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

Audit breakdown by category with detailed findings.

35

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
assets.qualified.com/static-media/piperx-loading/Ruby.mp40.0 ms2.6 MiB
www.optimizely.com/assets/opal-bg-16807e11.png0.0 ms246.1 KiB
cdn.optimizely.com/js/26942930964.js120.0 s137.2 KiB
js.qualified.com/qualified.js?token=y5gZpv1sRkv2ZBXW60.0 s116.4 KiB
cdn.optimizely.com/public/26942930964/s/home.js120.0 s109.9 KiB
assets.qualified.com/packs/media/Inter-SemiBold.fcb100c7.woff20.0 ms103.6 KiB
assets.qualified.com/packs/media/Inter-Regular.f1f0c35b.woff20.0 ms97.2 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.4 KiB
www.optimizely.com/assets/index.es-03246ceb.js0.0 ms78.6 KiB
www.optimizely.com/assets/entry-client-049d832d.js0.0 ms77.9 KiB
www.optimizely.com/Util/EPiServer.Forms.Samples/jquery-ui/jquery-ui.min.js0.0 ms67.7 KiB
www.optimizely.com/assets/vidstack-BMPqs-oi-c643bb2c.js0.0 ms66.3 KiB
www.optimizely.com/assets/Figtree-VariableFont_wght-583e9c3c.ttf0.0 ms59.5 KiB
www.optimizely.com/assets/entry-client-1dd1561b.css0.0 ms39.9 KiB
js.monitor.azure.com/scripts/b/ai.2.gbl.min.js1800.0 s46.2 KiB
/signals/config/395965220782133?v=2.9.298&r=stable&domain...1200.0 s44.4 KiB
d1igp3oop3iho5.cloudfront.net/v2/8yoUTdBkNwpVOLCXeZpKdw/zaius-min.js0.0 ms38.3 KiB
www.optimizely.com/assets/motion-8b93ee7d.js0.0 ms36.9 KiB
www.optimizely.com/Util/EPiServer.Forms/jquery-3.5.1.min.js0.0 ms31.5 KiB
/contentassets/90461ceea0184877b2c559273cd1da58/opal-ai-h...24957.0 s49.7 KiB
www.optimizely.com/assets/nb_international_pro_mono-webfont-38982006.woff20.0 ms25.3 KiB
/contentassets/90461ceea0184877b2c559273cd1da58/content-t...24957.0 s37.8 KiB
www.optimizely.com/assets/vidstack-CNjv_Zem-4e56777a.js0.0 ms22.4 KiB
www.optimizely.com/assets/noise-26e2b327.png0.0 ms22.4 KiB
www.optimizely.com/assets/noise-7867172c.png0.0 ms22.4 KiB
www.redditstatic.com/ads/pixel.js?pixel_id=t2_940el60.0 s19.0 KiB
www.optimizely.com/assets/media.component-91d6e760.js0.0 ms18.4 KiB
/contentassets/90461ceea0184877b2c559273cd1da58/commerce-...24957.0 s26.2 KiB
www.optimizely.com/assets/integrations.component-29deb8ce.js0.0 ms15.4 KiB
www.optimizely.com/assets/custom-form-0a4bb47a.css0.0 ms13.3 KiB
js.adsrvr.org/up_loader.1.1.0.js0.0 ms12.2 KiB
www.optimizely.com/Util/EPiServer.Forms/EPiServerForms.min.js0.0 ms11.2 KiB
/contentassets/90461ceea0184877b2c559273cd1da58/experimen...38170.0 s19.7 KiB
