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
www.mcmaster.ca/wp-content/plugins/revslider/sr6/assets/js/rs6.min.js?ver=6.7.18	0.0 ms	406.5 KiB
/wp-content/themes/child-mcmaster/assets/images/default/C...	0.0 ms	310.7 KiB
/wp-content/themes/child-mcmaster/assets/images/default/S...	0.0 ms	302.4 KiB
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/default/Tours.png	0.0 ms	300.4 KiB
/wp-content/themes/child-mcmaster/assets/js/lib/bodymovin...	0.0 ms	226.6 KiB
/wp-content/themes/child-mcmaster/assets/images/default/M...	0.0 ms	224.5 KiB
/wp-content/themes/child-mcmaster/assets/images/default/B...	0.0 ms	223.6 KiB
/wp-content/themes/child-mcmaster/assets/images/default/M...	0.0 ms	210.4 KiB
/wp-content/themes/child-mcmaster/assets/images/default/A...	0.0 ms	202.4 KiB
/wp-content/themes/child-mcmaster/assets/images/default/A...	0.0 ms	176.4 KiB
/wp-content/themes/child-mcmaster/assets/images/default/A...	0.0 ms	162.7 KiB
/wp-content/plugins/revslider/sr6/assets/js/rbtools.min.j...	0.0 ms	161.8 KiB
/wp-content/themes/child-mcmaster/assets/images/default/W...	0.0 ms	161.3 KiB
/signals/config/1732653317029843?v=2.9.303&r=stable&domai...	1200.0 s	127.8 KiB
www.mcmaster.ca/wp-includes/css/dist/block-library/style.min.css?ver=6.5.8	0.0 ms	111.0 KiB
/wp-content/plugins/formidable/css/formidableforms1.css?v...	0.0 ms	92.2 KiB
/wp-content/themes/child-mcmaster/css/dist/bundle.min.css...	0.0 ms	90.1 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
www.mcmaster.ca/wp-content/plugins/revslider/sr6/assets/css/rs6.css?ver=6.7.18	0.0 ms	57.3 KiB
/wp-content/themes/mm-shared-resources/css/dist/bundle.mi...	0.0 ms	42.3 KiB
www.mcmaster.ca/wp-content/plugins/mm-malinky-ajax-pagination/js/main.js	0.0 ms	29.4 KiB
documents.mcmaster.ca/www/mcmaster.ca/nav-search.js	0.0 ms	16.9 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB
documents.mcmaster.ca/www/mcmaster.ca/global-nav.js	0.0 ms	11.1 KiB
/wp-content/themes/mm-shared-resources/js/dist/bundle.min...	0.0 ms	8.5 KiB
www.mcmaster.ca/wp-content/uploads/2024/07/m24-col.png	0.0 ms	7.3 KiB
www.mcmaster.ca/wp-content/themes/twentysixteen/js/functions.js?ver=20160816	0.0 ms	7.0 KiB
static.hotjar.com/c/hotjar-524612.js?sv=5	60.0 s	7.0 KiB
static.hotjar.com/c/hotjar-5096155.js?sv=6	60.0 s	6.2 KiB
www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/share_icon.svg	0.0 ms	4.7 KiB
/wp-content/themes/child-mcmaster/assets/js/dist/bundle.m...	0.0 ms	4.4 KiB
/wp-content/themes/child-mcmaster/css/font/fontello.woff2...	0.0 ms	4.2 KiB
/wp-content/themes/child-mcmaster/theme-images/image_plac...	0.0 ms	4.2 KiB
cse.google.com/cse.js?theme=ESPRESSO&cx=017560809947805573293:jthpsapkwtk	0.0 ms	3.7 KiB
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/hover/Payroll.svg	0.0 ms	3.4 KiB
/wp-content/themes/mm-shared-resources/assets/fonts/readm...	0.0 ms	3.4 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Alu...	0.0 ms	3.3 KiB
/wp-content/themes/child-mcmaster/assets/images/default/A...	0.0 ms	2.6 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/VP ...	0.0 ms	2.5 KiB
documents.mcmaster.ca/www/mcmaster.ca/nav-builder.js	0.0 ms	2.4 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Tra...	0.0 ms	2.3 KiB
/wp-content/themes/child-mcmaster/assets/images/default/T...	0.0 ms	2.3 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Con...	0.0 ms	2.2 KiB
/wp-content/themes/child-mcmaster/assets/images/default/C...	0.0 ms	2.2 KiB
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/hover/Awards.svg	0.0 ms	2.1 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Edi...	0.0 ms	2.0 KiB
/wp-content/themes/child-mcmaster/assets/images/default/A...	0.0 ms	2.0 KiB
/wp-content/themes/child-mcmaster/assets/images/default/V...	0.0 ms	1.9 KiB
/wp-content/themes/child-mcmaster/assets/images/default/E...	0.0 ms	1.8 KiB
www.mcmaster.ca/wp-content/themes/mm-shared-resources/css/subheader-only.css	0.0 ms	1.8 KiB
/wp-content/themes/child-mcmaster/assets/images/default/P...	0.0 ms	1.7 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Imp...	0.0 ms	1.6 KiB
/wp-content/themes/child-mcmaster/assets/images/default/I...	0.0 ms	1.6 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Hea...	0.0 ms	1.5 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Gra...	0.0 ms	1.5 KiB
