Lighthouse Desktop

· 0 checks — Desktop 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.

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
www.mimecast.com/dist/fonts/fa-solid-900.woff2	125 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

items: [map[reflowTime:35.811 source:map[column:17 line:2080 type:source-location url:https://www.mimecast.com/ urlProvider:network]] map[reflowTime:0.987 source:map[column:68700 line:4 type:source-location url:https://fpjscdn.net/v3/9bsIAwFA2Yvt74r1OAYZ urlProvider:network]] map[reflowTime:0.209 source:map[column:5865 line:4 type:source-location url:https://fpjscdn.net/v3/9bsIAwFA2Yvt74r1OAYZ urlProvider:network]] map[reflowTime:0.749 source:map[column:91687 line:4 type:source-location url:https://fpjscdn.net/v3/9bsIAwFA2Yvt74r1OAYZ urlProvider:network]] map[reflowTime:0.578 source:map[column:113223 line:4 type:source-location url:https://fpjscdn.net/v3/9bsIAwFA2Yvt74r1OAYZ 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.

	URL	Resource Size	Est Savings
HRM_flatform_homepge_V3.webp `div.row > div.col-md > div.content-block > img.content-block__image`	/api/public/content/ede2235019b14424bab0a9a1c9abba2f?v=c1...	884.0 KiB	829.3 KiB
Ready to get started? Keep ahead of the ever-evolving threat landscape with Mi… `body > main#main > div#compoId2e4f0436d6e14f5da3f9a43446cdfb24`	/api/public/content/c1ae44b9a730409b91bbe297ea2a356d?v=49...	972.7 KiB	827.2 KiB
Lyft Uses Incydr to “Take the Blinders Off” of High-Value Data Movement READ ST… `div#splide01 > div#splide01-track > ul#splide01-list > li#splide01-slide02`	/api/public/content/a94c1fad2377468fb00f6422693797b3?v=88...	642.0 KiB	560.2 KiB
Mimecast’s Email Security and Awareness Come up Clutch for the Boston Red Sox R… `div#splide01 > div#splide01-track > ul#splide01-list > li#splide01-slide03`	/api/public/content/8dc9740f985744579cd51be8475dc371?v=c3...	629.5 KiB	547.8 KiB
Fighting Cancer, Not Spam: Moffitt’s Mimecast Success READ STORY "Implementati… `div#splide01 > div#splide01-track > ul#splide01-list > li#splide01-slide01`	/api/public/content/eca3e1dae9234ebd8c8fa493352e0fe1?v=cb...	567.7 KiB	486.0 KiB
Banked Protects Source Code and Employee Trust with Incydr READ STORY "If peop… `div#splide01 > div#splide01-track > ul#splide01-list > li#splide01-slide04`	/api/public/content/4bc2a8ff0de64778905666ffb6ccbc99?v=0b...	503.7 KiB	421.9 KiB
Small_Gartner MQ for Email Security Platforms.png `div.product-features__grid > div.product-features__images > div.product-features__image > img`	/api/public/content/5f009a9a78724c72bd6385328ba499f5?v=d8...	456.7 KiB	408.0 KiB
hero-carousel-image-1.webp `div.hero-carousel-slide > div.col-md > div.hero-carousel-image > img.content-block__image`	/api/public/content/ba0b35a65dd54dde8ab4197e0b11643c?v=c4...	145.4 KiB	125.2 KiB
logo-mckinsey.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/7472be47564d4de788780ffaac259a49?v=07...	8.5 KiB	7.4 KiB
logo-walmart.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/50422e3dc5b24786978d5954b2420134?v=98...	6.9 KiB	5.8 KiB
logo-loreal.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/faa9dd3c1ad94112ad2d6c69e1f11c86?v=cd...	6.7 KiB	5.6 KiB
logo-cisco.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/3fa7159f4e12491aba859b18723286e9?v=c7...	5.8 KiB	4.9 KiB
logo-rollsroyce.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/40f39462f2e844eabaa3bdcafcde0b79?v=27...	5.4 KiB	4.9 KiB
logo-newbalance.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/96d9ec076db9448e8595f1c444b2cfdf?v=42...	5.5 KiB	4.5 KiB
Mimecast Logo `div.header__menu-banner > div.header__logo-holder > a > img.header__logo-image`	/api/public/content/aac7c7d3363d4892b9f909aa59250d04?v=52...	4.1 KiB	4.1 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:1267.9320002441407 label:Time to first byte subpart:timeToFirstByte] map[duration:1018.5469997558594 label:Resource load delay subpart:resourceLoadDelay] map[duration:141.109 label:Resource load duration subpart:resourceLoadDuration] map[duration:289.358 label:Element render delay subpart:elementRenderDelay]]

