s.min.js	86400.0 s	45.9 KiB
ssl.p.jwpcdn.com/player/services/jwpsrv/v/4/index.js	1800.0 s	19.4 KiB
/signals/config/169188807166631?v=2.9.303&r=stable&domain...	1200.0 s	18.5 KiB
ssl.p.jwpcdn.com/player/v/8.47.0/jwpsrv.js	900.0 s	18.0 KiB
js.adsrvr.org/up_loader.1.1.0.js	0.0 ms	12.4 KiB
ml314.com/tag.aspx?213	3600.0 s	12.7 KiB
collector-52720.us.tvsquared.com/tv2track.js	600.0 s	8.7 KiB
tags.srv.stackadapt.com/events.js	5.0 s	7.7 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	86400.0 s	18.7 KiB
s.yimg.com/wi/ytc.js	0.0 ms	7.1 KiB
hearstnews.solutions.cdn.optable.co/public-assets/hearstnews-sdk.js	86400.0 s	16.8 KiB
www.sfchronicle.com/_next/static/chunks/pages/_app-d6aa58070bba276d.js	604800.0 s	60.9 KiB
www.sfchronicle.com/_next/static/chunks/7787-e1f4fb6760aae2a2.js	604800.0 s	60.7 KiB
eus.rubiconproject.com/usync.js	58542.0 s	11.5 KiB
www.sfchronicle.com/_next/static/chunks/framework-f80cd7bf984bdace.js	604800.0 s	53.3 KiB
static.trueanthem.com/scripts/ta.c34341.js	86400.0 s	10.7 KiB
global.ketchcdn.com/web/v3/config/hearst/sfchronicle/boot.js	1200.0 s	4.7 KiB
www.sfchronicle.com/_next/static/chunks/main-61f7121325b2456a.js	604800.0 s	36.4 KiB
s.hdnux.com/photos/01/66/01/70/30940696/3/ratio3x2_480.webp	604800.0 s	31.0 KiB
sb.scorecardresearch.com/beacon.js	86400.0 s	6.7 KiB
s.hdnux.com/photos/01/66/00/02/30933168/8/ratio3x2_480.webp	604800.0 s	25.5 KiB
s.hdnux.com/photos/01/66/01/77/30941163/9/ratio3x2_480.webp	604800.0 s	23.4 KiB
ads.pubmatic.com/AdServer/js/userSync.js	28093.0 s	3.9 KiB
www.sfchronicle.com/_next/static/chunks/371.d0b67b8267614a27.js	604800.0 s	23.1 KiB
/6b971493-bc7d-4b6e-b933-34b4e401bc8d/launchpad-liveramp.js	0.0 ms	2.2 KiB
s.hdnux.com/photos/01/66/02/06/30941625/5/ratio3x2_480.webp	604800.0 s	18.3 KiB
s.hdnux.com/photos/01/66/02/50/30943766/3/ratio3x2_480.webp	604800.0 s	12.5 KiB
config.aps.amazon-adsystem.com/configs/3070	3600.0 s	1.4 KiB
www.sfchronicle.com/_next/static/chunks/7603-7fa2a85abf75eeb7.js	604800.0 s	10.1 KiB
htlbid.com/v3/sfchronicle.com/hnpbid.js	600.0 s	1.1 KiB
www.sfchronicle.com/_next/static/css/62e1ca45b1c25942.css	0.0 ms	978 B
js.adsrvr.org/universal_pixel.js	0.0 ms	934 B
/pagead/js/r20260420/r20110914/client/qs_click_protection...	1209600.0 s	8.9 KiB
www.sfchronicle.com/_next/static/chunks/3585-bec29a1795f8993d.js	604800.0 s	8.6 KiB
www.sfchronicle.com/_next/static/css/71d0a191502f96e9.css	0.0 ms	852 B
www.sfchronicle.com/_next/static/chunks/848.ae98995466ef862a.js	604800.0 s	7.5 KiB
s.hdnux.com/photos/01/65/35/75/30793561/3/ratio3x2_160.webp	604800.0 s	7.1 KiB
/rp.gif?ts=1776806727321&id=t2_2ya71mu5&event=PageVisit&m...	0.0 ms	666 B
www.sfchronicle.com/_next/static/chunks/9319.68326dd4a3d69dfb.js	604800.0 s	6.2 KiB
/pixel?c=bd8618c307ae9885a12561b7191e2cea&cid=97003320128...	0.0 ms	622 B
www.sfchronicle.com/_next/static/chunks/4671.fc8600817c69041f.js	604800.0 s	6.0 KiB
www.sfchronicle.com/_next/static/chunks/5431.468e9a6b7207f6c3.js	604800.0 s	5.5 KiB
sli.sfchronicle.com/baker?dtstmp=1776806723755	0.0 ms	542 B
www.sfchronicle.com/_next/static/chunks/6421.6faf573c18bcb34a.js	604800.0 s	5.1 KiB
www.sfchronicle.com/_next/static/chunks/5116.788238219538ac2e.js	604800.0 s	5.1 KiB