/wp-content/themes/child-mcmaster/assets/images/default/G...	0.0 ms	1.4 KiB
/wp-content/themes/child-mcmaster/assets/images/default/H...	0.0 ms	1.4 KiB
/wp-content/themes/twentysixteen/js/skip-link-focus-fix.j...	0.0 ms	1.4 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Inf...	0.0 ms	1.3 KiB
/wp-content/themes/child-mcmaster/assets/images/default/I...	0.0 ms	1.3 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Inf...	0.0 ms	1.3 KiB
/wp-content/themes/child-mcmaster/assets/images/default/I...	0.0 ms	1.3 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Und...	0.0 ms	1.3 KiB
/wp-content/themes/child-mcmaster/assets/images/default/U...	0.0 ms	1.3 KiB
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/hover/Mosaic.svg	0.0 ms	1.2 KiB
/wp-content/themes/child-mcmaster/assets/images/default/M...	0.0 ms	1.2 KiB
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/hover/Network.svg	0.0 ms	1.2 KiB
/wp-content/themes/child-mcmaster/assets/images/default/N...	0.0 ms	1.2 KiB
www.google.com/cse/static/style/look/v6/espresso.css	3000.0 s	1.4 KiB
www.mcmaster.ca/wp-content/themes/mm-shared-resources/assets/subheader-only.js	0.0 ms	1.1 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Exa...	0.0 ms	1.1 KiB
/wp-content/themes/child-mcmaster/assets/images/default/E...	0.0 ms	1.1 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Aca...	0.0 ms	1.1 KiB
/wp-content/themes/child-mcmaster/assets/images/default/A...	0.0 ms	1.1 KiB
/wp-content/themes/child-mcmaster/assets/images/hover/Alu...	0.0 ms	993 B
www.mcmaster.ca/wp-content/plugins/mm-malinky-ajax-pagination/css/style.css	0.0 ms	975 B
/wp-content/themes/child-mcmaster/assets/images/hover/Int...	0.0 ms	950 B
/wp-content/themes/child-mcmaster/assets/images/default/I...	0.0 ms	899 B
/wp-content/themes/child-mcmaster/assets/images/default/A...	0.0 ms	775 B
/wp-content/themes/mm-shared-resources/assets/images/chev...	0.0 ms	611 B
/tr/?id=1732653317029843&ev=PageView&dl=https%3A%2F%2Fwww...	0.0 ms	18 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:0.090957] map[node:map[boundingRect:map[bottom:1298 height:1298 left:0 right:412 top:0 width:412] lhId:page-7-DIV nodeLabel:Future Students Tours Explore Campus < Admissions Learn More Undergradua… path:1,HTML,1,BODY,9,DIV selector:body.home > div.grid-container snippet:<div class="grid-container full"> type:node] score:0.082789 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:737 height:50 left:42 right:92 top:687 width:50] lhId:page-13-IMG nodeLabel:Undergraduate icon path:1,HTML,1,BODY,9,DIV,0,UL,0,LI,1,DIV,0,DIV,0,DIV,1,DIV,0,UL,0,LI,0,A,0,SPAN,0,IMG selector:li > a > span.tab-icon > img snippet:<img src="/wp-content/themes/child-mcmaster/assets/images/default/Undergrad.svg" alt="Undergraduate icon"> type:node]]] type:subitems]] map[score:0.007382] map[node:map[boundingRect:map[bottom:737 height:50 left:42 right:370 top:687 width:328] lhId:page-6-A nodeLabel: Undergraduate path:1,HTML,1,BODY,9,DIV,0,UL,0,LI,1,DIV,0,DIV,0,DIV,1,DIV,0,UL,0,LI,0,A selector:div.panel-links > ul > li > a snippet:<a href="https://future.mcmaster.ca/" tabindex="0"> type:node] score:0.000773 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:737 height:50 left:42 right:92 top:687 width:50] lhId:page-13-IMG nodeLabel:Undergraduate icon path:1,HTML,1,BODY,9,DIV,0,UL,0,LI,1,DIV,0,DIV,0,DIV,1,DIV,0,UL,0,LI,0,A,0,SPAN,0,IMG selector:li > a > span.tab-icon > img snippet:<img src="/wp-content/themes/child-mcmaster/assets/images/default/Undergrad.svg" alt="Undergraduate icon"> type:node]]] type:subitems]] map[score:1.3e-05 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:737 height:50 left:42 right:92 top:687 width:50] lhId:page-13-IMG nodeLabel:Undergraduate icon path:1,HTML,1,BODY,9,DIV,0,UL,0,LI,1,DIV,0,DIV,0,DIV,1,DIV,0,UL,0,LI,0,A,0,SPAN,0,IMG selector:li > a > span.tab-icon > img snippet:<img src="/wp-content/themes/child-mcmaster/assets/images/default/Undergrad.svg" alt="Undergraduate icon"> type:node]] map[cause:Web font extra:map[type:url value:https://www.mcmaster.ca/wp-content/themes/mm-shared-resources/assets/fonts/readmore-arrow.woff?87961176]]] type:subitems]]]

