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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.

60

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
client.aps.amazon-adsystem.com/publisher.js3600.0 s82.3 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
/cmoHx-7NMqx3kvsCb7fFcqWf2C8/gpt_and_prebid/config.js1100.0 s64.6 KiB
cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js86400.0 s128.4 KiB
/cohesion/cohesion-tpo.min.js?cDomain=psychcentral.com0.0 ms29.4 KiB
cdn.id5-sync.com/api/1.0/esp.js3600.0 s34.7 KiB
cdn.id5-sync.com/api/1.0/id5-api.js3600.0 s34.5 KiB
pub.doubleverify.com/dvtag/20447058/DV1208979/pub.js900.0 s30.7 KiB
secure.cdn.fastclick.net/js/pubcid/latest/pubcid.min.js900.0 s21.7 KiB
js-sec.indexww.com/ht/p/180447-192872210293780.js14400.0 s11.0 KiB
connectid.analytics.yahoo.com/connectId-gpt.js3600.0 s9.0 KiB
cdn.rvohealth.com/cohesion/ext/experimental.min.js0.0 ms4.2 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js86400.0 s8.8 KiB
/dvtp_src.js900.0 s3.8 KiB
cdn-ima.33across.com/ima.js259200.0 s6.9 KiB
prod.adspsp.com/adb.2418030p.min.js1800.0 s1.6 KiB
config.aps.amazon-adsystem.com/configs/30833600.0 s1.7 KiB
id5-sync.com/c/1151/0/8/1.gif?gdpr=0&gdpr_consent=&us_privacy=0.0 ms1.0 KiB
cdn.cookielaw.org/scripttemplates/gpp.stub.js86400.0 s2.1 KiB
assets.medicalnewstoday.com/content/advertising.js0.0 ms367 B
ad-delivery.net/px.gif?ch=1&e=0.659468861614742286400.0 s612 B
/pagead/js/r20260420/r20110914/client/window_focus_fy2021.js1209600.0 s1.6 KiB
cdn.jsdelivr.net/gh/prebid/shared-id/pubcid.js/docs/pubcid.min.js604800.0 s999 B
/favicon.ico?ad=300x250&ad_box_=1&adnet=1&showad=1&size=2...86400.0 s130 B
ad-delivery.net/px.gif?ch=286400.0 s109 B
/dvtp_src.js900.0 s0 B
config.aps.amazon-adsystem.com/configs/30833600.0 s0 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:0.117787] map[node:map[boundingRect:map[bottom:5904 height:5860 left:0 right:1350 top:44 width:1350] lhId:page-17-DIV nodeLabel:Conditions Discover Quizzes Resources SUBSCRIBE How Adults Can Help Improve the… path:1,HTML,1,BODY,4,DIV,0,DIV,2,DIV selector:body > div.__chrome > div#__next > div.css-0 snippet:<div class="css-0"> type:node] score:0.115185 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1093 height:163 left:125 right:288 top:930 width:163] lhId:page-5-IMG nodeLabel:a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv path:1,HTML,1,BODY,4,DIV,0,DIV,2,DIV,4,DIV,1,DIV,1,UL,0,LI,0,DIV,0,A,0,SPAN,0,SPAN,0,IMG selector:a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv snippet:<img loading="eager" src="//i0.wp.com/post.psychcentral.com/wp-content/uploads/sites/4/2022/04/Hummi…" alt="" class="css-nk9vlv"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:731 height:52 left:125 right:645 top:679 width:520] lhId:page-12-P nodeLabel:Black youth are facing a mental health crisis, but there are ways that adults c… path:1,HTML,1,BODY,4,DIV,0,DIV,2,DIV,4,DIV,0,DIV,0,UL,0,LI,0,DIV,2,DIV,1,P selector:li.css-3xqs2y > div.css-1ka6ts > div > p.css-o00e8u snippet:<p class="css-o00e8u"> type:node] score:0.001668 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1093 height:163 left:125 right:288 top:930 width:163] lhId:page-5-IMG nodeLabel:a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv path:1,HTML,1,BODY,4,DIV,0,DIV,2,DIV,4,DIV,1,DIV,1,UL,0,LI,0,DIV,0,A,0,SPAN,0,SPAN,0,IMG selector:a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv snippet:<img loading="eager" src="//i0.wp.com/post.psychcentral.com/wp-content/uploads/sites/4/2022/04/Hummi…" alt="" class="css-nk9vlv"> type:node]] map[cause:Web font extra:map[type:url value:https://assets.psychcentral.com/fonts/proxima/v1/32A982_9_0.woff2]] map[cause:Web font extra:map[type:url value:https://assets.psychcentral.com/fonts/tiempos/v1/TiemposHeadline-Semibold.otf]] map[cause:Web font extra:map[type:url value:https://psychcentral.com/static/fonts/healthline/healthline.woff]] map[cause:Web font extra:map[type:url value:https://assets.psychcentral.com/fonts/proxima/v1/32A982_1_0.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:1163 height:70 left:312 right:476 top:1093 width:163] lhId:page-19-DIV nodeLabel:Anxiety path:1,HTML,1,BODY,4,DIV,0,DIV,2,DIV,4,DIV,1,DIV,1,UL,1,LI,0,DIV,0,A,0,SPAN,1,DIV selector:div.css-10klw3m > a.css-6pg24m > span.css-rwmw5v > div.css-jtljv0 snippet:<div class="css-jtljv0" style="text-align: center;"> type:node] score:0.000934 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1093 height:163 left:125 right:288 top:930 width:163] lhId:page-5-IMG nodeLabel:a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv path:1,HTML,1,BODY,4,DIV,0,DIV,2,DIV,4,DIV,1,DIV,1,UL,0,LI,0,DIV,0,A,0,SPAN,0,SPAN,0,IMG selector:a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv snippet:<img loading="eager" src="//i0.wp.com/post.psychcentral.com/wp-content/uploads/sites/4/2022/04/Hummi…" alt="" class="css-nk9vlv"> type:node]]] type:subitems]]]

