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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

38

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 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:0.434 source:map[column:314586 line:1 type:source-location url:https://fem.gprod.postmedia.digital/v141.0/fem.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:43.898 source:map[column:51408 line:0 type:source-location url:https://fem.gprod.postmedia.digital/v141.0/fem.js urlProvider:network]] map[reflowTime:0.642 source:map[column:54062 line:0 type:source-location url:https://fem.gprod.postmedia.digital/v141.0/fem.js urlProvider:network]] map[reflowTime:1.217 source:map[type:text value:[unattributed]]] map[reflowTime:0.434 source:map[column:289349 line:0 type:source-location url:https://fem.gprod.postmedia.digital/v141.0/fem.js urlProvider:network]] map[reflowTime:0.321 source:map[column:24129 line:2 type:source-location url:https://c.amazon-adsystem.com/aax2/apstag.js urlProvider:network]] map[reflowTime:2.874 source:map[column:181493 line:0 type:source-location url:https://cdn.taboola.com/libtrc/postmedia1-network/loader.js urlProvider:network]] map[reflowTime:3.171 source:map[column:149729 line:0 type:source-location url:https://cdn.taboola.com/libtrc/postmedia1-network/loader.js urlProvider:network]] map[reflowTime:23.178 source:map[column:463327 line:0 type:source-location url:https://cdn.taboola.com/libtrc/postmedia1-network/loader.js urlProvider:network]] map[reflowTime:7.154 source:map[column:466484 line:0 type:source-location url:https://cdn.taboola.com/libtrc/postmedia1-network/loader.js urlProvider:network]] map[reflowTime:4.251 source:map[column:877841 line:0 type:source-location url:https://cdn.taboola.com/libtrc/postmedia1-network/loader.js urlProvider:network]] map[reflowTime:0.426 source:map[column:878218 line:0 type:source-location url:https://cdn.taboola.com/libtrc/postmedia1-network/loader.js urlProvider:network]] map[reflowTime:21.316 source:map[column:878766 line:0 type:source-location url:https://cdn.taboola.com/libtrc/postmedia1-network/loader.js urlProvider:network]] map[reflowTime:0.397 source:map[column:960954 line:0 type:source-location url:https://cdn.taboola.com/libtrc/postmedia1-network/loader.js urlProvider:network]] map[reflowTime:4.693 source:map[column:961132 line:0 type:source-location url:https://cdn.taboola.com/libtrc/postmedia1-network/loader.js urlProvider:network]]]