items: [map[node:map[type:text value:Total] score:0.757029] map[node:map[boundingRect:map[bottom:1935 height:606 left:0 right:412 top:1328 width:412] lhId:page-11-DIV nodeLabel:Academics Business Engineering Health Sciences Humanities Science Social Scienc… path:1,HTML,1,BODY,13,DIV selector:body.home > div.grid-container snippet:<div class="grid-container section academics"> type:node] score:0.549281 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2361 height:215 left:24 right:388 top:2146 width:364] lhId:page-14-IMG nodeLabel:empty-image path:1,HTML,1,BODY,18,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.large-5 > div.image-background > a > img.large-excerpt-image-placeholder snippet:<img class="large-excerpt-image-placeholder" src="https://www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/imag…" alt="empty-image"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1137 height:80 left:0 right:412 top:1057 width:412] lhId:page-4-LI nodeLabel:Research & Innovation path:1,HTML,1,BODY,9,DIV,0,UL,2,LI selector:body.home > div.grid-container > ul#navbarsec > li.large-auto snippet:<li class="large-auto cell accordion-item" data-accordion-item=""> type:node] score:0.058733 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2361 height:215 left:24 right:388 top:2146 width:364] lhId:page-14-IMG nodeLabel:empty-image path:1,HTML,1,BODY,18,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.large-5 > div.image-background > a > img.large-excerpt-image-placeholder snippet:<img class="large-excerpt-image-placeholder" src="https://www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/imag…" alt="empty-image"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1298 height:81 left:0 right:412 top:1217 width:412] lhId:page-2-LI nodeLabel:Faculty & Staff path:1,HTML,1,BODY,9,DIV,0,UL,4,LI selector:body.home > div.grid-container > ul#navbarsec > li.large-auto snippet:<li class="large-auto cell accordion-item" data-accordion-item=""> type:node] score:0.048603 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:737 height:50 left:42 right:92 top:687 width:50] lhId:page-13-IMG nodeLabel:Undergraduate icon path:1,HTML,1,BODY,9,DIV,0,UL,0,LI,1,DIV,0,DIV,0,DIV,1,DIV,0,UL,0,LI,0,A,0,SPAN,0,IMG selector:li > a > span.tab-icon > img snippet:<img src="/wp-content/themes/child-mcmaster/assets/images/default/Undergrad.svg" alt="Undergraduate icon"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1935 height:606 left:0 right:412 top:1328 width:412] lhId:page-11-DIV nodeLabel:Academics Business Engineering Health Sciences Humanities Science Social Scienc… path:1,HTML,1,BODY,13,DIV selector:body.home > div.grid-container snippet:<div class="grid-container section academics"> type:node] score:0.028508 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2361 height:215 left:24 right:388 top:2146 width:364] lhId:page-14-IMG nodeLabel:empty-image path:1,HTML,1,BODY,18,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.large-5 > div.image-background > a > img.large-excerpt-image-placeholder snippet:<img class="large-excerpt-image-placeholder" src="https://www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/imag…" alt="empty-image"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1935 height:606 left:0 right:412 top:1328 width:412] lhId:page-11-DIV nodeLabel:Academics Business Engineering Health Sciences Humanities Science Social Scienc… path:1,HTML,1,BODY,13,DIV selector:body.home > div.grid-container snippet:<div class="grid-container section academics"> type:node] score:0.026365 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2361 height:215 left:24 right:388 top:2146 width:364] lhId:page-14-IMG nodeLabel:empty-image path:1,HTML,1,BODY,18,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.large-5 > div.image-background > a > img.large-excerpt-image-placeholder snippet:<img class="large-excerpt-image-placeholder" src="https://www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/imag…" alt="empty-image"> type:node]]] type:subitems]]]