www.optimizely.com/assets/primary-footer.component-c5b4db65.css0.0 ms10.4 KiB
scripts.clarity.ms/0.8.60-beta/clarity.js86400.0 s25.0 KiB
a.quora.com/qevents.js14400.0 s14.7 KiB
www.optimizely.com/assets/opti-grid.component-65b7434a.css0.0 ms9.3 KiB
snap.licdn.com/li.lms-analytics/insight.min.js51864.0 s18.7 KiB
www.optimizely.com/contentassets/90461ceea0184877b2c559273cd1da58/marketer.jpg24957.0 s14.1 KiB
www.optimizely.com/Util/EPiServer.Forms.Samples/jquery-ui/jquery-ui.min.css0.0 ms7.9 KiB
www.optimizely.com/assets/navigation.component-dc18ead7.js0.0 ms7.7 KiB
/contentassets/90461ceea0184877b2c559273cd1da58/ecommerce...24957.0 s11.2 KiB
www.optimizely.com/assets/floating-ui.dom-67326cb5.js0.0 ms6.0 KiB
www.optimizely.com/Util/EPiServer.Forms.Samples/js/EPiServerFormsSamples.js0.0 ms5.8 KiB
js.zi-scripts.com/zi-tag.js0.0 ms5.8 KiB
/Util/EPiServer.Forms.Samples/jquery-ui/jquery-ui.structu...0.0 ms5.0 KiB
/contentassets/f58ea35175bd4e25bf399e36d284d6f9/logo_sale...24621.0 s8.0 KiB
www.optimizely.com/contentassets/82315a9240bb4148aa214ffff422bc70/calendly.svg25151.0 s7.5 KiB
www.optimizely.com/assets/hero-home.component-2aebcb7e.js0.0 ms4.4 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
/contentassets/c40ffa9d7ca24ac68fd5e9a1fa7db2a9/gerrie-el...25151.0 s6.7 KiB
/contentassets/c3fc7cbd589947cbb8579ce42d6bf8ec/logo_new-...24958.0 s6.7 KiB
d1igp3oop3iho5.cloudfront.net/v2/8yoUTdBkNwpVOLCXeZpKdw/track-clicks.js0.0 ms3.8 KiB
/contentassets/1761dc93ab884df083a2b83b82428d8f/valtech-l...25151.0 s6.1 KiB
www.optimizely.com/assets/icon.component-b447e609.js0.0 ms3.6 KiB
/contentassets/71dcdc4b907a414ba7057d2624c2883b/dolby-log...24958.0 s5.8 KiB
/contentassets/638fd78be5cc45978c7d8b42bf0d31eb/zoom-logo...24622.0 s5.7 KiB
/contentassets/854ad08b9a5642f1bbda87fdfe6b81d4/nike-logo...24622.0 s5.3 KiB
/globalassets/02.-global-images/optimizely_symbol_full-co...24683.0 s5.2 KiB
/contentassets/04dd25ba79f04298a76e1fb50742a117/shell-log...34393.0 s5.7 KiB
www.optimizely.com/assets/index-835a4768.js0.0 ms3.2 KiB
www.optimizely.com/assets/optiforms.component-b929fb0f.js0.0 ms3.1 KiB
d1igp3oop3iho5.cloudfront.net/v2/8yoUTdBkNwpVOLCXeZpKdw/track-scroll-depth.js0.0 ms2.9 KiB
www.optimizely.com/assets/media.component-3b52cfc2.css0.0 ms2.8 KiB
/Util/EPiServer.Forms.Samples/jquery-ui/jquery-ui.theme.m...0.0 ms2.5 KiB
www.optimizely.com/assets/use-scroll-46d5925b.js0.0 ms2.5 KiB
www.optimizely.com/assets/sticky-panels.component-16df805f.js0.0 ms2.4 KiB