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

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
cdn.viafoura.net/vf-v2.js300.0 s187.2 KiB
/23dc09d6-b664-425a-a76e-0eed6a6cc102-web.js900.0 s171.2 KiB
jssdkcdns.mparticle.com/js/v2/us1-99b65fde89a1a145894d2d51d283cc83/mparticle.js3600.0 s145.0 KiB
cdn.tinypass.com/api/tinypass.min.js?version=214400.0 s132.6 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
c.amazon-adsystem.com/aax2/apstag.js3600.0 s91.0 KiB
/dqzP001U6CvfmEQNxKTyCMgOlPA/gpt_and_prebid/config.js1100.0 s70.9 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
ak.sail-horizon.com/spm/spm.v1.min.js600.0 s48.1 KiB
/signals/config/1685973801652415?v=2.9.303&r=stable&domai...1200.0 s47.3 KiB
auth.lrcontent.com/v2/js/LoginRadiusV2.js14400.0 s56.6 KiB
s3.us-west-2.amazonaws.com/application-mia-player-prod.rubiconproject.com/pub.js0.0 ms38.5 KiB
auth.lrcontent.com/v2/LoginRadiusV2.js14400.0 s56.4 KiB
sdk.mrf.io/statics/marfeel-sdk.js?id=15281800.0 s41.6 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.id5-sync.com/api/1.0/id5-api.js3600.0 s34.5 KiB
sdk.mrf.io/statics/556e7c0a30ca71e80c0f.js3600.0 s24.4 KiB
secure.cdn.fastclick.net/js/pubcid/latest/pubcid.min.js900.0 s21.7 KiB
www.redditstatic.com/ads/pixel.js60.0 s19.0 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
c2.taboola.com/nr/postmedia-nationalpost/newsroom.js14400.0 s18.1 KiB
tags.qortex.ai/cxo/cx-bootstrapper-init14400.0 s12.8 KiB
pixel.byspotify.com/ping.min.js3600.0 s10.2 KiB
snap.licdn.com/li.lms-analytics/insight.min.js86400.0 s18.7 KiB
cdn.cxense.com/cx.cce.js3600.0 s6.8 KiB
tags.crwdcntrl.net/lt/c/16576/sync.min.js86400.0 s13.1 KiB
postmedia.solutions.cdn.optable.co/public-assets/postmedia-sdk.js86400.0 s10.9 KiB
static.trueanthem.com/scripts/ta.c34341.js86400.0 s10.7 KiB
/bootstrapper?group-id=a3PmJ0rD2E6wwBHJVRNsuw&video-conta...14400.0 s5.6 KiB
sb.scorecardresearch.com/internal-cs/default/beacon-and.js86400.0 s7.8 KiB
sb.scorecardresearch.com/beacon.js86400.0 s6.7 KiB
/0787f10e-ca64-4393-8cda-1b8744767af9/launchpad-liveramp.js0.0 ms2.6 KiB
www.npttech.com/advertising.js28800.0 s3.0 KiB
config.aps.amazon-adsystem.com/configs/35283600.0 s2.2 KiB
experience.tinypass.com/xbuilder/experience/load?aid=SE0WzqlbUG1800.0 s2.0 KiB
/1745285/trc/3/json?tim=1776804601319&data=%7B%22id%22%3A...0.0 ms1.7 KiB
multiformat.rubiconproject.com/passbacks/google.js0.0 ms1.2 KiB
pm-widget.taboola.com/postmedia1-network/load.js3600.0 s1.4 KiB
/collect?v=2&fmt=js&pid=8802970%2C1747836&time=1776804601...0.0 ms693 B
/rp.gif?ts=1776804601087&id=a2_gqmoyqqp1ygc&event=PageVis...0.0 ms666 B
static.trueanthem.com/scripts/ta.js86400.0 s1.3 KiB
/Repo/rep.gif?ver=3.3.0&typ=pgv&rnd=mo93l0nywer1rz9f&sid=...0.0 ms412 B
/newsroom/1.0/postmedia-nationalpost/get-action?page.url=...0.0 ms394 B
ad-delivery.net/px.gif?ch=286400.0 s611 B
/profiles_engine/ProfilesEngineServlet?at=20&mi=10&secure...0.0 ms218 B
/usersync?aid=1000011&gdpr=0&gdpr_consent=0&us_privacy=&u...0.0 ms206 B
/usersync?aid=1000013&gdpr=0&gdpr_consent=0&us_privacy=&u...0.0 ms205 B
/usersync?aid=1000015&gdpr=0&gdpr_consent=0&us_privacy=&u...0.0 ms205 B
/usersync?aid=1000018&gdpr=0&gdpr_consent=&uuid=499245204...0.0 ms205 B
/usersync?aid=1000026&gdpr=0&gdpr_consent=0&us_privacy=&u...0.0 ms205 B
/usersync?aid=1000032&gdpr=0&gdpr_consent=0&us_privacy=&u...0.0 ms205 B
/track/cmf/generic?ttd_pid=0kkyw3l&ttd_tpi=1&gdpr=0&gdpr_...0.0 ms149 B
/su?gdpr=0&gdpr_consent=0&tpid=22144&cburl=https%3A%2F%2F...0.0 ms125 B
sync.bfmio.com/syncb?pid=111&gdpr=0&gdpr_consent=0&us_privacy=0.0 ms118 B
/st?cijs=convusmp&ttype=0&cisd=convusmp&cipid=66361655&cr...0.0 ms111 B
sync.sxp.smartclip.net/sync?type=red&dsp=116&gdpr_consent=0&ang_testid=10.0 ms104 B
/AdServer/ImgSync?p=157310&gdpr=0&gdpr_consent=0&pu=https...0.0 ms69 B
ad-delivery.net/px.gif?ch=186400.0 s109 B
/st?cijs=convusmp&ttype=45&cisd=convusmp&cipid=66361655&c...0.0 ms43 B
/st?cijs=convusmp&ttype=45&cisd=convusmp&cipid=66361655&c...0.0 ms43 B
/st?cijs=convusmp&ttype=120&cisd=convusmp&cipid=66361655&...0.0 ms43 B
/st?cijs=convusmp&ttype=126&cisd=convusmp&cipid=66361655&...0.0 ms43 B
/tr/?id=1685973801652415&ev=PageView&dl=https%3A%2F%2Fnat...0.0 ms19 B