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.

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
/wp-content/themes/mm-shared-resources/assets/fonts/readm...	130 ms
/wp-content/themes/child-mcmaster/css/font/fontello.woff2...	130 ms
/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu...	85 ms
/s/robotocondensed/v31/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQ...	80 ms
fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2	80 ms
fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLDz8Z1xlFd2JQEk.woff2	65 ms
fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2	60 ms
fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLBT5Z1xlFd2JQEk.woff2	40 ms
fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLGT9Z1xlFd2JQEk.woff2	35 ms
fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLEj6Z1xlFd2JQEk.woff2	30 ms
fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2	25 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
Tours `div.panel-images-outer > div.panel-images-wrapper > a > img`	www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/default/Tours.png	300.1 KiB	272.0 KiB
Admissions `div.panel-images-outer > div.panel-images-wrapper > a > img`	/wp-content/themes/child-mcmaster/assets/images/default/A...	162.4 KiB	134.3 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:2085.186 label:Time to first byte subpart:timeToFirstByte] map[duration:18.683 label:Resource load delay subpart:resourceLoadDelay] map[duration:855.716 label:Resource load duration subpart:resourceLoadDuration] map[duration:2015.171 label:Element render delay subpart:elementRenderDelay]]

lhId: page-1-IMG

nodeLabel: Admissions

path: 1,HTML,1,BODY,9,DIV,0,UL,0,LI,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,A,0,IMG

selector: div.panel-images-outer > div.panel-images-wrapper > a > img

snippet: <img src="/wp-content/themes/child-mcmaster/assets/images/default/Admissions.png" alt="Admissions">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-1-IMG

nodeLabel: Admissions

path: 1,HTML,1,BODY,9,DIV,0,UL,0,LI,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,A,0,IMG