static.trueanthem.com/scripts/ta.js	86400.0 s	1.3 KiB
www.sfchronicle.com/_next/static/chunks/webpack-0a95a6af4cfaaed2.js	604800.0 s	5.0 KiB
www.sfchronicle.com/_next/static/chunks/4273.3eeb91012982a0d2.js	604800.0 s	4.7 KiB
www.sfchronicle.com/_next/static/chunks/6261.1f56168e55071dd3.js	604800.0 s	4.7 KiB
s.hdnux.com/photos/01/54/16/04/28369173/3/ratio3x2_160.webp	604800.0 s	4.3 KiB
link.rubiconproject.com/magnite/9095.js	52141.0 s	854 B
www.sfchronicle.com/_next/static/chunks/776-4247970bcba73f32.js	604800.0 s	4.0 KiB
/usersync/liveintent/?cb=%2F%2Fi.liadm.com%2Fs%2F35004%3F...	0.0 ms	405 B
/usersync/ogury/?cb=https%3A%2F%2Fms-cookie-sync.presage....	0.0 ms	405 B
/trv?bId=1776806727988.262.940593de-fae7-3287-90ab-82288b...	0.0 ms	387 B
/trv?bId=1776806727988.262.940593de-fae7-3287-90ab-82288b...	0.0 ms	387 B
/trv?bId=1776806729922.262.e7faedcc-7f89-34ba-b33e-d551d5...	0.0 ms	387 B
/trv?bId=1776806729922.262.e7faedcc-7f89-34ba-b33e-d551d5...	0.0 ms	387 B
dsp-trk.eskimi.com/utr?coId=11aa9045-d4e9-4e8a-b2ee-4393057e9f44&e=262	0.0 ms	386 B
/col?u=11aa9045-d4e9-4e8a-b2ee-4393057e9f44&ct=0&cntr=br&...	0.0 ms	386 B
/col?u=f8d9ad0d-06b0-47f6-8655-4b90b47fc2fc&ct=0&cntr=br&...	0.0 ms	386 B
dsp-trk.eskimi.com/utr?coId=f8d9ad0d-06b0-47f6-8655-4b90b47fc2fc&e=262	0.0 ms	386 B
dsp-trk.eskimi.com/tracking/load?cntr=br&cm=216837&cr=1392108&lt=21	0.0 ms	386 B
/event/pixel?eucid=CIWeDRDo81QYASDDmIr4CCgFMAQ4raAHQjAKJD...	0.0 ms	366 B
/event/pixel?eucid=CIWeDRDs-1QYASDDmIr4CCgFMAQ4raAHQjAKJG...	0.0 ms	366 B
ps.eyeota.net/pixel/bounce/?pid=r8hrb20&t=gif	0.0 ms	354 B
www.sfchronicle.com/_next/static/chunks/7430.cbb6f7bbe986d308.js	604800.0 s	3.5 KiB
www.sfchronicle.com/_next/static/chunks/9644.e53bb3d5ee65e531.js	604800.0 s	3.4 KiB
www.sfchronicle.com/publisher-asset-directory/optiCommon-1.3.0.js	604800.0 s	3.2 KiB
www.sfchronicle.com/_next/static/chunks/8286.da19d28791da16c9.js	604800.0 s	2.8 KiB
/tv2track.php?action_name=San%20Francisco%20Chronicle%20-...	0.0 ms	276 B
/collect?v=2&fmt=js&pid=110590&time=1776806727339&li_adsI...	0.0 ms	271 B
www.sfchronicle.com/_next/static/chunks/8111.22dd33ae762a232c.js	604800.0 s	2.6 KiB
www.sfchronicle.com/_next/static/chunks/2055.ddd390e544ad03a0.js	604800.0 s	2.6 KiB
match.adsrvr.org/track/cmb/generic?ttd_pid=d0tro1j&ttd_tpi=1	0.0 ms	255 B
match.adsrvr.org/track/cmb/generic?ttd_pid=liveintent&ttd_tpi=1&gdpr=0	0.0 ms	254 B
/track/cmb/generic?ttd_pid=dbegppc&ttd_tpi=1&ttd_puid=8cb...	0.0 ms	254 B
/track/cmb/generic?ttd_pid=agyie4r&ttd_tpi=1&gdpr=0&gdpr_...	0.0 ms	254 B
/i?e=pv&page=San%20Francisco%20Chronicle%20-%20Bay%20Area...	0.0 ms	245 B
/i?e=pe&tv=js-3.0.169&tna=Mather&aid=v1&p=web&tz=UTC&tzof...	0.0 ms	245 B
s.hdnux.com/photos/01/66/02/14/30941958/5/ratio3x2_160.webp	604800.0 s	2.3 KiB
www.sfchronicle.com/_next/static/chunks/2103.72f6f08163a2e047.js	604800.0 s	2.2 KiB
www.sfchronicle.com/_next/static/chunks/958.d8cac20853d28a06.js	604800.0 s	2.1 KiB
www.sfchronicle.com/_next/static/chunks/3782.a9ddc4524b34a29d.js	604800.0 s	2.0 KiB
www.sfchronicle.com/_next/static/chunks/404.cd55a37ee8695123.js	604800.0 s	1.9 KiB
www.sfchronicle.com/_next/static/chunks/2828.0d8cc0fbf3794134.js	604800.0 s	1.8 KiB