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
Image for Taboola Advertising Unit div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock
/taboola/image/fetch/f_jpg,q_auto,h_513,w_820,c_fill,g_fa...151.2 KiB85.5 KiB
Image for Taboola Advertising Unit div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock
/taboola/image/fetch/f_jpg,q_auto,h_456,w_820,c_fill,g_fa...103.0 KiB42.2 KiB
Image for Taboola Advertising Unit div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock
/taboola/image/fetch/f_jpg,q_auto,h_456,w_820,c_fill,g_fa...95.6 KiB34.8 KiB
Image for Taboola Advertising Unit div.videoCube > a.item-thumbnail-href > div.thumbBlock_holder > span.thumbBlock
/taboola/image/fetch/f_jpg,q_auto,h_456,w_820,c_fill,g_fa...78.5 KiB17.6 KiB
data servers div.article-card__content > a.article-card__image-link > picture.article-card__image > img
/nationalpost/wp-content/uploads/2025/10/2148113350_29589...18.5 KiB12.0 KiB
Migrant workers with their backs to the camera overlooking Okanagan Lake and Ke… div.article-card__content > a.article-card__image-link > picture.article-card__image > img
/nationalpost/wp-content/uploads/2025/12/four-farm-worker...13.9 KiB7.4 KiB
Mark Carney div.article-card__content > a.article-card__image-link > picture.article-card__image > img
/nationalpost/wp-content/uploads/2026/04/GettyImages-1243...13.3 KiB6.7 KiB
Canadian doctors div.article-card__content > a.article-card__image-link > picture.article-card__image > img.lazyload
/nationalpost/wp-content/uploads/2026/04/0503-bi-doctors-...12.9 KiB6.4 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

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.