selector: div.panel-images-outer > div.panel-images-wrapper > a > img

snippet: <img src="/wp-content/themes/child-mcmaster/assets/images/default/Admissions.png" alt="Admissions">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
www.mcmaster.ca/	http/1.1
/wp-content/plugins/formidable/css/formidableforms1.css?v...	http/1.1
www.mcmaster.ca/wp-includes/css/dist/block-library/style.min.css?ver=6.5.8	http/1.1
/wp-content/themes/mm-shared-resources/css/dist/bundle.mi...	http/1.1
/wp-content/themes/child-mcmaster/css/dist/bundle.min.css...	http/1.1
www.mcmaster.ca/wp-content/plugins/mm-malinky-ajax-pagination/css/style.css	http/1.1
/wp-content/themes/mm-shared-resources/js/dist/bundle.min...	http/1.1
/wp-content/themes/child-mcmaster/assets/js/dist/bundle.m...	http/1.1
www.mcmaster.ca/wp-content/themes/mm-shared-resources/css/subheader-only.css	http/1.1
www.mcmaster.ca/wp-content/uploads/2024/07/m24-col.png	http/1.1
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/default/Tours.png	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/A...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/U...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Und...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/G...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Gra...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/I...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Int...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/C...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Con...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/M...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/A...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/A...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Aca...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/E...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Exa...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/I...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Imp...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/T...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Tra...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/M...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/B...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/V...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/VP ...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/I...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Inf...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/A...	http/1.1
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/hover/Awards.svg	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/I...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Inf...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/A...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/S...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/A...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Alu...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/E...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Edi...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/N...	http/1.1
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/hover/Network.svg	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/W...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/C...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/M...	http/1.1
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/hover/Mosaic.svg	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/P...	http/1.1
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/hover/Payroll.svg	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/A...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Alu...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/default/H...	http/1.1
/wp-content/themes/child-mcmaster/assets/images/hover/Hea...	http/1.1
/wp-content/themes/child-mcmaster/theme-images/image_plac...	http/1.1
www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/share_icon.svg	http/1.1
www.mcmaster.ca/wp-content/themes/mm-shared-resources/assets/subheader-only.js	http/1.1
www.mcmaster.ca/wp-content/plugins/revslider/sr6/assets/css/rs6.css?ver=6.7.18	http/1.1
/wp-content/plugins/revslider/sr6/assets/js/rbtools.min.j...	http/1.1
www.mcmaster.ca/wp-content/plugins/revslider/sr6/assets/js/rs6.min.js?ver=6.7.18	http/1.1
/wp-content/themes/child-mcmaster/assets/js/lib/bodymovin...	http/1.1
/wp-content/themes/twentysixteen/js/skip-link-focus-fix.j...	http/1.1
www.mcmaster.ca/wp-content/themes/twentysixteen/js/functions.js?ver=20160816	http/1.1
www.mcmaster.ca/wp-content/plugins/mm-malinky-ajax-pagination/js/main.js	http/1.1
/wp-content/themes/mm-shared-resources/assets/images/chev...	http/1.1
/wp-content/themes/mm-shared-resources/assets/fonts/readm...	http/1.1
/wp-content/themes/child-mcmaster/css/font/fontello.woff2...	http/1.1
www.mcmaster.ca/favicon.ico	http/1.1

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.

