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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.

23

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
connect.facebook.net/en_US/fbevents.js1200.0 s95.0 KiB
/sites/g/files/bhrskd331/files/styles/max_width_xs_2x_115...1209600.0 s791.4 KiB
www.uottawa.ca/themes/custom/uottawa/dist/assets/o-pattern.png1209600.0 s730.4 KiB
/sites/g/files/bhrskd331/files/2026-03/PREMIER CYCLE 2025...1209600.0 s574.7 KiB
/sites/g/files/bhrskd331/files/2026-03/20230817-BF-WOODSH...1209600.0 s536.3 KiB
/sites/g/files/bhrskd331/files/2026-03/2 CYCLE 20250606-B...1209600.0 s446.2 KiB
/signals/config/910695299141180?v=2.9.291&r=stable&domain...1200.0 s38.8 KiB
www.redditstatic.com/ads/pixel.js60.0 s19.0 KiB
www.uottawa.ca/themes/custom/uottawa/dist/assets/rotunde-mask.png1209600.0 s186.1 KiB
/signals/config/3333712706895607?v=2.9.291&r=stable&domai...1200.0 s15.3 KiB
/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd...1209600.0 s133.6 KiB
siteimproveanalytics.com/js/siteanalyze_3553.js86400.0 s27.5 KiB
pixel.byspotify.com/ping.min.js3600.0 s10.3 KiB
tags.srv.stackadapt.com/events.js5.0 s7.6 KiB
snap.licdn.com/li.lms-analytics/insight.min.js86400.0 s18.7 KiB
/sites/g/files/bhrskd331/files/css/css__jewS6I0VA0ElqWxcz...1209600.0 s44.8 KiB
/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2...1209600.0 s38.0 KiB
/sites/g/files/bhrskd331/files/js/js_17DkJEeQQi8P3KAkWwSY...1209600.0 s28.5 KiB
conversiontracking.campaigner.com/js.min.js86400.0 s6.8 KiB
/themes/custom/uottawa/dist/assets/uottawa-logo-horizonta...1209600.0 s18.0 KiB
/sites/g/files/bhrskd331/files/js/js_wqM6erges4n80SQMYZ60...1209600.0 s8.5 KiB
/collect?v=2&fmt=js&pid=7826537%2C1819972&time=1775594413...0.0 ms693 B
/rp.gif?ts=1775594413251&id=a2_g3uyi3lkxgtn&event=PageVis...0.0 ms637 B
/collect?v=2&fmt=js&pid=7826537%2C1819972&time=1775594413...0.0 ms567 B
/config/ca/f275c7c5-880d-4c4d-9a7f-c798f87328b3.js?v=3.54...0.0 ms463 B
/sites/g/files/bhrskd331/files/css/css_57Md6O9nb0uXLUT6l7...1209600.0 s3.8 KiB
www.uottawa.ca/libraries/lazysizes/lazysizes.min.js1209600.0 s3.7 KiB
ue.uottawa.ca/darksite_banner_en.js?ts=17755938280.0 ms287 B
/sites/g/files/bhrskd331/files/css/css_QkP-LjvAQE7VhEwlrT...1209600.0 s2.6 KiB
www.uottawa.ca/themes/custom/uottawa/dist/assets/logo--white.svg1209600.0 s1.7 KiB
www.uottawa.ca/themes/custom/uottawa/dist/assets/logo.svg1209600.0 s1.6 KiB
/themes/custom/uottawa/src/js/lib/fixtabindex0accessibili...1209600.0 s1023 B
www.uottawa.ca/themes/custom/uottawa/src/js/lib/tiktok-pixel.js?tci2ce1209600.0 s971 B
www.uottawa.ca/modules/contrib/google_tag/js/gtag.js?tci2ce1209600.0 s959 B
www.uottawa.ca/modules/contrib/google_tag/js/gtm.js?tci2ce1209600.0 s883 B
/sites/g/files/bhrskd331/files/js/js_t_6Pyhol8bGBYP4xBzMb...1209600.0 s810 B
www.uottawa.ca/themes/custom/uottawa/src/js/lib/facebook-pixel.js?tci2ce1209600.0 s783 B
www.uottawa.ca/themes/custom/uottawa/src/js/lib/snapchat.js?tci2ce1209600.0 s709 B
www.uottawa.ca/themes/custom/uottawa/src/js/lib/siteimprove.js?tci2ce1209600.0 s562 B
/tr/?id=910695299141180&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms19 B
/tr/?id=3333712706895607&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms16 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.361057] map[node:map[boundingRect:map[bottom:1031 height:228 left:0 right:412 top:803 width:412] lhId:page-7-SECTION nodeLabel:In the heart of Canada’s capital, the University of Ottawa offers, in English a… path:1,HTML,1,BODY,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,MAIN,0,SECTION,0,DIV,1,DIV,0,ARTICLE,0,DIV,1,DIV,0,DIV,0,DIV,0,SECTION selector:div.field > div.field__item > div.field__item__content > section#p-50ca0d74-b527-448e-bd1e-f76867d053b1 snippet:<section id="p-50ca0d74-b527-448e-bd1e-f76867d053b1" class="container"> type:node] score:0.222114] map[node:map[boundingRect:map[bottom:823 height:443 left:0 right:412 top:380 width:412] lhId:page-6-DIV nodeLabel:Cookies and Language Preferences Our website uses cookies to enhance your expe… path:1,HTML,1,BODY,13,DIV selector:body.path-frontpage > div#sliding-popup snippet:<div id="sliding-popup" role="alertdialog" aria-describedby="popup-text" aria-label="Cookie compliance banner" class="sliding-popup-bottom" style="bottom: 0px;"> type:node] score:0.024272] map[node:map[boundingRect:map[bottom:823 height:443 left:0 right:412 top:380 width:412] lhId:page-6-DIV nodeLabel:Cookies and Language Preferences Our website uses cookies to enhance your expe… path:1,HTML,1,BODY,13,DIV selector:body.path-frontpage > div#sliding-popup snippet:<div id="sliding-popup" role="alertdialog" aria-describedby="popup-text" aria-label="Cookie compliance banner" class="sliding-popup-bottom" style="bottom: 0px;"> type:node] score:0.020587] map[node:map[boundingRect:map[bottom:823 height:443 left:0 right:412 top:380 width:412] lhId:page-6-DIV nodeLabel:Cookies and Language Preferences Our website uses cookies to enhance your expe… path:1,HTML,1,BODY,13,DIV selector:body.path-frontpage > div#sliding-popup snippet:<div id="sliding-popup" role="alertdialog" aria-describedby="popup-text" aria-label="Cookie compliance banner" class="sliding-popup-bottom" style="bottom: 0px;"> type:node] score:0.008882] map[node:map[boundingRect:map[bottom:823 height:443 left:0 right:412 top:380 width:412] lhId:page-6-DIV nodeLabel:Cookies and Language Preferences Our website uses cookies to enhance your expe… path:1,HTML,1,BODY,13,DIV selector:body.path-frontpage > div#sliding-popup snippet:<div id="sliding-popup" role="alertdialog" aria-describedby="popup-text" aria-label="Cookie compliance banner" class="sliding-popup-bottom" style="bottom: 0px;"> type:node] score:0.004429]]