www.optimizely.com/assets/cookie-consent.component-4fd80b89.js0.0 ms2.2 KiB
www.optimizely.com/assets/logo-grid.component-6409e6b5.js0.0 ms2.1 KiB
www.optimizely.com/assets/container-f8669ecc.css0.0 ms1.8 KiB
www.optimizely.com/assets/primary-footer.component-d7db835a.js0.0 ms1.7 KiB
www.optimizely.com/assets/index-25dfeef6.js0.0 ms1.6 KiB
www.optimizely.com/assets/button-block.component-93725adc.js0.0 ms1.6 KiB
www.optimizely.com/Util/EPiServer.Forms/EPiServerForms.css0.0 ms1.4 KiB
www.optimizely.com/scripts/RecaptchaV3ElementBlock.js0.0 ms1.3 KiB
munchkin.marketo.net/munchkin.js0.0 ms1.2 KiB
www.optimizely.com/assets/home.component-e5f67d0d.js0.0 ms1.2 KiB
www.optimizely.com/ClientResources/scripts/optimizely-form-container-events.js0.0 ms1.0 KiB
js.adsrvr.org/universal_pixel.js0.0 ms958 B
www.optimizely.com/assets/custom-checkbox-dc96214f.css0.0 ms935 B
www.optimizely.com/assets/ssr-window.esm-8e29a61f.js0.0 ms892 B
www.optimizely.com/assets/custom-radio-737ddd70.css0.0 ms867 B
www.optimizely.com/assets/use-transform-49f14eae.js0.0 ms770 B
www.optimizely.com/assets/images/forms/tooltip-grey.svg0.0 ms753 B
www.optimizely.com/assets/use-spring-51439a79.js0.0 ms751 B
www.optimizely.com/assets/_grid-overlay-26fff291.js0.0 ms748 B
www.optimizely.com/assets/use-in-view-a0b622bf.js0.0 ms729 B
/collect?v=2&fmt=js&pid=6130&time=1776362152765&conversio...0.0 ms697 B
www.optimizely.com/assets/preload-helper-101896b7.js0.0 ms687 B
www.optimizely.com/assets/images/lists/list-arrow-default.svg0.0 ms666 B
www.optimizely.com/assets/text.component-44a6f4c2.js0.0 ms666 B
/rp.gif?ts=1776362152701&id=t2_940el&event=PageVisit&m.va...0.0 ms666 B
www.optimizely.com/assets/use-animation-5498e06f.js0.0 ms665 B
www.optimizely.com/assets/useMouseHovered-a7416d41.js0.0 ms636 B
www.optimizely.com/assets/useMouse-80a323fb.js0.0 ms611 B
/collect?v=2&fmt=js&pid=6130&time=1776362152738&url=https...0.0 ms607 B
www.optimizely.com/assets/useRafState-df33f303.js0.0 ms597 B
www.optimizely.com/assets/text.component-af81af83.css0.0 ms593 B
www.optimizely.com/assets/useWindowSize-5569fed6.js0.0 ms523 B
www.optimizely.com/assets/arrowRight-6841cc0b.js0.0 ms516 B
www.optimizely.com/assets/resolve-element-95028b28.js0.0 ms491 B
www.optimizely.com/assets/useOutsideClick-8b696677.js0.0 ms490 B
www.optimizely.com/Util/EPiServer.Forms.Samples/css/EPiServerFormsSamples.css0.0 ms466 B
www.optimizely.com/assets/use-motion-value-abf95ba1.js0.0 ms452 B