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: 170 ms 2.1 MiB
URLTransfer SizeEst Savings
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.8 KiB242.9 KiB
edge-auth.microsoft.com/js/ms_auth_client.min.js279.9 KiB199.2 KiB
cdn.taboola.com/libtrc/postmedia1-network/loader.js327.2 KiB155.4 KiB
cdn.viafoura.net/vf-v2.js186.3 KiB119.2 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB119.1 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB98.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-MKM4ZNQ&l=dataLayer179.7 KiB87.4 KiB
cdn.confiant-integrations.net/gptprebidnative/202603241056/wrap.js141.5 KiB84.8 KiB
cdn.tinypass.com/api/tinypass.min.js?version=2132.1 KiB81.9 KiB
www.googletagmanager.com/gtag/js?id=G-CNZCQVF8JD&l=dl_mparticle&cx=c&gtm=4e64h1173.5 KiB70.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-NFGNKKG&l=gtm_data_layer&gtm=4e64h1161.5 KiB65.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-NTQ8ZV4&l=gtm_data_layer118.9 KiB62.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-P3Q4QHW&l=gtm_data_layer&gtm=4e64h1151.0 KiB58.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-5KMC8ND&l=dl_mparticle126.9 KiB55.1 KiB
vidstat.taboola.com/vpaid/vPlayer/player/v18.0.4/OvaMediaPlayer.js87.1 KiB54.3 KiB
auth.lrcontent.com/v2/js/LoginRadiusV2.js56.2 KiB50.1 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js109.0 KiB46.6 KiB
vidstat.taboola.com/vpaid/units/36_0_9/infra/cmTagINSTREAM.js93.5 KiB43.8 KiB
auth.lrcontent.com/v2/LoginRadiusV2.js56.2 KiB41.5 KiB
jssdkcdns.mparticle.com/js/v2/us1-99b65fde89a1a145894d2d51d283cc83/mparticle.js144.7 KiB40.6 KiB
c.amazon-adsystem.com/aax2/apstag.js90.6 KiB38.1 KiB
fem.gprod.postmedia.digital/v141.0/fem.js88.2 KiB37.3 KiB
pagead2.googlesyndication.com/pagead/js/adsbygoogle.js54.1 KiB34.9 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.7 KiB
micro.rubiconproject.com/prebid/dynamic/14648.js46.1 KiB31.5 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB29.6 KiB
cdn-gateflipp.flippback.com/tag/js/flipptag.js?site_id=%20117944356.5 KiB29.4 KiB
s3.us-west-2.amazonaws.com/application-mia-player-prod.rubiconproject.com/pub.js37.9 KiB26.1 KiB
sdk.mrf.io/statics/556e7c0a30ca71e80c0f.js23.9 KiB22.2 KiB
cdn.cxense.com/cx.js37.5 KiB21.8 KiB
/23dc09d6-b664-425a-a76e-0eed6a6cc102-web.js170.7 KiB21.6 KiB
launchpad.privacymanager.io/latest/launchpad.bundle.js40.2 KiB21.4 KiB
oceancloudhosts.com/assets/qgk059/xfnkxo.module.js37.3 KiB21.1 KiB
fem.gprod.postmedia.digital/v141.0/IIQUniversalID.js43.9 KiB20.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
/pagead/managed/js/gpt/m202604160201/pubads_impl.js2.9 s2.7 s110 ms
nationalpost.com/2.9 s375 ms22 ms
Unattributable2.6 s823 ms0.0 ms
cdn.taboola.com/libtrc/postmedia1-network/loader.js1.5 s838 ms119 ms
vidstat.taboola.com/lite-unit/5.7.0/UnitInstreamMobile.min.js810 ms660 ms9.1 ms
/23dc09d6-b664-425a-a76e-0eed6a6cc102-web.js620 ms512 ms64 ms
fem.gprod.postmedia.digital/v141.0/fem.js553 ms283 ms1.2 ms
www.googletagmanager.com/gtm.js?id=GTM-P3Q4QHW&l=gtm_data_layer&gtm=4e64h1548 ms462 ms53 ms
cdn.tinypass.com/api/tinypass.min.js?version=2510 ms328 ms38 ms