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:52.909 source:map[column:150460 line:3 type:source-location url:https://client.aps.amazon-adsystem.com/publisher.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:52.909 source:map[column:24129 line:2 type:source-location url:https://client.aps.amazon-adsystem.com/publisher.js urlProvider:network]] map[reflowTime:31.42 source:map[type:text value:[unattributed]]] map[reflowTime:14.02 source:map[column:75280 line:1 type:source-location url:https://assets.psychcentral.com/_next/8a797dca-e4e6-4f36-81d0-61df62ff8244/psy/lib.js urlProvider:network]] map[reflowTime:14.874 source:map[column:789261 line:1 type:source-location url:https://assets.psychcentral.com/_next/8a797dca-e4e6-4f36-81d0-61df62ff8244/psy/lib.js urlProvider:network]] map[reflowTime:3.033 source:map[column:67022 line:0 type:source-location url:https://assets.psychcentral.com/_next/8a797dca-e4e6-4f36-81d0-61df62ff8244/psy/page-widgets.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
span.css-rwmw5v > span.css-rlaxw5 > lazy-image > img.css-10vopkp span.css-rwmw5v > span.css-rlaxw5 > lazy-image > img.css-10vopkp
/wp-content/uploads/sites/4/2023/03/woman-women-lesbian-c...35.6 KiB34.2 KiB
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...37.9 KiB33.6 KiB
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...36.8 KiB32.5 KiB
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...34.7 KiB30.4 KiB
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...29.6 KiB25.3 KiB
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...28.2 KiB23.9 KiB
span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp
/wp-content/uploads/sites/4/2024/01/teenager-daughter-tal...20.7 KiB19.1 KiB
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...19.6 KiB15.3 KiB
span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp
/wp-content/uploads/sites/4/2023/12/senior-adult-man-eyeg...15.6 KiB14.4 KiB
span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp
/wp-content/uploads/sites/4/2023/09/thoughtful-man-eating...13.6 KiB12.6 KiB
span.css-rwmw5v > span.css-rlaxw5 > lazy-image > img.css-10vopkp span.css-rwmw5v > span.css-rlaxw5 > lazy-image > img.css-10vopkp
/wp-content/uploads/sites/4/2022/04/father-daughter-talki...19.8 KiB9.8 KiB
span.css-rwmw5v > span.css-rlaxw5 > lazy-image > img.css-10vopkp span.css-rwmw5v > span.css-rlaxw5 > lazy-image > img.css-10vopkp
/wp-content/uploads/sites/4/2023/12/adult-son-talking-to-...9.8 KiB9.4 KiB
span#7078802770138529078829 > div#google_image_div > a#aw0 > img.img_ad span#7078802770138529078829 > div#google_image_div > a#aw0 > img.img_ad
tpc.googlesyndication.com/simgad/439545631244586667019.3 KiB7.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-10-IMG
nodeLabel: span.css-rwmw5v > span.css-rlaxw5 > lazy-image > img.css-10vopkp
path: 1,HTML,1,BODY,4,DIV,0,DIV,2,DIV,4,DIV,0,DIV,0,UL,0,LI,0,DIV,1,FIGURE,0,A,0,DIV,0,SPAN,0,SPAN,0,LAZY-IMAGE,0,IMG
selector: span.css-rwmw5v > span.css-rlaxw5 > lazy-image > img.css-10vopkp
snippet: <img src="https://media.post.rvohealth.io/wp-content/uploads/sites/4/2022/04/father-…" alt="" class="css-10vopkp">