www.optimizely.com/assets/footer--down-angle-acf0b27c.svg0.0 ms409 B
www.optimizely.com/assets/opti-grid.component-43ac5319.js0.0 ms320 B
/_/ad/0dced461f391446fb8baba558d4264d1/pixel?tag=ViewCont...0.0 ms273 B
/tr/?id=395965220782133&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms16 B
/tr/?id=395965220782133&ev=page_timer&dl=https%3A%2F%2Fww...0.0 ms16 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:1649.22 source:map[column:1882 line:44 type:source-location url:https://www.optimizely.com/assets/entry-client-049d832d.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:1152.119 source:map[type:text value:[unattributed]]] map[reflowTime:10.586 source:map[column:3677 line:0 type:source-location url:https://www.optimizely.com/assets/use-scroll-46d5925b.js urlProvider:network]] map[reflowTime:0.089 source:map[column:4326 line:1 type:source-location url:https://www.optimizely.com/assets/hero-home.component-2aebcb7e.js urlProvider:network]] map[reflowTime:3228.277 source:map[column:101436 line:0 type:source-location url:https://www.optimizely.com/assets/motion-8b93ee7d.js urlProvider:network]] map[reflowTime:0.319 source:map[column:142 line:0 type:source-location url: urlProvider:network]] map[reflowTime:1.386 source:map[column:380 line:580 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:0.346 source:map[column:47 line:303 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:0.682 source:map[column:248 line:379 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:155.253 source:map[column:23219 line:1 type:source-location url:https://scripts.clarity.ms/0.8.60-beta/clarity.js urlProvider:network]] map[reflowTime:1.735 source:map[column:195161 line:1 type:source-location url:https://js.qualified.com/packs/js/multimodal_v2-f8a905b1.js urlProvider:network]] map[reflowTime:2.613 source:map[column:194914 line:1 type:source-location url:https://js.qualified.com/packs/js/multimodal_v2-f8a905b1.js urlProvider:network]] map[reflowTime:72.663 source:map[column:376 line:954 type:source-location url:https://www.googletagmanager.com/gtag/js?id=G-C7SLJ6HMJ5&cx=c&gtm=4e64f0 urlProvider:network]] map[reflowTime:57.994 source:map[column:216227 line:6 type:source-location url:https://js.qualified.com/qualified.js?token=y5gZpv1sRkv2ZBXW urlProvider:network]] map[reflowTime:59.02 source:map[column:22094 line:0 type:source-location url:https://www.redditstatic.com/ads/pixel.js?pixel_id=t2_940el urlProvider:network]]]