URL	Transfer Size	Duration
www.mcmaster.ca/wp-includes/css/dist/block-library/style.min.css?ver=6.5.8	111.0 KiB	3.2 s
/wp-content/themes/child-mcmaster/css/dist/bundle.min.css...	90.1 KiB	2.9 s
/wp-content/themes/child-mcmaster/assets/js/dist/bundle.m...	4.4 KiB	436 ms
/wp-content/themes/mm-shared-resources/js/dist/bundle.min...	8.5 KiB	436 ms
/wp-content/themes/mm-shared-resources/css/dist/bundle.mi...	42.3 KiB	1.8 s
www.mcmaster.ca/wp-content/plugins/mm-malinky-ajax-pagination/css/style.css	975 B	590 ms
www.mcmaster.ca/wp-content/themes/mm-shared-resources/css/subheader-only.css	1.8 KiB	590 ms
/wp-content/plugins/formidable/css/formidableforms1.css?v...	92.2 KiB	2.8 s
cdnjs.cloudflare.com/ajax/libs/foundation/6.4.2/js/foundation.min.js?ver=6.5.8	27.1 KiB	666 ms
cdnjs.cloudflare.com/ajax/libs/foundation/6.4.2/css/foundation.min.css?ver=6.5.8	13.3 KiB	1.3 s
cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js?ver=6.5.8	30.0 KiB	999 ms
cdnjs.cloudflare.com/ajax/libs/fancybox/3.5.7/jquery.fancybox.min.css?ver=164520	3.0 KiB
/ajax/libs/jquery-migrate/1.4.1/jquery-migrate.min.js?ver...	4.1 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: 1.7 s

URL	Time Spent
mcmaster.ca/	1.1 s
www.mcmaster.ca/	630 ms
www.mcmaster.ca/	0.0 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.

Element	Layout shift score
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`	0.549
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`	0.083
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`	0.059
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`	0.049
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`	0.029
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`	0.026
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`	0.024
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`	0.022
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`	0.007
Undergraduate `div.panel-links > ul > li > a`	0.001
	0.000

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

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: 170 ms 13.8 KiB

URL	Transfer Size	Est Savings
www.mcmaster.ca/wp-content/plugins/revslider/sr6/assets/css/rs6.css?ver=6.7.18	57.3 KiB	8.6 KiB
www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.css	9.7 KiB	2.8 KiB
documents.mcmaster.ca/www/mcmaster.ca/global-nav.css	8.3 KiB	2.4 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.2 s 427.5 KiB

URL	Transfer Size	Est Savings
www.mcmaster.ca/wp-includes/css/dist/block-library/style.min.css?ver=6.5.8	110.7 KiB	110.6 KiB
/wp-content/plugins/formidable/css/formidableforms1.css?v...	91.9 KiB	91.9 KiB
/wp-content/themes/child-mcmaster/css/dist/bundle.min.css...	89.8 KiB	80.1 KiB
www.mcmaster.ca/wp-content/plugins/revslider/sr6/assets/css/rs6.css?ver=6.7.18	57.0 KiB	57.0 KiB
/wp-content/themes/mm-shared-resources/css/dist/bundle.mi...	42.0 KiB	38.9 KiB
cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css	24.7 KiB	23.5 KiB
cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css	13.1 KiB	13.1 KiB
cdnjs.cloudflare.com/ajax/libs/foundation/6.4.2/css/foundation.min.css?ver=6.5.8	13.0 KiB	12.4 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 6.4 s 1.2 MiB