lhId: page-15-DIV

nodeLabel: 90% FACE AI-RELATED PLATFORM RISKS AI Evangelist or Anti-AI? No need to choose…

path: 1,HTML,1,BODY,7,MAIN,1,DIV

selector: body > main#main > div#homepage-hero-carousel

snippet: <div id="homepage-hero-carousel" class="column-container navigatable-component dark-theme mc-padding" style="background-image: url("https://assets.mimecast.com/api/public/content/dc84…");">

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-15-DIV

nodeLabel: 90% FACE AI-RELATED PLATFORM RISKS AI Evangelist or Anti-AI? No need to choose…

path: 1,HTML,1,BODY,7,MAIN,1,DIV

selector: body > main#main > div#homepage-hero-carousel

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.mimecast.com/layouts/system/VisitorIdentification.js	1.5 KiB
www.mimecast.com/dist/site.08c4fe9638f114c81e03.css	400.8 KiB	483 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
cdn.optimizely.com/js/30177210136.js	120.0 s	144.6 KiB
rtp-static.marketo.com/rtp/libs/jqueryui/1.13.2/jquery-custom-ui.min.js	0.0 ms	126.0 KiB
fpjscdn.net/v3/9bsIAwFA2Yvt74r1OAYZ	3617.0 s	64.5 KiB
cdn.cookielaw.org/scripttemplates/202405.1.0/otBannerSdk.js	86400.0 s	109.4 KiB
lonrtp1-cdn.marketo.com/rtp-api/v1/rtp.js?aid=mimecast	105.0 s	41.8 KiB
rtp-static.marketo.com/rtp/libs/jquery/3.7.0/jquery.min.js	0.0 ms	30.2 KiB
cdn.mouseflow.com/projects/e24f7e3a-5c9e-4ded-b913-3026146c2cf7.js	86400.0 s	53.0 KiB
www.redditstatic.com/ads/pixel.js	60.0 s	19.0 KiB
scripts.clarity.ms/0.8.59-beta/clarity.js	86400.0 s	26.2 KiB
pixel.byspotify.com/ping.min.js	3600.0 s	10.3 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	86400.0 s	18.7 KiB
rtp-static.marketo.com/rtp/libs/ga-integration-2.0.5.js	0.0 ms	6.0 KiB
cdn.cr-relay.com/v1/site/5f11010e-fb00-434e-9768-42dd5603d912/signals.js	3600.0 s	7.1 KiB
ug-webapp-public-production.s3.amazonaws.com/api/js/wv-ug-IoCqv0Sg83jJrD8G.js	0.0 ms	4.9 KiB
rtp-static.marketo.com/rtp/libs/jquery-ui-insightera-custom-1.9.6.css	0.0 ms	4.2 KiB
bttrack.com/engagement/js?goalId=16174&cb=1776806154509	0.0 ms	3.7 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js	86400.0 s	9.1 KiB
tracker.pixeltracker.co/pixel.js	14400.0 s	5.1 KiB
scout-cdn.salesloft.com/sl.js	14400.0 s	2.8 KiB
munchkin.marketo.net/munchkin.js	0.0 ms	1.2 KiB
cdn.jsdelivr.net/npm/hockeystack@latest/hockeystack.min.js	604800.0 s	10.4 KiB
/rp.gif?ts=1776806153201&id=t2_2s9dur0o&event=PageVisit&m...	0.0 ms	666 B
/collect?v=2&fmt=js&pid=8016&time=1776806153761&li_adsId=...	0.0 ms	432 B
cdn.cookielaw.org/logos/static/ot_close.svg	86400.0 s	645 B
cdn.jsdelivr.net/npm/hockeystack@latest/hockeystack-6sense.min.js	604800.0 s	1.4 KiB
/api/segment?pdata=partner%3Dtap475181%2Cdata%3Dtype%3Asi...	0.0 ms	59 B

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: 204 ms

URL	Time Spent
mimecast.com/	204 ms
www.mimecast.com/	0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 902 ms

URL	Time Spent
www.mimecast.com/	1.0 s

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: 320 ms 365.5 KiB

URL	Transfer Size	Est Savings
www.mimecast.com/dist/site.08c4fe9638f114c81e03.css	399.9 KiB	365.5 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: 580 ms 1.1 MiB