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:64.52 source:map[column:156 line:13 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2VV__7Q3-Ju6FJTvoqAXpWZU.js?scope=header&delta=0&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb 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:85.525 source:map[type:text value:[unattributed]]] map[reflowTime:2.41 source:map[column:49615 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2VV__7Q3-Ju6FJTvoqAXpWZU.js?scope=header&delta=0&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:0.562 source:map[column:50335 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2VV__7Q3-Ju6FJTvoqAXpWZU.js?scope=header&delta=0&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:0.336 source:map[column:50393 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2VV__7Q3-Ju6FJTvoqAXpWZU.js?scope=header&delta=0&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:0.311 source:map[column:50457 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2VV__7Q3-Ju6FJTvoqAXpWZU.js?scope=header&delta=0&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:0.174 source:map[column:54434 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2VV__7Q3-Ju6FJTvoqAXpWZU.js?scope=header&delta=0&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:0.641 source:map[column:49637 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2VV__7Q3-Ju6FJTvoqAXpWZU.js?scope=header&delta=0&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:0.519 source:map[column:51395 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2VV__7Q3-Ju6FJTvoqAXpWZU.js?scope=header&delta=0&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:0.426 source:map[column:488621 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd4AvYW3d-YV_AaD9LZR5k6yY.js?scope=footer&delta=2&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:43.661 source:map[column:223758 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd4AvYW3d-YV_AaD9LZR5k6yY.js?scope=footer&delta=2&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:8.676 source:map[column:226557 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd4AvYW3d-YV_AaD9LZR5k6yY.js?scope=footer&delta=2&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:6.593 source:map[column:226637 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd4AvYW3d-YV_AaD9LZR5k6yY.js?scope=footer&delta=2&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb urlProvider:network]] map[reflowTime:0.211 source:map[column:396483 line:2 type:source-location url:https://www.uottawa.ca/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd4AvYW3d-YV_AaD9LZR5k6yY.js?scope=footer&delta=2&language=en&theme=uottawa&include=eJx1kGtuwzAMgy_kzLuRIbuKy0V-wFbbpKevlwFpO2x_KOiTIBLyQvfNepQP-qLV8MWFUhbwKKkKKAd2UZP9b2BiKVHYKUUbh_zuf86-wWQwN0rsGnfcuVlkqNlzfIsR-EZtc52phbN9b4d9nhHdXFoyl6JKN7KBUiXEzO1AMwX2I_BUsbI8MdbdfBwLgXuHh0C317mSRz7x-vn3RpTiSaaumyDHA3coI9VWrvxkgrBMQ08vwXqmGs6kB1AseuS8gm_d7rp_7gFk_6Nb 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
Students sitting in the stairs in front on Simard building section#p-ee46f1ee-d136-4810-89d5-164f0f64cef2 > div.full-screen-hero__image > picture.image-container > img.lazyloaded
/sites/g/files/bhrskd331/files/styles/max_width_xs_2x_115...791.1 KiB754.7 KiB
Students looking at papers and smiling div.uo-grid > div.static-content-block-three-up__item > figure.static-content-block-three-up__item-image > img
/sites/g/files/bhrskd331/files/2026-03/PREMIER CYCLE 2025...574.3 KiB496.7 KiB
University of Ottawa Open minds. Brighter futures. At uOttawa, we firmly belie… section#p-ee46f1ee-d136-4810-89d5-164f0f64cef2 > div.container > div.full-screen-hero__container > div.full-screen-hero__content
www.uottawa.ca/themes/custom/uottawa/dist/assets/o-pattern.png729.9 KiB480.0 KiB
Student working on a wood piece div.uo-grid > div.static-content-block-three-up__item > figure.static-content-block-three-up__item-image > img
/sites/g/files/bhrskd331/files/2026-03/20230817-BF-WOODSH...535.8 KiB458.3 KiB
Students in class div.uo-grid > div.static-content-block-three-up__item > figure.static-content-block-three-up__item-image > img
/sites/g/files/bhrskd331/files/2026-03/2 CYCLE 20250606-B...445.8 KiB368.2 KiB
CONTACT 613-562-5700 General contact Find an expert Hire a co-op student Em… div#uo-page > div.global-footer--default > nav#block-bq-footer-menu > footer#uo-footer
www.uottawa.ca/themes/custom/uottawa/dist/assets/rotunde-mask.png185.8 KiB24.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG
nodeLabel: Students sitting in the stairs in front on Simard building
path: 1,HTML,1,BODY,1,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,MAIN,0,SECTION,0,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,DIV,0,PICTURE,5,IMG
selector: section#p-ee46f1ee-d136-4810-89d5-164f0f64cef2 > div.full-screen-hero__image > picture.image-container > img.lazyloaded
snippet: <img loading="lazy" src="https://www.uottawa.ca/sites/g/files/bhrskd331/files/styles/max_width_xs_2…" alt="Students sitting in the stairs in front on Simard building" class=" lazyloaded" data-src="/sites/g/files/bhrskd331/files/styles/max_width_l_1470px/public/2026-03/Ne…" typeof="foaf:Image">

