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Lighthouse Desktop

· 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.

70

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
www.theiet.org/Themes/base/js/index-faeb5270.js0.0 ms43.1 KiB
www.theiet.org/Themes/base/css/styles.min.css?v=13.3.00.0 ms42.4 KiB
js.monitor.azure.com/scripts/b/ai.2.min.js1800.0 s46.2 KiB
www.theiet.org/Themes/base/js/index-05f4331b.js0.0 ms37.7 KiB
/uc.js?cbid=32853404-389a-468c-95fb-79ebc39057ef&implemen...980.0 s27.0 KiB
ietp-web-app-global-assets.azurewebsites.net/media/pfqdy5jk/weibo-icon.png0.0 ms24.0 KiB
rum-agent.na-01.cloud.solarwinds.com/ra-e-1780603686429937664.js14400.0 s27.0 KiB
www.theiet.org/Themes/base/js/main.js?v=13.3.00.0 ms9.4 KiB
/media/p2mdmbxp/web_low-angle-view-crowded-residential-to...604800.0 s87.2 KiB
static.responsetap.com/static/scripts/inf_76.js?h=5723774165a404c2c59c3600.0 s10.1 KiB
www.theiet.org/Themes/base/js/iet-main-navigation.entry.js0.0 ms7.5 KiB
ietp-web-app-global-assets.azurewebsites.net/media/13ghi50o/wechat-icon.png0.0 ms7.1 KiB
www.theiet.org/Themes/base/js/cmstoolkit-components.esm.js0.0 ms5.1 KiB
www.theiet.org/Themes/base/js/iet-button.entry.js0.0 ms4.8 KiB
/media/24nnk1mj/one-of-the-hydrogen-powered-generators.jp...604800.0 s47.9 KiB
www.theiet.org/Themes/base/js/iet-cta-full-width.entry.js0.0 ms4.7 KiB
www.theiet.org/Themes/base/js/iet-button-collection.entry.js0.0 ms4.7 KiB
/media/5grcdsl2/cpd-advisors.png?format=webp&quality=80&w...604800.0 s45.6 KiB
www.theiet.org/Themes/base/js/iet-secondary-navigation.entry.js0.0 ms4.5 KiB
/media/10985/group-of-people-looking-at-a-device.jpg?form...604800.0 s44.0 KiB
/media/wrilgzyb/safer-homes.png?format=webp&quality=80&wi...604800.0 s43.7 KiB
www.theiet.org/Themes/base/js/iet-global-bar.entry.js0.0 ms3.7 KiB
www.theiet.org/Themes/base/js/iet-copy-module.entry.js0.0 ms3.4 KiB
www.theiet.org/Themes/base/js/iet-cta.entry.js0.0 ms3.3 KiB
www.theiet.org/Themes/base/js/iet-global-bar.service-d990708d.js0.0 ms2.8 KiB
www.theiet.org/Themes/base/js/iet-user-panel.entry.js0.0 ms2.7 KiB
/media/ql0ewqvb/happy-agronomist-standing-with-laptop-in-...604800.0 s26.8 KiB
www.theiet.org/Themes/base/js/iet-homepage-banner.entry.js0.0 ms2.6 KiB
www.theiet.org/Themes/base/js/iet-site-header.entry.js0.0 ms2.5 KiB
/media/10112/one-to-one-support-cropped.jpg?format=webp&q...604800.0 s25.2 KiB
www.theiet.org/Themes/base/js/iet-global-search.entry.js0.0 ms2.5 KiB
ietp-web-app-global-assets.azurewebsites.net/media/2zycdsf5/instagram.svg0.0 ms2.1 KiB
www.theiet.org/Themes/base/js/iet-media-item.entry.js0.0 ms2.1 KiB
/media/rzkmovpa/cta_6x4_03.webp?format=webp&quality=80&wi...604800.0 s17.6 KiB
/media/2uao1mok/iet_engx_icon_dark_background.svg0.0 ms1.5 KiB
ietp-web-app-global-assets.azurewebsites.net/media/tfqfqayy/linkedin.svg0.0 ms1.3 KiB
/media/2563/untitled-7.jpg?format=webp&quality=80&width=4...604800.0 s12.9 KiB
ietp-web-app-global-assets.azurewebsites.net/media/xkxkxlst/youtube.svg0.0 ms1.3 KiB
www.theiet.org/Themes/base/js/element.service-647e64ad.js0.0 ms821 B
www.theiet.org/Themes/base/js/constants-714418d0.js0.0 ms655 B
www.theiet.org/Themes/base/js/app-globals-0f993ce5.js0.0 ms311 B
/p.css?s=1&k=eag8ezh&ht=tk&f=15528.15530.17252.17253&a=14...604800.0 s172 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:0.253854] map[node:map[boundingRect:map[bottom:4412 height:4119 left:0 right:1350 top:293 width:1350] lhId:page-7-MAIN nodeLabel:Start of main content Working to engineer a better world We inspire, inform an… path:1,HTML,1,BODY,7,MAIN selector:body.other-browser > main.row snippet:<main class="row"> type:node] score:0.183546 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:183 height:83 left:15 right:433 top:100 width:418] lhId:page-4-IMG nodeLabel:IET logo - link to site homepage path:1,HTML,1,BODY,6,HEADER,0,IET-SITE-HEADER,1,DIV,0,A,0,DIV,0,IET-MEDIA-ITEM,1,PICTURE,1,IMG selector:div.umb-block-list > iet-media-item.sc-iet-media-item > picture.sc-iet-media-item > img.sc-iet-media-item snippet:<img class="sc-iet-media-item sc-iet-site-header" loading="lazy" src="/media/2563/untitled-7.jpg?format=webp&amp;quality=80&amp;width=419&amp;height=83&amp;v=1d…" alt="IET logo - link to site homepage"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:4412 height:4119 left:0 right:1350 top:293 width:1350] lhId:page-7-MAIN nodeLabel:Start of main content Working to engineer a better world We inspire, inform an… path:1,HTML,1,BODY,7,MAIN selector:body.other-browser > main.row snippet:<main class="row"> type:node] score:0.043588] map[node:map[boundingRect:map[bottom:4412 height:4119 left:0 right:1350 top:293 width:1350] lhId:page-7-MAIN nodeLabel:Start of main content Working to engineer a better world We inspire, inform an… path:1,HTML,1,BODY,7,MAIN selector:body.other-browser > main.row snippet:<main class="row"> type:node] score:0.02672]]