www.sfchronicle.com/_next/static/chunks/134.a577e5ca73e3ec97.js	604800.0 s	1.7 KiB
www.sfchronicle.com/_next/static/chunks/9887.9f535985abfd2cfb.js	604800.0 s	1.7 KiB
www.sfchronicle.com/_next/static/gH8SJ7ogUU_yZWVCgwTmf/_buildManifest.js	604800.0 s	1.7 KiB
www.sfchronicle.com/_next/static/chunks/3461.2ac7766d5b7cde5d.js	604800.0 s	1.7 KiB
www.sfchronicle.com/_next/static/chunks/6017.f863de7ed314ab0e.js	604800.0 s	1.7 KiB
www.sfchronicle.com/_next/static/chunks/7156.35e2aae6e8f58f61.js	604800.0 s	1.5 KiB
www.sfchronicle.com/_next/static/chunks/4871.2f37020ddf4d01f5.js	604800.0 s	1.4 KiB
www.sfchronicle.com/_next/static/chunks/6328.ca32eb5af282a373.js	604800.0 s	1.3 KiB
www.sfchronicle.com/_next/static/chunks/9809.9838f013fd7cdab9.js	604800.0 s	1.3 KiB
/pixel/?ad_log=referer&action=lead&pixid=2b918f54-21cb-4f...	0.0 ms	131 B
/pagead/js/r20260420/r20110914/client/window_focus_fy2021.js	1209600.0 s	1.3 KiB
www.sfchronicle.com/_next/static/chunks/9633.5b27f07f252d6975.js	604800.0 s	1.2 KiB
creativecdn.com/cm-notify?pi=ogury&gdpr=0&gdpr_consent=&tc=1	0.0 ms	124 B
www.sfchronicle.com/_next/static/chunks/pages/index-c42f63495c23e3b5.js	604800.0 s	1.2 KiB
www.sfchronicle.com/_next/static/chunks/4419.e1f81fcf986968d4.js	604800.0 s	1.2 KiB
www.sfchronicle.com/_next/static/chunks/7857.2c6c8362f0a79373.js	604800.0 s	1.2 KiB
www.sfchronicle.com/_next/static/chunks/846.d3e52c35e1cce38f.js	604800.0 s	1.2 KiB
www.sfchronicle.com/_next/static/chunks/9529.b0967bc9fe019472.js	604800.0 s	1.2 KiB
www.sfchronicle.com/_next/static/chunks/5091.a818cf97fbcba8d6.js	604800.0 s	1.2 KiB
www.sfchronicle.com/_next/static/chunks/288.7796d95d31765c46.js	604800.0 s	1.1 KiB
rtb-csync.smartadserver.com/redir?partneruserid=&partnerid=127&gdpr=0	0.0 ms	113 B
www.sfchronicle.com/_next/static/chunks/9701.b25bdaf57644ff19.js	604800.0 s	1.0 KiB
cdn.indexww.com/ht/htw-pixel.gif?0	86400.0 s	264 B
www.sfchronicle.com/_next/static/gH8SJ7ogUU_yZWVCgwTmf/_ssgManifest.js	604800.0 s	1.0 KiB
www.sfchronicle.com/_next/static/chunks/8275.d294dcca11ec46e9.js	604800.0 s	971 B
www.sfchronicle.com/_next/static/chunks/9323.3869205d7da9d143.js	604800.0 s	846 B
www.sfchronicle.com/_next/static/chunks/8917.e3db85fc168d1dcd.js	604800.0 s	807 B
/rp.gif?ts=1776806727323&id=a2_h2j62ahowdve&event=PageVis...	0.0 ms	76 B
www.sfchronicle.com/_next/static/chunks/389.574289dcc3f73966.js	604800.0 s	725 B
www.sfchronicle.com/_next/static/chunks/5870.54adb46cc3e5abb2.js	604800.0 s	662 B
www.sfchronicle.com/_next/static/chunks/9541.97b5cf62c68f13f3.js	604800.0 s	624 B
/AdServer/ImgSync?p=159706&gdpr=0&gdpr_consent=&us_privac...	0.0 ms	40 B
/imsync.ashx?pi=3660557764123951152&data=eyJwaCI6MzA3NTgs...	0.0 ms	29 B
/imsync.ashx?pi=3660557764123951152&data=eyJwaCI6MzA3NTgs...	0.0 ms	29 B
ml314.com/csync.ashx?fp=6198818250359004018&person_id=3660557764123951152&eid=2	86341.0 s	56 B
/tr/?id=822415974517712&ev=PageView&dl=https%3A%2F%2Fwww....	0.0 ms	19 B
/tr/?id=169188807166631&ev=PageView&dl=https%3A%2F%2Fwww....	0.0 ms	16 B
eus.rubiconproject.com/usync.js	58542.0 s	0 B
eus.rubiconproject.com/usync.js	58542.0 s	0 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