www.redditstatic.com/ads/pixel.js493 ms350 ms7.5 ms
cdn.confiant-integrations.net/gptprebidnative/202603241056/wrap.js446 ms370 ms28 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js412 ms308 ms96 ms
www.googletagmanager.com/gtm.js?id=GTM-NFGNKKG&l=gtm_data_layer&gtm=4e64h1385 ms248 ms48 ms
cdn.viafoura.net/vf-v2.js311 ms238 ms60 ms
www.googletagmanager.com/gtm.js?id=GTM-MKM4ZNQ&l=dataLayer307 ms249 ms54 ms
pm-widget.taboola.com/postmedia1-network/pmk-20220605.3.js304 ms293 ms7.9 ms
vidstat.taboola.com/vpaid/units/36_0_9/infra/cmTagINSTREAM.js301 ms243 ms45 ms
www.googletagmanager.com/gtag/js?id=G-CNZCQVF8JD&l=dl_mparticle&cx=c&gtm=4e64h1291 ms250 ms40 ms
c.amazon-adsystem.com/aax2/apstag.js244 ms183 ms32 ms
cdn.viafoura.net/chunks/142.604b6661d6c6835e3317.js234 ms159 ms2.9 ms
/pagead/managed/js/activeview/current/ufs_web_display.js230 ms203 ms20 ms
www.googletagmanager.com/gtm.js?id=GTM-5KMC8ND&l=dl_mparticle225 ms179 ms45 ms
pagead2.googlesyndication.com/pagead/js/adsbygoogle.js220 ms197 ms13 ms
www.googletagmanager.com/gtm.js?id=GTM-NTQ8ZV4&l=gtm_data_layer217 ms178 ms35 ms
vidstat.taboola.com/lite-unit/5.7.0/UnitFeedManagerMobile.min.js210 ms142 ms8.7 ms
securepubads.g.doubleclick.net/tag/js/gpt.js193 ms162 ms18 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js184 ms100 ms84 ms
sdk.mrf.io/statics/marfeel-sdk.js?id=1528181 ms172 ms0.6 ms
/signals/config/1685973801652415?v=2.9.303&r=stable&domai...169 ms153 ms16 ms
cdn.parsely.com/keys/nationalpost.com/p.js165 ms153 ms5.7 ms
cdn.cxense.com/cx.js156 ms106 ms9.8 ms
cdn.taboola.com/libtrc/unip/1745285/tfa.js146 ms129 ms6.3 ms
cdn-gateflipp.flippback.com/tag/js/flipptag.js?site_id=%201179443134 ms105 ms18 ms
connect.facebook.net/en_US/fbevents.js131 ms101 ms29 ms
s3.us-west-2.amazonaws.com/application-mia-player-prod.rubiconproject.com/pub.js129 ms97 ms5.0 ms
html-load.com/core.js129 ms104 ms14 ms
jssdkcdns.mparticle.com/js/v2/us1-99b65fde89a1a145894d2d51d283cc83/mparticle.js121 ms78 ms42 ms
vidstat.taboola.com/vpaid/vPlayer/player/v18.0.4/OvaMediaPlayer.js115 ms70 ms40 ms
launchpad.privacymanager.io/latest/launchpad.bundle.js106 ms44 ms61 ms
ak.sail-horizon.com/spm/spm.v1.min.js103 ms89 ms13 ms
static.ads-twitter.com/uwt.js96 ms78 ms14 ms
dcs-static.gprod.postmedia.digital/21.0.2/websites/js/main.min.js95 ms66 ms8.9 ms
auth.lrcontent.com/v2/js/LoginRadiusV2.js91 ms51 ms20 ms
snap.licdn.com/li.lms-analytics/insight.min.js82 ms58 ms20 ms
ep2.adtrafficquality.google/sodar/sodar2.js81 ms70 ms7.2 ms
c2.taboola.com/nr/postmedia-nationalpost/newsroom.js80 ms73 ms6.1 ms
oceancloudhosts.com/assets/qgk059/xfnkxo.module.js78 ms63 ms11 ms
pixel.byspotify.com/ping.min.js72 ms27 ms2.9 ms
www.google-analytics.com/analytics.js61 ms50 ms5.0 ms
cdn.viafoura.net/chunks/117.9cd30f9517e471debfd7.js60 ms56 ms0.7 ms
vidstat.taboola.com/vpaid/units/36_0_9/infra/cmAdService.js57 ms53 ms3.8 ms
micro.rubiconproject.com/prebid/dynamic/14648.js56 ms44 ms11 ms
postmedia.solutions.cdn.optable.co/public-assets/postmedia-sdk.js54 ms51 ms2.2 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.