URL	Transfer Size	Est Savings
www.mcmaster.ca/wp-content/plugins/revslider/sr6/assets/js/rs6.min.js?ver=6.7.18	406.2 KiB	395.9 KiB
/wp-content/themes/child-mcmaster/assets/js/lib/bodymovin...	226.3 KiB	201.5 KiB
/wp-content/plugins/revslider/sr6/assets/js/rbtools.min.j...	161.5 KiB	112.9 KiB
www.googletagmanager.com/gtag/js?id=UA-110021756-3&cx=c&gtm=4e64h1	124.1 KiB	91.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-PSD2PNCX	132.9 KiB	67.4 KiB
/cse/static/element/b33cba5881f68fbf/cse_element__en.js?u...	98.5 KiB	66.7 KiB
www.googletagmanager.com/gtag/js?id=UA-110021756-3	125.1 KiB	63.7 KiB
www.googletagmanager.com/gtag/js?id=G-RDQVEKX8PV&cx=c&gtm=4e64h1	160.6 KiB	63.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-NZ63KNV	123.2 KiB	62.7 KiB
script.hotjar.com/modules.6a0f3932cb1341a35c18.js	56.1 KiB	37.5 KiB
/signals/config/1732653317029843?v=2.9.303&r=stable&domai...	127.7 KiB	35.9 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	29.7 KiB
www.mcmaster.ca/wp-content/plugins/mm-malinky-ajax-pagination/js/main.js	29.1 KiB	23.4 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	1.0 s	63 ms	0.0 ms
www.mcmaster.ca/	584 ms	16 ms	8.8 ms
/signals/config/1732653317029843?v=2.9.303&r=stable&domai...	281 ms	230 ms	38 ms
www.googletagmanager.com/gtag/js?id=G-RDQVEKX8PV&cx=c&gtm=4e64h1	235 ms	196 ms	36 ms
cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js?ver=6.5.8	227 ms	132 ms	7.6 ms
script.hotjar.com/modules.6a0f3932cb1341a35c18.js	218 ms	152 ms	33 ms
www.googletagmanager.com/gtm.js?id=GTM-NZ63KNV	203 ms	168 ms	31 ms
connect.facebook.net/en_US/fbevents.js	139 ms	106 ms	26 ms
www.googletagmanager.com/gtm.js?id=GTM-PSD2PNCX	136 ms	104 ms	30 ms
/wp-content/plugins/revslider/sr6/assets/js/rbtools.min.j...	120 ms	45 ms	11 ms
www.googletagmanager.com/gtag/js?id=UA-110021756-3	112 ms	88 ms	22 ms
/wp-content/themes/child-mcmaster/assets/js/lib/bodymovin...	56 ms	19 ms	16 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	1.5 s
Other	1.0 s
Style & Layout	457 ms
Script Parsing & Compilation	379 ms
Rendering	195 ms
Parse HTML & CSS	106 ms
Garbage Collection	63 ms

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 30.4 KiB

URL	Transfer Size	Est Savings
www.mcmaster.ca/wp-content/plugins/mm-malinky-ajax-pagination/js/main.js	29.1 KiB	17.6 KiB
documents.mcmaster.ca/www/mcmaster.ca/global-nav.js	10.8 KiB	5.6 KiB
documents.mcmaster.ca/www/mcmaster.ca/nav-search.js	16.6 KiB	5.1 KiB
www.mcmaster.ca/wp-content/themes/twentysixteen/js/functions.js?ver=20160816	6.7 KiB	2.1 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
www.mcmaster.ca/wp-content/plugins/revslider/sr6/assets/js/rs6.min.js?ver=6.7.18	406.5 KiB
/wp-content/themes/child-mcmaster/assets/images/default/C...	310.7 KiB
/wp-content/themes/child-mcmaster/assets/images/default/S...	302.4 KiB
www.mcmaster.ca/wp-content/themes/child-mcmaster/assets/images/default/Tours.png	300.4 KiB
/wp-content/themes/child-mcmaster/assets/js/lib/bodymovin...	226.6 KiB
/wp-content/themes/child-mcmaster/assets/images/default/M...	224.5 KiB
/wp-content/themes/child-mcmaster/assets/images/default/B...	223.6 KiB
/wp-content/themes/child-mcmaster/assets/images/default/M...	210.4 KiB
/wp-content/themes/child-mcmaster/assets/images/default/A...	202.4 KiB
/wp-content/themes/child-mcmaster/assets/images/default/A...	176.4 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
empty-image `div.large-5 > div.image-background > a > img.large-excerpt-image-placeholder`	/wp-content/themes/child-mcmaster/theme-images/image_plac...
empty-image `div.large-5 > div.image-background > a > img.large-excerpt-image-placeholder`	/wp-content/themes/child-mcmaster/theme-images/image_plac...
empty-image `div.large-5 > div.image-background > a > img.large-excerpt-image-placeholder`	/wp-content/themes/child-mcmaster/theme-images/image_plac...
empty-image `div.large-5 > div.image-background > a > img.large-excerpt-image-placeholder`	/wp-content/themes/child-mcmaster/theme-images/image_plac...
Undergraduate icon `li > a > span.tab-icon > img`	/wp-content/themes/child-mcmaster/assets/images/default/U...
Graduate icon `li > a > span.tab-icon > img`	/wp-content/themes/child-mcmaster/assets/images/default/G...
International icon `li > a > span.tab-icon > img`	/wp-content/themes/child-mcmaster/assets/images/default/I...
Continuing Education icon `li > a > span.tab-icon > img`	/wp-content/themes/child-mcmaster/assets/images/default/C...
Share `div.social-share > div.social-share-desktop > div.social-placeholder > img`	www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/share_icon.svg
Share `div.social-share > div.social-share-desktop > div.social-placeholder > img`	www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/share_icon.svg
Share `div.social-share > div.social-share-desktop > div.social-placeholder > img`	www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/share_icon.svg
Share `div.social-share > div.social-share-desktop > div.social-placeholder > img`	www.mcmaster.ca/wp-content/themes/child-mcmaster/theme-images/share_icon.svg