items: [map[reflowTime:35.836 source:map[type:text value:[unattributed]]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG

nodeLabel: A rendering of Kaiser Permanente’s proposed new hospital in San Francisco. If a…

path: 1,HTML,1,BODY,2,DIV,6,MAIN,3,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,DIV,0,PICTURE,8,IMG

selector: a > div.rel > picture > img.x100

snippet: <img alt="A rendering of Kaiser Permanente’s proposed new hospital in San Francisco.…" loading="eager" srcset="https://s.hdnux.com/photos/01/66/01/77/30941163/9/ratio3x2_80.jpg 80w, htt…" sizes="(min-width: 1048px) 640px, (min-width: 768px) 720px, 100vw" style="aspect-ratio:3 / 2" class="x100 y100 opc bgpc ofcv bgscv block bg-gray200 mnh0px fill">

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

value: No additional origins are good candidates for preconnecting

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/s/opensans/v44/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOS...	5.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
div.player-wrapper > div#jwExperienceDiv_1i80jec1vi63-0 > div.jw-wrapper > div.jw-preview `div.player-wrapper > div#jwExperienceDiv_1i80jec1vi63-0 > div.jw-wrapper > div.jw-preview`	assets-jpcust.jwpsrv.com/thumbnails/95okujz4-320.jpg	115.8 KiB	86.2 KiB
head > link `head > link`	/upload/138438_2662292411_943e71dce5fd2023029bff11bcf3764...	7.3 KiB	4.9 KiB
Top 100 Restaurants in the Bay Area `div.fdc > article.grid > div.f > h2.owa`	/upload/138456_911663227_867de6e15d5db404bd13131ab25f5d3d...	6.7 KiB	4.3 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.1 s