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.

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

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
Conditions Discover Quizzes Resources SUBSCRIBE How Adults Can Help Improve the… body > div.__chrome > div#__next > div.css-0
0.115
Black youth are facing a mental health crisis, but there are ways that adults c… li.css-3xqs2y > div.css-1ka6ts > div > p.css-o00e8u
0.002
Anxiety div.css-10klw3m > a.css-6pg24m > span.css-rwmw5v > div.css-jtljv0
0.001

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 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
Script Evaluation2.0 s
Other474 ms
Script Parsing & Compilation279 ms
Style & Layout153 ms
Garbage Collection47 ms
Rendering46 ms
Parse HTML & CSS25 ms

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 17.3 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
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...
a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv a.css-6pg24m > span.css-rwmw5v > span.css-1d2gkld > img.css-nk9vlv
/post.psychcentral.com/wp-content/uploads/sites/4/2022/04...
span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp
/wp-content/uploads/sites/4/2024/01/teenager-daughter-tal...
span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp
/wp-content/uploads/sites/4/2023/12/senior-adult-man-eyeg...
span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp span.css-rlaxw5 > lazy-image > picture.css-129gw94 > img.css-10vopkp
/wp-content/uploads/sites/4/2023/09/thoughtful-man-eating...

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
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
User Timing marks and measures 22 user timings
Avoid long main-thread tasks 11 long tasks found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 90 ms
Server Backend Latencies 280 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Avoid multiple page redirects
Initial server response time was short Root document took 260 ms
INP breakdown
Avoid non-composited animations
96

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
LISTEN NOW div.css-8pdhly > button.css-1huk07p > span.css-14ktbsh > span.css-whh5e5

These are opportunities to improve the legibility of your content.

Best practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These items highlight common accessibility best practices.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
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
`[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
Elements use only permitted ARIA attributes
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 are distinguishable without relying on color.
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.
Heading elements appear in a sequentially-descending order
Deprecated ARIA roles were not used
Identical links have the same purpose.
Elements with visible text labels have matching accessible names.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<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
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.
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
Topics
SharedStorage

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
Failed to load resource: the server responded with a status of 400 ()

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.

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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 clickjacking with XFO or CSP
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Redirects HTTP traffic to HTTPS
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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