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: div.row > div.col-12 > div.absolute > img.opal-shape
path: 1,HTML,1,BODY,3,DIV,0,MAIN,0,DIV,1,DIV,0,SECTION,1,DIV,0,DIV,0,DIV,0,IMG
selector: div.row > div.col-12 > div.absolute > img.opal-shape
snippet: <img class="opal-shape absolute mx-auto origin-center mix-blend-soft-light " src="/assets/opal-bg-16807e11.png" alt="" style="opacity: 0.5;">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

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.

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
div.row > div.col-12 > div.absolute > img.opal-shape div.row > div.col-12 > div.absolute > img.opal-shape
www.optimizely.com/assets/opal-bg-16807e11.png245.7 KiB92.2 KiB
div#skipNav > main.react-module > div.home-hero > ::after div#skipNav > main.react-module > div.home-hero > ::after
www.optimizely.com/assets/noise-7867172c.png22.1 KiB11.4 KiB

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

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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: 232 ms
URLTime Spent
optimizely.com/232 ms
www.optimizely.com/0.0 ms

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: 60 ms 47.8 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.

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
Style & Layout34.5 s
Script Evaluation6.7 s
Other1.7 s
Rendering568 ms
Garbage Collection175 ms
Script Parsing & Compilation154 ms
Parse HTML & CSS49 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Pages with WebSocket cannot enter back/forward cache.Pending browser support
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
Back/forward cache is disabled because WebSocket has been used.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 3.0 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
div.row > div.col-12 > div.absolute > img.opal-shape div.row > div.col-12 > div.absolute > img.opal-shape
www.optimizely.com/assets/opal-bg-16807e11.png
Dolby div.mask-logo-grid > div.flex > div.flex > img.h-[3.2rem]
/contentassets/71dcdc4b907a414ba7057d2624c2883b/dolby-log...
Dolby div.mask-logo-grid > div.flex > div.flex > img.h-[3.2rem]
/contentassets/71dcdc4b907a414ba7057d2624c2883b/dolby-log...
Shell div.mask-logo-grid > div.flex > div.flex > img.h-[3.2rem]
/contentassets/04dd25ba79f04298a76e1fb50742a117/shell-log...
Shell div.mask-logo-grid > div.flex > div.flex > img.h-[3.2rem]
/contentassets/04dd25ba79f04298a76e1fb50742a117/shell-log...
NEW ERA div.flex > div.flex > a > img.h-[3.2rem]
/contentassets/c3fc7cbd589947cbb8579ce42d6bf8ec/logo_new-...
NEW ERA div.flex > div.flex > a > img.h-[3.2rem]
/contentassets/c3fc7cbd589947cbb8579ce42d6bf8ec/logo_new-...
Salesforce div.flex > div.flex > a > img.h-[3.2rem]
/contentassets/f58ea35175bd4e25bf399e36d284d6f9/logo_sale...
Nike div.mask-logo-grid > div.flex > div.flex > img.h-[3.2rem]
/contentassets/854ad08b9a5642f1bbda87fdfe6b81d4/nike-logo...
Salesforce div.flex > div.flex > a > img.h-[3.2rem]
/contentassets/f58ea35175bd4e25bf399e36d284d6f9/logo_sale...
Nike div.mask-logo-grid > div.flex > div.flex > img.h-[3.2rem]
/contentassets/854ad08b9a5642f1bbda87fdfe6b81d4/nike-logo...
Zoom div.mask-logo-grid > div.flex > div.flex > img.h-[3.2rem]
/contentassets/638fd78be5cc45978c7d8b42bf0d31eb/zoom-logo...
Zoom div.mask-logo-grid > div.flex > div.flex > img.h-[3.2rem]
/contentassets/638fd78be5cc45978c7d8b42bf0d31eb/zoom-logo...

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

Layout shift culprits
Optimize DOM size
Font display
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 704 user timings
Avoid long main-thread tasks 20 long tasks found
Network Requests
Network Round Trip Times 150 ms
Server Backend Latencies 180 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 320 ms
Avoid large layout shifts 3 layout shifts found
INP breakdown
Avoid non-composited animations
95

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

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
AI assistant body.theme--dark > q-focus-sentinel > div
After AI assistant body.theme--dark > q-focus-sentinel > div
AI assistant, start div#qualified-multimodal-host > div
AI assistant, end div#qualified-multimodal-host > div

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.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Optimizely Opal (AI) div.text-block-component > div.text-block > div.rte > h3

These are opportunities to improve keyboard navigation in your application.

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
Partners section.primary-footer__section > ul.primary-footer__section-links > li > a.primary-footer__section-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
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Image elements have `[alt]` attributes
Form elements have associated labels
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
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
`<frame>` or `<iframe>` elements have a title
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
Links have a discernible name
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
No element has a `[tabindex]` value greater than 0
Touch targets have sufficient size and spacing.
Document has a main landmark.
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
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
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.
`[lang]` attributes have a valid value
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
Uses ARIA roles only on compatible elements
Image elements do not have `[alt]` attributes that are redundant text.
Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
`<td>` elements in a large `<table>` have one or more table headers.
73

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
Unload event listeners are deprecated and will be removed.
AttributionReporting