URL	Transfer Size	Est Savings
www.mimecast.com/dist/site.ff160e92f68ef966136a.js	721.7 KiB	649.5 KiB
rtp-static.marketo.com/rtp/libs/jqueryui/1.13.2/jquery-custom-ui.min.js	125.4 KiB	106.1 KiB
cdn.cookielaw.org/scripttemplates/202405.1.0/otBannerSdk.js	109.1 KiB	67.7 KiB
cdn.optimizely.com/js/30177210136.js	144.0 KiB	63.7 KiB
www.googletagmanager.com/gtag/js?id=G-2RRJFGC554&cx=c&gtm=4e64k0h2	170.3 KiB	63.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-M2787TN	186.2 KiB	61.9 KiB
www.googletagmanager.com/gtag/js?id=AW-987806786&cx=c&gtm=4e64k0h2	144.3 KiB	55.8 KiB
cdn.mouseflow.com/projects/e24f7e3a-5c9e-4ded-b913-3026146c2cf7.js	52.3 KiB	39.9 KiB
unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/dist-ClwrCxoa.js	32.8 KiB	31.2 KiB
lonrtp1-cdn.marketo.com/rtp-api/v1/rtp.js?aid=mimecast	41.5 KiB	25.3 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
www.mimecast.com/	798 ms	16 ms	1.2 ms
Unattributable	763 ms	24 ms	0.0 ms
fpjscdn.net/v3/9bsIAwFA2Yvt74r1OAYZ	369 ms	288 ms	0.3 ms
www.googletagmanager.com/gtm.js?id=GTM-M2787TN	302 ms	248 ms	25 ms
unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/dist-ClwrCxoa.js	192 ms	189 ms	0.3 ms
www.googletagmanager.com/gtag/js?id=G-2RRJFGC554&cx=c&gtm=4e64k0h2	163 ms	125 ms	23 ms
cdn.optimizely.com/js/30177210136.js	135 ms	112 ms	18 ms
www.mimecast.com/dist/site.ff160e92f68ef966136a.js	121 ms	79 ms	36 ms
www.googletagmanager.com/gtag/js?id=AW-987806786&cx=c&gtm=4e64k0h2	106 ms	83 ms	21 ms
j.6sc.co/6si.min.js	73 ms	60 ms	2.3 ms
scripts.clarity.ms/0.8.59-beta/clarity.js	71 ms	57 ms	4.7 ms
lonrtp1-cdn.marketo.com/rtp-api/v1/rtp.js?aid=mimecast	60 ms	51 ms	5.2 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.

Category	Time Spent
Script Evaluation	1.6 s
Other	1.2 s
Style & Layout	347 ms
Script Parsing & Compilation	204 ms
Rendering	168 ms
Garbage Collection	43 ms
Parse HTML & CSS	37 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.	Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.	Not actionable