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
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
ue.uottawa.ca/darksite_banner_en.js?ts=1775593828287 B1.1 s
fonts.googleapis.com/icon?family=Material+Icons&display=swap429 B175 ms
/css2?family=Spectral:wght@300;400&family=Work+Sans:wght@...1.2 KiB843 ms
/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2...38.0 KiB464 ms
www.uottawa.ca/themes/custom/uottawa/src/js/lib/tiktok-pixel.js?tci2ce971 B
cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.9.0/slick-theme.min.css1.3 KiB814 ms
/sites/g/files/bhrskd331/files/css/css__jewS6I0VA0ElqWxcz...44.8 KiB929 ms
/sites/g/files/bhrskd331/files/css/css_QkP-LjvAQE7VhEwlrT...2.6 KiB
www.uottawa.ca/themes/custom/uottawa/src/js/lib/facebook-pixel.js?tci2ce783 B
/themes/custom/uottawa/src/js/lib/fixtabindex0accessibili...1023 B
www.uottawa.ca/modules/contrib/google_tag/js/gtag.js?tci2ce959 B
/sites/g/files/bhrskd331/files/js/js_t_6Pyhol8bGBYP4xBzMb...810 B
www.uottawa.ca/themes/custom/uottawa/src/js/lib/snapchat.js?tci2ce709 B
www.uottawa.ca/modules/contrib/google_tag/js/gtm.js?tci2ce883 B
/sites/g/files/bhrskd331/files/css/css_57Md6O9nb0uXLUT6l7...3.8 KiB

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 787 ms
URLTime Spent
www.uottawa.ca/787 ms
www.uottawa.ca/en0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
In the heart of Canada’s capital, the University of Ottawa offers, in English a… div.field > div.field__item > div.field__item__content > section#p-50ca0d74-b527-448e-bd1e-f76867d053b1
0.222
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.024
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.021
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.009
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004
Cookies and Language Preferences Our website uses cookies to enhance your expe… body.path-frontpage > div#sliding-popup
0.004

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.