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:50.055 source:map[column:15 line:3007 type:source-location url:https://www.theiet.org/Themes/base/js/index-faeb5270.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:34.306 source:map[type:text value:[unattributed]]] map[reflowTime:49.107 source:map[column:69 line:24 type:source-location url:https://www.theiet.org/Themes/base/js/element.service-647e64ad.js urlProvider:network]] map[reflowTime:0.948 source:map[column:72 line:54 type:source-location url:https://www.theiet.org/Themes/base/js/iet-main-navigation.entry.js urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
div.umb-block-list > iet-media-item.sc-iet-media-item > picture.sc-iet-media-item > img.sc-iet-media-item div.umb-block-list > iet-media-item.sc-iet-media-item > picture.sc-iet-media-item > img.sc-iet-media-item
/media/p2mdmbxp/web_low-angle-view-crowded-residential-to...86.8 KiB66.0 KiB
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
ietp-web-app-global-assets.azurewebsites.net/media/pfqdy5jk/weibo-icon.png23.3 KiB23.2 KiB
div.umb-block-list > iet-media-item.sc-iet-media-item > picture.sc-iet-media-item > img.sc-iet-media-item div.umb-block-list > iet-media-item.sc-iet-media-item > picture.sc-iet-media-item > img.sc-iet-media-item
/media/24nnk1mj/one-of-the-hydrogen-powered-generators.jp...47.7 KiB6.9 KiB
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
ietp-web-app-global-assets.azurewebsites.net/media/13ghi50o/wechat-icon.png6.5 KiB6.4 KiB
IET logo - link to site homepage div.umb-block-list > iet-media-item.sc-iet-media-item > picture.sc-iet-media-item > img.sc-iet-media-item
/media/2563/untitled-7.jpg?format=webp&quality=80&width=4...10.4 KiB4.8 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-5-IMG
nodeLabel: div.umb-block-list > iet-media-item.sc-iet-media-item > picture.sc-iet-media-item > img.sc-iet-media-item
path: 1,HTML,1,BODY,7,MAIN,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,IET-HOMEPAGE-BANNER,1,DIV,0,IET-MEDIA-ITEM,1,PICTURE,1,IMG
selector: div.umb-block-list > iet-media-item.sc-iet-media-item > picture.sc-iet-media-item > img.sc-iet-media-item
snippet: <img class="sc-iet-media-item sc-iet-homepage-banner" loading="lazy" src="/media/ql0ewqvb/happy-agronomist-standing-with-laptop-in-field.jpg?format=…" alt="">

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.

URLTransfer SizeDuration
www.theiet.org/Themes/base/css/styles.min.css?v=13.3.042.4 KiB120 ms
www.theiet.org/Themes/base/js/main.js?v=13.3.09.4 KiB
fonts.googleapis.com/icon?family=Material+Icons&display=swap823 B277 ms
/css2?family=Material+Symbols+Sharp:opsz,wght,FILL,GRAD@2...449 B57 ms
/p.css?s=1&k=eag8ezh&ht=tk&f=15528.15530.17252.17253&a=14...172 B210 ms
use.typekit.net/eag8ezh.css979 B208 ms

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: 874 ms
URLTime Spent
theiet.org/203 ms
www.theiet.org/670 ms
www.theiet.org/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.