URL	Time Spent
sfchronicle.com/	1.1 s
www.sfchronicle.com/	0.0 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.2 s

URL	Time Spent
www.sfchronicle.com/	1.3 s

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 150 ms 61.7 KiB

URL	Transfer Size	Est Savings
	22.1 KiB	22.1 KiB
www.sfchronicle.com/_next/static/css/068ea46319039004.css	23.8 KiB	21.7 KiB
.jw-reset{text-align:left;direction:ltr} …	18.7 KiB	18.0 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
d15kdpgjg3unno.cloudfront.net/oPS.js?cid=31	13.7 s	13.6 s	24 ms
Unattributable	4.6 s	599 ms	0.0 ms
q777.sfchronicle.com/script.js	3.3 s	3.0 s	28 ms
www.sfchronicle.com/	2.8 s	1.2 s	30 ms
www.sfchronicle.com/_next/static/chunks/framework-f80cd7bf984bdace.js	2.1 s	1.9 s	32 ms
/scripts/a5e03e178aaf9b41b3fc69428362339bd7ba9a606118acee...	1.4 s	1.2 s	109 ms
/6af07a2d-d0d3-4dfd-961a-bab066126220-web.js	1.4 s	961 ms	156 ms
cdn.p-n.io/pushly-sdk.min.js?domain_key=jITCn0UVwwm97QJE7mua9eBW8V3sTrkabjYG	1.4 s	1.2 s	21 ms
ssl.p.jwpcdn.com/player/v/8.47.0/provider.hlsjs.js	1.4 s	1.1 s	67 ms
htlbid.com/build/9c2d0970-f245-4983-aa9a-d65d86326253/hnpbid.js	1.4 s	1.2 s	80 ms
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...	986 ms	871 ms	82 ms
sdk.mrf.io/statics/marfeel-sdk.js?id=9657	780 ms	750 ms	6.3 ms
cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js	665 ms	453 ms	206 ms
www.googletagmanager.com/gtag/js?id=G-56G0ZT3ZD0&cx=c&gtm=4e64k0h2	562 ms	498 ms	61 ms
c.amazon-adsystem.com/aax2/apstag.js	549 ms	488 ms	44 ms
/experimentsexperience/render?siteId=9657&url=https%3A%2F...	506 ms	365 ms	0.4 ms
cdn.jwplayer.com/v2/sites/l2mFHLnd/player.js	498 ms	442 ms	31 ms
www.googletagmanager.com/gtag/js?id=AW-936831553&cx=c&gtm=4e64k0h2	484 ms	425 ms	52 ms
s.ntv.io/serve/load.js	456 ms	336 ms	113 ms
www.googletagmanager.com/gtm.js?id=GTM-N799RG7S&gtm=4e64k0h2	448 ms	362 ms	71 ms
ssl.p.jwpcdn.com/player/services/vertical-video/v/0/index.js	425 ms	266 ms	41 ms
www.googletagmanager.com/gtm.js?id=GTM-M34WSG8	398 ms	335 ms	54 ms
www.googletagmanager.com/gtag/destination?id=DC-15089575&cx=c&gtm=4e64k0h2	396 ms	338 ms	44 ms
collector-52720.us.tvsquared.com/tv2track.js	380 ms	270 ms	2.8 ms
js-agent.newrelic.com/nr-spa-1.313.1.min.js	355 ms	307 ms	15 ms
/assets/0xB4C31EFABC209F3B75CFCFA49DCB4058E3E91866/GetJS?...	310 ms	226 ms	51 ms
/signals/config/822415974517712?v=2.9.303&r=stable&domain...	296 ms	242 ms	51 ms