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 45.3 KiB

URL	Transfer Size	Est Savings
rtp-static.marketo.com/rtp/libs/jqueryui/1.13.2/jquery-custom-ui.min.js	125.4 KiB	45.3 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
/api/public/content/b6ba2f10693844dfbb1cb7490b3fbc73?v=71...	1.4 MiB
/api/public/content/c1ae44b9a730409b91bbe297ea2a356d?v=49...	973.5 KiB
/api/public/content/ede2235019b14424bab0a9a1c9abba2f?v=c1...	884.5 KiB
/api/public/content/8d7b26fc312b46df9a9aeb529967138f?v=b8...	763.4 KiB
www.mimecast.com/dist/site.ff160e92f68ef966136a.js	723.0 KiB
/api/public/content/a94c1fad2377468fb00f6422693797b3?v=88...	642.7 KiB
/api/public/content/8dc9740f985744579cd51be8475dc371?v=c3...	630.2 KiB
/npm/@lottiefiles/dotlottie-web@0.71.0/dist/dotlottie-pla...	603.4 KiB
/api/public/content/eca3e1dae9234ebd8c8fa493352e0fe1?v=cb...	568.4 KiB
/api/public/content/981ff7624ff2490f91c8906242a6ae65?v=14...	528.3 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
logo-banked-white.png.svg `a.customer-success__link > div.customer-success__wrap_left > div.customer-success__logo > img.customer-success__item-image`	/api/public/content/4771a5b6e968420e93491afefc7b300f?v=ee...
logo-delta.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/f519e97abc6f44d3b51982b80cf69dfb?v=b9...
logo-delta.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/f519e97abc6f44d3b51982b80cf69dfb?v=b9...
logo-walmart.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/50422e3dc5b24786978d5954b2420134?v=98...
logo-mckinsey.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/7472be47564d4de788780ffaac259a49?v=07...
logo-loreal.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/faa9dd3c1ad94112ad2d6c69e1f11c86?v=cd...
logo-haleon.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/462b9d74b33e470cbe8700c18f305829?v=d7...
logo-walmart.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/50422e3dc5b24786978d5954b2420134?v=98...
logo-mckinsey.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/7472be47564d4de788780ffaac259a49?v=07...
logo-loreal.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/faa9dd3c1ad94112ad2d6c69e1f11c86?v=cd...
logo-haleon.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/462b9d74b33e470cbe8700c18f305829?v=d7...
logo-newbalance.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/96d9ec076db9448e8595f1c444b2cfdf?v=42...
logo-newbalance.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/96d9ec076db9448e8595f1c444b2cfdf?v=42...
logo-cisco.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/3fa7159f4e12491aba859b18723286e9?v=c7...
logo-cisco.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/3fa7159f4e12491aba859b18723286e9?v=c7...
logo-rollsroyce.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/40f39462f2e844eabaa3bdcafcde0b79?v=27...
logo-rollsroyce.png `div.container > div.logo-ticker > div.ticker-track > img.ticker-logo`	/api/public/content/40f39462f2e844eabaa3bdcafcde0b79?v=27...
logo-moffit-white.png.png `a.customer-success__link > div.customer-success__wrap_left > div.customer-success__logo > img.customer-success__item-image`	/api/public/content/50270b3f1ea941cdb3422885793776f7?v=f3...
logo-red-sox-colour.png.svg `a.customer-success__link > div.customer-success__wrap_left > div.customer-success__logo > img.customer-success__item-image`	/api/public/content/e891e761d8144689b5ad9224c9caca17?v=70...
logo-lyft-white.png.svg `a.customer-success__link > div.customer-success__wrap_left > div.customer-success__logo > img.customer-success__item-image`	/api/public/content/da2b22575bdb4853baa09ee47b6fd397?v=e4...

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

●Layout shift culprits

●Optimize DOM size

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 13 user timings

●Avoid long main-thread tasks 8 long tasks found

●Avoid non-composited animations 2 animated elements 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 large layout shifts 2 layout shifts found

○INP breakdown

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

Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
Solutions Products Partners Resources Why Mimecast `div.header__cascading-menu > div.row > div.header__cascading-menu-col > nav#header__nav`

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

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > img `body > img`
body > img `body > img`

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 have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
EN CAREERS SUPPORT LOGIN CONTACT `div.header__utility-menu > div.row > div.col-lg > ul.header__utility-menu-list`

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Privacy Statement `div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-cookie-policy-link`

○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

●`[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

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

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

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

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

●Links are distinguishable without relying on color.

●Links have a discernible name

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

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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Uses ARIA roles only on compatible elements

○`[accesskey]` values are unique

○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

○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.

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

○Identical links have the same purpose.

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

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

Best Practices

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
Fledge	fpjscdn.net/v3/9bsIAwFA2Yvt74r1OAYZ line 4, col 61035
AttributionReporting	snap.licdn.com/li.lms-analytics/insight.min.js

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
bttrack.com/Pixel/Retarget/2911	`Failed to load resource: the server responded with a status of 404 ()`

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	Map URL
www.mimecast.com/dist/site.ff160e92f68ef966136a.js
unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/dotlottie-wc.js	unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/dotlottie-wc.js.map
unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/dist-ClwrCxoa.js	unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/dist-ClwrCxoa.js.map
unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/decorate-C0oFmnNg.js	unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/decorate-C0oFmnNg.js.map
unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/base-dotlottie-wc.js	unpkg.com/@lottiefiles/dotlottie-wc@0.9.12/dist/base-dotlottie-wc.js.map
fpjscdn.net/v3/9bsIAwFA2Yvt74r1OAYZ
cdn.jsdelivr.net/npm/hockeystack@latest/hockeystack.min.js	/sm/9e4aff1ede2bab9784e8c490947bf758aee81038343662c8b4444...
cdn.jsdelivr.net/npm/hockeystack@latest/hockeystack-6sense.min.js	/sm/78dcad763066586f481ea4a6e7cb9effea68b7b88767a62ed862a...

●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

●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

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
www.mimecast.com/use-cases/advanced-bec-protection/	Learn more

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > img `body > img`
body > img `body > img`

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

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`