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
Error: componentName is empty at https://www.optimizely.com/assets/entry-client-049d832d.js:61:5569 at Array.forEach (<anonymous>) at Gy (https://www.optimizely.com/assets/entry-client-049d832d.js:61:5482) at https://www.optimizely.com/assets/entry-client-049d832d.js:70:6645
Error: componentName is empty at https://www.optimizely.com/assets/entry-client-049d832d.js:61:5569 at Array.forEach (<anonymous>) at Gy (https://www.optimizely.com/assets/entry-client-049d832d.js:61:5482) at https://www.optimizely.com/assets/entry-client-049d832d.js:70:6645
Error: componentName is empty at https://www.optimizely.com/assets/entry-client-049d832d.js:61:5569 at Array.forEach (<anonymous>) at Gy (https://www.optimizely.com/assets/entry-client-049d832d.js:61:5482) at https://www.optimizely.com/assets/entry-client-049d832d.js:70:6645
Error: componentName is empty at https://www.optimizely.com/assets/entry-client-049d832d.js:61:5569 at Array.forEach (<anonymous>) at Gy (https://www.optimizely.com/assets/entry-client-049d832d.js:61:5482) at https://www.optimizely.com/assets/entry-client-049d832d.js:70:6645
Error: componentName is empty at https://www.optimizely.com/assets/entry-client-049d832d.js:61:5569 at Array.forEach (<anonymous>) at Gy (https://www.optimizely.com/assets/entry-client-049d832d.js:61:5482) at https://www.optimizely.com/assets/entry-client-049d832d.js:70:6645
Error: componentName is empty at https://www.optimizely.com/assets/entry-client-049d832d.js:61:5569 at Array.forEach (<anonymous>) at Gy (https://www.optimizely.com/assets/entry-client-049d832d.js:61:5482) at https://www.optimizely.com/assets/entry-client-049d832d.js:70:6645
Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Ea (https://www.optimizely.com/assets/entry-client-049d832d.js:57:4789) at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45388) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Ea (https://www.optimizely.com/assets/entry-client-049d832d.js:57:4789) at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45388) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Ea (https://www.optimizely.com/assets/entry-client-049d832d.js:57:4789) at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45388) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Ea (https://www.optimizely.com/assets/entry-client-049d832d.js:57:4908) at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45388) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Ea (https://www.optimizely.com/assets/entry-client-049d832d.js:57:4908) at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45388) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Ea (https://www.optimizely.com/assets/entry-client-049d832d.js:57:4908) at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45388) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Ea (https://www.optimizely.com/assets/entry-client-049d832d.js:57:4908) at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45388) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Ea (https://www.optimizely.com/assets/entry-client-049d832d.js:57:4908) at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45388) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at Ea (https://www.optimizely.com/assets/entry-client-049d832d.js:57:4908) at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45388) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #423; visit https://reactjs.org/docs/error-decoder.html?invariant=423 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45048) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at Ma (https://www.optimizely.com/assets/entry-client-049d832d.js:59:35774) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34725) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #423; visit https://reactjs.org/docs/error-decoder.html?invariant=423 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45048) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at Ma (https://www.optimizely.com/assets/entry-client-049d832d.js:59:35774) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34725) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #423; visit https://reactjs.org/docs/error-decoder.html?invariant=423 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45048) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at Ma (https://www.optimizely.com/assets/entry-client-049d832d.js:59:35774) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34725) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #423; visit https://reactjs.org/docs/error-decoder.html?invariant=423 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at ip (https://www.optimizely.com/assets/entry-client-049d832d.js:59:45048) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39600) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at Ma (https://www.optimizely.com/assets/entry-client-049d832d.js:59:35774) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34725) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #425; visit https://reactjs.org/docs/error-decoder.html?invariant=425 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at To (https://www.optimizely.com/assets/entry-client-049d832d.js:57:68) at tg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:16018) at rp (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39908) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39661) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #425; visit https://reactjs.org/docs/error-decoder.html?invariant=425 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at To (https://www.optimizely.com/assets/entry-client-049d832d.js:57:68) at tg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:16018) at rp (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39908) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39661) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #425; visit https://reactjs.org/docs/error-decoder.html?invariant=425 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at To (https://www.optimizely.com/assets/entry-client-049d832d.js:57:68) at tg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:16018) at rp (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39908) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39661) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)
Error: Minified React error #425; visit https://reactjs.org/docs/error-decoder.html?invariant=425 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at To (https://www.optimizely.com/assets/entry-client-049d832d.js:57:68) at tg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:18797) at rp (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39908) at np (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39661) at sg (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39528) at _i (https://www.optimizely.com/assets/entry-client-049d832d.js:59:39383) at bd (https://www.optimizely.com/assets/entry-client-049d832d.js:59:34493) at T (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1570) at MessagePort.un (https://www.optimizely.com/assets/entry-client-049d832d.js:44:1940)

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy
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
Ensure CSP is effective against XSS attacks
Use a strong HSTS policy
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
Ensure proper origin isolation with COOP
100

SEO

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

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
Links have descriptive text
Links are crawlable
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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