CategoryTime Spent
Script Evaluation13.9 s
Other3.2 s
Style & Layout2.1 s
Script Parsing & Compilation1.6 s
Rendering571 ms
Garbage Collection394 ms
Parse HTML & CSS195 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
Pages with WebSocket cannot enter back/forward cache.Pending browser support

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.

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.

Posted div.newsletter-new-story-page-template > div.newsletter-widget__header__new-story-page > div.newsletter-widget__banner__new-story-page > img

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
LCP request discovery
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 31 user timings
Avoid long main-thread tasks 20 long tasks found
Network Requests
Network Round Trip Times 250 ms
Server Backend Latencies 310 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 110 ms
Avoid large layout shifts 3 layout shifts found
INP breakdown
Avoid non-composited animations
92

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Contrast

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
National Post in Taboola advertising section div.videoCube > a.item-label-href > span.video-label-box > span.branding
National Post in Taboola advertising section div.videoCube > a.item-label-href > span.video-label-box > span.branding
span.branding > div.logoDiv > a.trc_mobile_disclosure_link > span span.branding > div.logoDiv > a.trc_mobile_disclosure_link > span
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link

These are opportunities to improve the legibility of your content.

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
97% of Canadian doctors report having to counter harm caused by false online in… div.article-card__content > div.article-card__details > a.article-card__link > h3.article-card__headline

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
BUSINESS ESSENTIALS section.carousel-widget > div.widget-title > div#BusinessEssentials4894490616705506819794126277443584 > a.widget-title__link
Sponsored: learn about this recommendation (opens dialog) span.video-label-box > span.branding > div.logoDiv > a.trc_mobile_disclosure_link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link
div.row > div.col-xs-12 > nav.footer__nav > a.footer__link div.row > div.col-xs-12 > nav.footer__nav > a.footer__link