/signals/config/169188807166631?v=2.9.303&r=stable&domain...	269 ms	222 ms	14 ms
www.googletagmanager.com/gtag/js?id=AW-&cx=c&gtm=4e64k0h2	211 ms	163 ms	47 ms
www.sfchronicle.com/_next/static/chunks/pages/index-c42f63495c23e3b5.js	198 ms	197 ms	0.3 ms
connect.facebook.net/en_US/fbevents.js	179 ms	132 ms	45 ms
/hearstnewspapers-9rqIDoYfbw/_hearst-floors/prebid-load.js	174 ms	139 ms	32 ms
js.matheranalytics.com/s/ma86077/712314000/all/ml.js?cb=1714	156 ms	134 ms	18 ms
securepubads.g.doubleclick.net/tag/js/gpt.js	149 ms	104 ms	44 ms
www.sfchronicle.com/_next/static/chunks/main-61f7121325b2456a.js	139 ms	122 ms	17 ms
b-code.liadm.com/b-028s.min.js	138 ms	109 ms	18 ms
www.sfchronicle.com/_next/static/chunks/pages/_app-d6aa58070bba276d.js	131 ms	82 ms	31 ms
hearst.blueconic.net/DG/DEFAULT/cs?&callback=bc_json158	119 ms	103 ms	0.3 ms
ep2.adtrafficquality.google/sodar/sodar2.js	103 ms	89 ms	2.9 ms
accounts.google.com/gsi/client	99 ms	60 ms	34 ms
cdn.jwplayer.com/v2/sites/l2mFHLnd/placements/P0hqU8dY/embed.js	98 ms	85 ms	12 ms
ssl.p.jwpcdn.com/player/v/8.47.0/jwpsrv.js	97 ms	73 ms	10 ms
q777.sfchronicle.com/plugin/library/c639374ef06961b30d02cf0d29623622	92 ms	2.8 ms	83 ms
ak.sail-horizon.com/spm/spm.v1.min.js	86 ms	68 ms	17 ms
ssl.p.jwpcdn.com/player/v/8.47.0/jwplayer.core.js	83 ms	38 ms	28 ms
tags.srv.stackadapt.com/events.js	81 ms	61 ms	2.9 ms
www.googletagmanager.com/gtag/js?	75 ms	42 ms	32 ms
q777.sfchronicle.com/plugin/plugin/db46d7aeff1612c61d56388bc25f43ed	75 ms	23 ms	50 ms
launchpad.privacymanager.io/latest/launchpad.bundle.js	68 ms	41 ms	25 ms
ml314.com/tag.aspx?213	60 ms	48 ms	4.8 ms
config.aps.amazon-adsystem.com/configs/3070	59 ms	56 ms	1.0 ms
static.ads-twitter.com/uwt.js	59 ms	51 ms	5.9 ms
snap.licdn.com/li.lms-analytics/insight.min.js	56 ms	48 ms	6.6 ms
www.redditstatic.com/ads/pixel.js	56 ms	40 ms	8.0 ms
/ats-modules/1dafeb14-78f6-44a1-988c-3f535d813f08/ats.js	54 ms	38 ms	15 ms
/6b971493-bc7d-4b6e-b933-34b4e401bc8d/launchpad-liveramp.js	54 ms	51 ms	1.0 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	35.7 s
Other	5.1 s
Script Parsing & Compilation	2.2 s
Garbage Collection	1.0 s
Style & Layout	778 ms
Parse HTML & CSS	607 ms
Rendering	337 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in the main frame.	Actionable
The page has an unload handler in a sub frame.	Actionable