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

●Optimize DOM size

●Forced reflow

●Optimize viewport for mobile

●User Timing marks and measures 7 user timings

●Avoid long main-thread tasks 13 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 110 ms

●Server Backend Latencies 130 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 140 ms

○INP breakdown

○Avoid non-composited animations

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.

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Future Students Tours Explore Campus < Admissions Learn More Undergradua… `body.home > div.grid-container > ul#navbarsec`

Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Future Students `div.grid-container > ul#navbarsec > li.is-active > a#panel1-label`
Current Students `div.grid-container > ul#navbarsec > li.large-auto > a#panel2-label`
Research & Innovation `div.grid-container > ul#navbarsec > li.large-auto > a#panel3-label`
Alumni `div.grid-container > ul#navbarsec > li.large-auto > a#panel4-label`
Faculty & Staff `div.grid-container > ul#navbarsec > li.large-auto > a#panel5-label`

Using ARIA attributes in roles where they are prohibited can mean that important information is not communicated to users of assistive technologies. Learn more about prohibited ARIA roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
McMaster University — Brighter World `footer#mac-footer > div.footer__inner > div.footer__row > div.footer__logo-lockup`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.footer__inner > div.footer__row > div.footer__logo-lockup > a `div.footer__inner > div.footer__row > div.footer__logo-lockup > a`

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

Tables and lists

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Future Students Tours Explore Campus < Admissions Learn More Undergradua… `body.home > div.grid-container > ul#navbarsec > li.is-active`
Current Students `body.home > div.grid-container > ul#navbarsec > li.large-auto`
Research & Innovation `body.home > div.grid-container > ul#navbarsec > li.large-auto`
Alumni `body.home > div.grid-container > ul#navbarsec > li.large-auto`
Faculty & Staff `body.home > div.grid-container > ul#navbarsec > li.large-auto`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html.js `html.js`

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

●`[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

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

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

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

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

●Links are distinguishable without relying on color.

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

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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

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

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with 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

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

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

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Elements with visible text labels have matching accessible names.

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

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

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URL	Request Resolution
www.mcmaster.ca/	Allowed

User Experience

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
McMaster University `div#mcmaster-subheader > div.header__inner > a#mcmaster-brand > img`	www.mcmaster.ca/wp-content/uploads/2024/07/m24-col.png	140 x 80 (1.75)	316 x 168 (1.88)

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
AttributionReporting	connect.facebook.net/en_US/fbevents.js line 279, col 769

●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

●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 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

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

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
news.mcmaster.ca/award-winning-ta-nabil-rajput-supported-12-courses/	Read More
/university-veterinarian-kathleen-delaney-receives-harry-...	Read More
/what-do-we-know-about-research-only-peptides-qa-with-exp...	Read More
/paradise-restored-mcmaster-brings-dead-marsh-back-to-lif...	Read More

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

●Document has a meta description

●Page has successful HTTP status code

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`