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
`[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
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 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
Skip links are focusable.
Document has a main landmark.
Deprecated ARIA roles were not used
ARIA IDs are unique
Identical links have the same purpose.
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
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
Links are distinguishable without relying on color.
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
`<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.
77

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
AttributionReporting

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
Access to fetch at 'https://pagead2.googlesyndication.com/gampad/ads?pvsid=5561574395954041&correlator=257708985078946&output=ldjh&gdfp_req=1&vrg=202604160201&ptt=17&impl=fif&iu_parts=unused&enc_prev_ius=0&prev_iu_szs=321x241&ifi=1&dids=gpt-passback&adfs=1731517614&sfv=1-0-45&eri=69&sc=1&cdm=nationalpost.com&abxe=1&dt=1776804604253&adxs=-12245933&adys=-12245933&biw=412&bih=823&scr_x=0&scr_y=0&btvi=-1&ucis=opc0qrbgsosn&oid=2&u_his=2&u_h=823&u_w=412&u_ah=823&u_aw=412&u_cd=24&u_sd=1.75&dmc=8&bc=31&nvt=1&uach=WyJBbmRyb2lkIiwiMTEuMCIsIiIsIm1vdG8gZyBwb3dlciAoMjAyMikiLCIxNDcuMC4wLjAiLG51bGwsMSxudWxsLCI2NCIsW1siQ2hyb21pdW0iLCIxNDcuMC43NzI3LjEwMSJdLFsiTm90LkEvQnJhbmQiLCI4LjAuMC4wIl1dLDBd&nhd=2&url=https%3A%2F%2Fnationalpost.com%2F&loc=about%3Ablank&top=nationalpost.com&vis=1&psz=0x0&msz=0x0&fws=260&ohw=0&dlt=1776804603024&idt=142&prev_scp=ck%3Dindex%26imp%3Dindex%26intent_iq_group%3DU%26loc%3Dslice%26negative%3Dn%26no_pol%3Dtrue%26page%3Dindex%26permutive%3Drts%26pr%3Dnp%26prmtvctx%3Ddoqr%2Cbznf%2Crts%26prmtvsdk%3Dweb%26prmtvvid%3D0fc1f125-de56-4b6f-9a43-130adc8a7100%26prmtvwid%3D23dc09d6-b664-425a-a76e-0eed6a6cc102%26ptime%3D1776804598805%26puid%3D5f389c2f-bb32-4b1c-a666-389c0dded1e3%26sensitive%3Dn%26site%3D3&adks=2295625426&frm=23&blev=1&bisch=1' from origin 'https://nationalpost.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Access to fetch at 'https://pagead2.googlesyndication.com/gampad/ads?pvsid=5561574395954041&correlator=3365303607659149&output=ldjh&gdfp_req=1&vrg=202604160201&ptt=17&impl=fif&iu_parts=unused&enc_prev_ius=0&prev_iu_szs=321x241&ifi=1&dids=gpt-passback&adfs=1731517614&sfv=1-0-45&eri=69&sc=1&cdm=nationalpost.com&abxe=1&dt=1776804605293&adxs=-12245933&adys=-12245933&biw=412&bih=823&scr_x=0&scr_y=0&btvi=-1&ucis=opc0qrbgsosn&oid=2&u_his=2&u_h=823&u_w=412&u_ah=823&u_aw=412&u_cd=24&u_sd=1.75&dmc=8&bc=31&nvt=1&uach=WyJBbmRyb2lkIiwiMTEuMCIsIiIsIm1vdG8gZyBwb3dlciAoMjAyMikiLCIxNDcuMC4wLjAiLG51bGwsMSxudWxsLCI2NCIsW1siQ2hyb21pdW0iLCIxNDcuMC43NzI3LjEwMSJdLFsiTm90LkEvQnJhbmQiLCI4LjAuMC4wIl1dLDBd&nhd=2&url=https%3A%2F%2Fnationalpost.com%2F&loc=about%3Ablank&top=nationalpost.com&vis=1&psz=0x0&msz=0x0&fws=260&ohw=0&dlt=1776804603024&idt=142&prev_scp=ck%3Dindex%26imp%3Dindex%26intent_iq_group%3DU%26loc%3Dslice%26negative%3Dn%26no_pol%3Dtrue%26page%3Dindex%26permutive%3Drts%26pr%3Dnp%26prmtvctx%3Ddoqr%2Cbznf%2Crts%26prmtvsdk%3Dweb%26prmtvvid%3D0fc1f125-de56-4b6f-9a43-130adc8a7100%26prmtvwid%3D23dc09d6-b664-425a-a76e-0eed6a6cc102%26ptime%3D1776804598805%26puid%3D5f389c2f-bb32-4b1c-a666-389c0dded1e3%26sensitive%3Dn%26site%3D3&adks=2295625426&frm=23&blev=1&bisch=1' from origin 'https://nationalpost.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Access to fetch at 'https://pagead2.googlesyndication.com/gampad/ads?pvsid=5561574395954041&correlator=629650910723120&output=ldjh&gdfp_req=1&vrg=202604160201&ptt=17&impl=fif&iu_parts=unused&enc_prev_ius=0&prev_iu_szs=321x241&ifi=1&dids=gpt-passback&adfs=1731517614&sfv=1-0-45&eri=4&sc=1&cdm=nationalpost.com&abxe=1&dt=1776804603201&adxs=-12245933&adys=-12245933&biw=412&bih=823&scr_x=0&scr_y=0&btvi=-1&ucis=opc0qrbgsosn&oid=2&u_his=2&u_h=823&u_w=412&u_ah=823&u_aw=412&u_cd=24&u_sd=1.75&dmc=8&bc=31&nvt=1&uach=WyJBbmRyb2lkIiwiMTEuMCIsIiIsIm1vdG8gZyBwb3dlciAoMjAyMikiLCIxNDcuMC4wLjAiLG51bGwsMSxudWxsLCI2NCIsW1siQ2hyb21pdW0iLCIxNDcuMC43NzI3LjEwMSJdLFsiTm90LkEvQnJhbmQiLCI4LjAuMC4wIl1dLDBd&nhd=2&url=https%3A%2F%2Fnationalpost.com%2F&loc=about%3Ablank&top=nationalpost.com&vis=1&psz=0x0&msz=0x0&fws=260&ohw=0&dlt=1776804603024&idt=142&prev_scp=ck%3Dindex%26imp%3Dindex%26intent_iq_group%3DU%26loc%3Dslice%26negative%3Dn%26no_pol%3Dtrue%26page%3Dindex%26permutive%3Drts%26pr%3Dnp%26prmtvctx%3Ddoqr%2Cbznf%2Crts%26prmtvsdk%3Dweb%26prmtvvid%3D0fc1f125-de56-4b6f-9a43-130adc8a7100%26prmtvwid%3D23dc09d6-b664-425a-a76e-0eed6a6cc102%26ptime%3D1776804598805%26puid%3D5f389c2f-bb32-4b1c-a666-389c0dded1e3%26sensitive%3Dn%26site%3D3&adks=2295625426&frm=23' from origin 'https://nationalpost.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Access to XMLHttpRequest at 'https://ib.adnxs.com/getuidj?gdpr=0' from origin 'https://nationalpost.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Failed to load resource: net::ERR_FAILED
Failed to load resource: net::ERR_FAILED
Failed to load resource: net::ERR_FAILED
Failed to load resource: net::ERR_FAILED
Failed to load resource: the server responded with a status of 451 ()
nationalpost.com/ line 213, col 8746
TypeError: Cannot read properties of null (reading 'data') at HTMLDocument.<anonymous> (https://nationalpost.com/:214:8747) at https://fem.gprod.postmedia.digital/v141.0/fem.js:1:81533 at Generator.next (<anonymous>) at U (https://fem.gprod.postmedia.digital/v141.0/fem.js:1:69821) at a (https://fem.gprod.postmedia.digital/v141.0/fem.js:1:70024) at https://fem.gprod.postmedia.digital/v141.0/fem.js:1:70083 at new Promise (<anonymous>) at https://fem.gprod.postmedia.digital/v141.0/fem.js:1:69964 at B.initializeLoginState (https://fem.gprod.postmedia.digital/v141.0/fem.js:1:81589) at https://fem.gprod.postmedia.digital/v141.0/fem.js:1:76112
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
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Page has valid source maps
Redirects HTTP traffic to HTTPS
Ensure proper origin isolation with COOP
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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