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 12.9 KiB

URL	Transfer Size	Est Savings
.jw-reset{text-align:left;direction:ltr} …	18.7 KiB	12.9 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 80.4 KiB

URL	Transfer Size	Est Savings
q777.sfchronicle.com/plugin/library/c639374ef06961b30d02cf0d29623622	203.5 KiB	46.0 KiB
q777.sfchronicle.com/plugin/plugin/db46d7aeff1612c61d56388bc25f43ed	88.0 KiB	20.3 KiB
launchpad.privacymanager.io/latest/launchpad.bundle.js	45.0 KiB	14.2 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 1.8 MiB

URL	Transfer Size	Est Savings
s.ntv.io/serve/load.js	250.4 KiB	195.3 KiB
q777.sfchronicle.com/plugin/library/c639374ef06961b30d02cf0d29623622	203.5 KiB	169.8 KiB
cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js	257.0 KiB	149.7 KiB
/assets/0xB4C31EFABC209F3B75CFCFA49DCB4058E3E91866/GetJS?...	137.2 KiB	89.1 KiB
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...	187.7 KiB	85.5 KiB
www.googletagmanager.com/gtag/js?id=AW-&cx=c&gtm=4e64k0h2	133.9 KiB	78.4 KiB
accounts.google.com/gsi/client	95.4 KiB	67.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-N799RG7S&gtm=4e64k0h2	174.5 KiB	66.9 KiB
www.googletagmanager.com/gtag/js?id=G-56G0ZT3ZD0&cx=c&gtm=4e64k0h2	161.0 KiB	64.9 KiB
www.googletagmanager.com/gtag/destination?id=DC-15089575&cx=c&gtm=4e64k0h2	129.2 KiB	60.7 KiB
ssl.p.jwpcdn.com/player/v/8.47.0/provider.hlsjs.js	99.3 KiB	59.1 KiB
www.googletagmanager.com/gtm.js?id=GTM-M34WSG8	129.4 KiB	54.8 KiB
www.googletagmanager.com/gtag/js?	84.8 KiB	53.6 KiB
www.googletagmanager.com/gtag/js?id=AW-936831553&cx=c&gtm=4e64k0h2	147.2 KiB	52.8 KiB
q777.sfchronicle.com/plugin/plugin/db46d7aeff1612c61d56388bc25f43ed	88.0 KiB	47.3 KiB
ssl.p.jwpcdn.com/player/services/vertical-video/v/0/index.js	69.0 KiB	45.7 KiB
htlbid.com/build/9c2d0970-f245-4983-aa9a-d65d86326253/hnpbid.js	145.8 KiB	41.7 KiB
c.amazon-adsystem.com/aax2/apstag.js	90.6 KiB	40.5 KiB
/signals/config/822415974517712?v=2.9.303&r=stable&domain...	125.0 KiB	39.0 KiB
/hearstnewspapers-9rqIDoYfbw/_hearst-floors/prebid-load.js	70.3 KiB	36.3 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	36.0 KiB
ak.sail-horizon.com/spm/spm.v1.min.js	47.7 KiB	32.2 KiB
www.sfchronicle.com/_next/static/chunks/7787-e1f4fb6760aae2a2.js	59.7 KiB	25.7 KiB
sdk.mrf.io/statics/marfeel-sdk.js?id=9657	58.8 KiB	24.9 KiB
securepubads.g.doubleclick.net/tag/js/gpt.js	33.8 KiB	24.1 KiB
www.sfchronicle.com/_next/static/chunks/pages/_app-d6aa58070bba276d.js	60.5 KiB	23.2 KiB
cdn.jwplayer.com/v2/sites/l2mFHLnd/player.js	67.5 KiB	23.1 KiB
d15kdpgjg3unno.cloudfront.net/oPS.js?cid=31	59.8 KiB	22.9 KiB
/ats-modules/1dafeb14-78f6-44a1-988c-3f535d813f08/ats.js	38.6 KiB	22.5 KiB
plugins.blueconic.net/static/scripts/jquery/jquery-3.7.1-BC-v2.min.js	29.7 KiB	22.0 KiB
www.sfchronicle.com/_next/static/chunks/371.d0b67b8267614a27.js	22.2 KiB	20.7 KiB
js.matheranalytics.com/s/ma86077/712314000/all/ml.js?cb=1714	40.9 KiB	20.4 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/69e89443_e6b47e8ec6f32e99395aa30016c6359e207e3bbb/sites/...	456.7 KiB
cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js	257.5 KiB
s.ntv.io/serve/load.js	251.1 KiB
/6af07a2d-d0d3-4dfd-961a-bab066126220-web.js	226.3 KiB
q777.sfchronicle.com/plugin/library/c639374ef06961b30d02cf0d29623622	204.1 KiB
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...	187.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-N799RG7S&gtm=4e64k0h2	174.5 KiB
www.googletagmanager.com/gtag/js?id=G-56G0ZT3ZD0&cx=c&gtm=4e64k0h2	161.0 KiB
www.sfchronicle.com/	157.0 KiB
www.googletagmanager.com/gtag/js?id=AW-936831553&cx=c&gtm=4e64k0h2	147.3 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
brand-logo `div.mxa > div#modalOuter > div.top > img.lg:none`	/rest/v2/dialogues/files/d994dc0d-ddee-4718-be84-2276aee5...