ElementLayout shift score
Start of main content Working to engineer a better world We inspire, inform an… body.other-browser > main.row
0.184
Start of main content Working to engineer a better world We inspire, inform an… body.other-browser > main.row
0.044
Start of main content Working to engineer a better world We inspire, inform an… body.other-browser > main.row
0.027

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.

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

Diagnostics

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: 210 ms 124.8 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtm.js?id=GTM-N9QX7R7W149.2 KiB57.1 KiB
www.theiet.org/Themes/base/js/index-05f4331b.js37.5 KiB33.9 KiB
/32853404-389a-468c-95fb-79ebc39057ef/cc.js?renew=false&r...105.8 KiB33.8 KiB

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

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 57.8 KiB
URLTransfer SizeEst Savings
www.theiet.org/Themes/base/js/index-faeb5270.js40.7 KiB20.6 KiB
inline: (function(){function r(e,n,t){func…21.0 KiB17.5 KiB
www.theiet.org/Themes/base/js/index-05f4331b.js37.5 KiB12.5 KiB
www.theiet.org/Themes/base/js/main.js?v=13.3.09.2 KiB7.2 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: 0.0 ms 51.1 KiB
URLTransfer SizeEst Savings
www.theiet.org/Themes/base/css/styles.min.css?v=13.3.039.8 KiB38.1 KiB
.iet-global-assets .iet-purple-light-100{background-color:#9c67a8;color:#000} …14.6 KiB13.0 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.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
ietp-web-app-global-assets.azurewebsites.net/media/pfqdy5jk/weibo-icon.png
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
ietp-web-app-global-assets.azurewebsites.net/media/13ghi50o/wechat-icon.png
IET logo - link to site homepage div.umb-block-list > iet-media-item.sc-iet-media-item > picture.sc-iet-media-item > img.sc-iet-media-item
/media/2563/untitled-7.jpg?format=webp&quality=80&width=4...
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
ietp-web-app-global-assets.azurewebsites.net/media/xkxkxlst/youtube.svg
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
ietp-web-app-global-assets.azurewebsites.net/media/2zycdsf5/instagram.svg
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
ietp-web-app-global-assets.azurewebsites.net/media/tfqfqayy/linkedin.svg
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
/media/2uao1mok/iet_engx_icon_dark_background.svg
Logo div#ivcb-banner > div#ivcb-welcome > div.ivcb-logo > img

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

●Document request latency
●Optimize DOM size
●Font display
●LCP breakdown
●Optimize viewport for mobile
●Minify CSS
●Avoids enormous network payloads Total size was 1,110 KiB
●User Timing marks and measures 741 user timings
●JavaScript execution time 0.6 s
●Minimizes main-thread work 1.4 s
●Avoid long main-thread tasks 2 long tasks found
●Avoid non-composited animations 24 animated elements found
●Network Requests
●Network Round Trip Times 140 ms
●Server Backend Latencies 270 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 170 ms
○INP breakdown
90

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 roles have required attributes that describe the state of the element to screen readers. Learn more about roles and required attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Essential (344) div#ivcb-banner > div#ivcb-welcome > div#ivcb-dec-outter > label.ivcb-dec-label-necessary
Preferences (5) div#ivcb-banner > div#ivcb-welcome > div#ivcb-dec-outter > label.ivcb-dec-label-preference
Statistics (118) div#ivcb-banner > div#ivcb-welcome > div#ivcb-dec-outter > label.ivcb-dec-label-statistics
Marketing (111) div#ivcb-banner > div#ivcb-welcome > div#ivcb-dec-outter > label.ivcb-dec-label-advertising

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
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > 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.

○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]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●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
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●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.
○`[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 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
○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.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Elements with visible text labels have matching accessible names.
77

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.
/_Incapsula_Resource?SWJIYLWA=5074a744e2e3d891814e9a2dace...
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
/_Incapsula_Resource?SWJIYLWA=5074a744e2e3d891814e9a2dace...
Unload event listeners are deprecated and will be removed.
js.monitor.azure.com/scripts/b/ai.2.min.js line 4, col 20534

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
●No browser errors logged to the console
●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
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
92

SEO

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

Content Best Practices

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
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img
div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > img div.umb-block-grid__layout-container > div.umb-block-grid__layout-item > a.social-icon > 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 have descriptive text
●Links are crawlable
●robots.txt is valid
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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