Estimated savings: 450 ms 40.2 KiB
URLTransfer SizeEst Savings
/sites/g/files/bhrskd331/files/css/css__jewS6I0VA0ElqWxcz...44.5 KiB40.2 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: 2.4 s 620.8 KiB
URLTransfer SizeEst Savings
connect.facebook.net/en_US/fbevents.js94.8 KiB89.2 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js109.0 KiB84.5 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js109.0 KiB84.2 KiB
/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd...133.3 KiB69.1 KiB
www.googletagmanager.com/gtag/js?id=G-GKVJ53FL3H&cx=c&gtm=4e6460177.9 KiB64.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-WVKZFC164.6 KiB61.8 KiB
www.googletagmanager.com/gtag/js?id=AW-873072808&cx=c&gtm=4e6460145.8 KiB60.6 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js109.0 KiB54.2 KiB
connect.facebook.net/en_US/fbevents.js94.8 KiB31.9 KiB
/sites/g/files/bhrskd331/files/js/js_17DkJEeQQi8P3KAkWwSY...28.2 KiB20.7 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
/sites/g/files/bhrskd331/files/js/js_RwRTj6aqZvVFwsXo8YH2...772 ms463 ms13 ms
Unattributable708 ms129 ms0.0 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js704 ms384 ms254 ms
www.uottawa.ca/en637 ms8.4 ms0.6 ms
www.googletagmanager.com/gtm.js?id=GTM-WVKZFC543 ms442 ms84 ms
/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd...411 ms163 ms69 ms
www.googletagmanager.com/gtag/js?id=G-GKVJ53FL3H&cx=c&gtm=4e6460402 ms320 ms54 ms
www.redditstatic.com/ads/pixel.js402 ms367 ms7.6 ms
connect.facebook.net/en_US/fbevents.js325 ms154 ms170 ms
www.googletagmanager.com/gtag/js?id=AW-873072808&cx=c&gtm=4e6460250 ms211 ms37 ms
sc-static.net/scevent.min.js136 ms117 ms9.6 ms
/signals/config/910695299141180?v=2.9.291&r=stable&domain...110 ms90 ms18 ms
siteimproveanalytics.com/js/siteanalyze_3553.js79 ms62 ms15 ms
snap.licdn.com/li.lms-analytics/insight.min.js72 ms46 ms18 ms
analytics.tiktok.com/i18n/pixel/static/identify_5cff1caf.js52 ms33 ms19 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 Evaluation3.2 s
Other890 ms
Script Parsing & Compilation814 ms
Style & Layout749 ms
Rendering167 ms
Parse HTML & CSS106 ms
Garbage Collection26 ms

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.

URLTransfer Size
/sites/g/files/bhrskd331/files/styles/max_width_xs_2x_115...791.4 KiB
www.uottawa.ca/themes/custom/uottawa/dist/assets/o-pattern.png730.4 KiB
/sites/g/files/bhrskd331/files/2026-03/PREMIER CYCLE 2025...574.7 KiB
/sites/g/files/bhrskd331/files/2026-03/20230817-BF-WOODSH...536.3 KiB
/sites/g/files/bhrskd331/files/2026-03/2 CYCLE 20250606-B...446.2 KiB
www.uottawa.ca/themes/custom/uottawa/dist/assets/rotunde-mask.png186.1 KiB
www.googletagmanager.com/gtag/js?id=G-GKVJ53FL3H&cx=c&gtm=4e6460178.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-WVKZFC165.0 KiB
www.googletagmanager.com/gtag/js?id=AW-873072808&cx=c&gtm=4e6460145.8 KiB
/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd...133.6 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
nav#block-bq-footer-menu > footer#uo-footer > div.container > img.global-footer__logo-image nav#block-bq-footer-menu > footer#uo-footer > div.container > img.global-footer__logo-image
/themes/custom/uottawa/dist/assets/uottawa-logo-horizonta...
University of Ottawa home page div.nav__section > div.nav__site-branding > a.nav__logo > img.nav__logo--light
www.uottawa.ca/themes/custom/uottawa/dist/assets/logo--white.svg

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

●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 6 user timings
●Avoid long main-thread tasks 18 long tasks found
●Avoid non-composited animations 1 animated element found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 120 ms
●Server Backend Latencies 170 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 260 ms
○INP breakdown
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
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●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 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.
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with 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
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○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.
○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.
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○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.
81

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
connect.facebook.net/en_US/fbevents.js line 273, col 769

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.

URL
/sites/g/files/bhrskd331/files/js/js_f6HUhyIqRKOI6LbMUIhd...
●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 browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
92

SEO

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

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●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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