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

●Layout shift culprits

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●User Timing marks and measures 55 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 1 animated element found

●Network Requests

●Network Round Trip Times 410 ms

●Server Backend Latencies 610 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

○INP breakdown

○Avoid large layout shifts

100

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.

○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

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

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

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

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

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<frame>` or `<iframe>` elements have a title

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

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

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

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

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○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

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○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.

○Identical links have the same purpose.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

Trust and Safety

Users are mistrustful of or confused by sites that request to send notifications without context. Consider tying the request to user gestures instead. Learn more about responsibly getting permission for notifications.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source
cdn.p-n.io/pushly-sdk.min.js?domain_key=jITCn0UVwwm97QJE7mua9eBW8V3sTrkabjYG

User Experience

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Displayed size	Actual size	Expected size
brand-logo `div.mxa > div#modalOuter > div.top > img.lg:none`	/rest/v2/dialogues/files/d994dc0d-ddee-4718-be84-2276aee5...	300 x 330	300 x 330	450 x 495

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Topics	htlbid.com/build/9c2d0970-f245-4983-aa9a-d65d86326253/hnpbid.js
SharedStorage	q777.sfchronicle.com/script.js line 821, col 205
Unload event listeners are deprecated and will be removed.	www.sfchronicle.com/ line 6, col 8711
AttributionReporting	snap.licdn.com/li.lms-analytics/insight.min.js

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
www.sfchronicle.com/ line 6, col 8711	`[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token.`
www.sfchronicle.com/ line 6, col 8711	`%c PerimeterXLoadError color: #f54f4f; font-weight:bold; [object Object]`
www.sfchronicle.com/	`Access to XMLHttpRequest at 'https://api.permutive.com/standard-audiences/v1/affinity?url=https%3A%2F%2Fwww.sfchronicle.com&k=8cbbdd6e-f6b9-4f84-9637-a93d3032cbf2' from origin 'https://www.sfchronicle.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.`
www.sfchronicle.com/	`Access to XMLHttpRequest at 'https://api.permutive.com/standard-audiences/v1/affinity?url=https%3A%2F%2Fwww.sfchronicle.com&k=8cbbdd6e-f6b9-4f84-9637-a93d3032cbf2' from origin 'https://www.sfchronicle.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.`
www.sfchronicle.com/ line 6, col 8711	Error fetching TransUnionID: SyntaxError: Failed to execute 'json' on 'Response': Unexpected end of JSON input at e.<computed> [as json] (https://www.sfchronicle.com/:7:46307) at loadInitialize (https://www.sfchronicle.com/_next/static/chunks/pages/_app-d6aa58070bba276d.js:1:158427) at async https://www.sfchronicle.com/_next/static/chunks/pages/_app-d6aa58070bba276d.js:1:89091 at async Promise.all (index 3) at async https://www.sfchronicle.com/_next/static/chunks/pages/_app-d6aa58070bba276d.js:1:89148
www.sfchronicle.com/413gkwMT/init.js	`Failed to load resource: the server responded with a status of 404 ()`
idsync.rlcdn.com/395886.gif?partner_uid=3660557764123951152	`Failed to load resource: the server responded with a status of 451 ()`
www.sfchronicle.com/	`Not signed in with the identity provider.`
www.sfchronicle.com/	`Refused to execute script from 'https://dpm.demdex.net/demconf.jpg?et:ibs%7cdata:dpid=903&dpuuid=6bda4873-d334-412e-8ff7-676dd28aab5f&gdpr=0&gdpr_consent=&redir=https%3A%2F%2Fmatch.adsrvr.org%2Ftrack%2Fcmf%2Fgeneric%3Fttd_pid%3Daam' because its MIME type ('image/gif') is not executable, and strict MIME type checking is enabled.`

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Displays images with correct aspect ratio

●Page has the HTML doctype

●Properly defines charset

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

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`