Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
static.shareasale.com/image/108816/US00336_28000_00.jpg	3059.0 s	104.2 KiB
connect.facebook.net/en_US/bundle/sdk.js/	1200.0 s	77.8 KiB
static.shareasale.com/image/128967/300X6001_01.jpg	1349.0 s	77.3 KiB
/banners/42da6dad-ff6a-442b-b548-cdd009d10150.png?updated...	0.0 ms	57.5 KiB
/signals/config/1020645035249848?v=2.9.303&r=stable&domai...	1200.0 s	44.7 KiB
/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy...	1209600.0 s	177.5 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...	14400.0 s	13.5 KiB
connect.facebook.net/en_US/sdk.js	1200.0 s	5.0 KiB
/k0oo4sEbyaUNNBiNnebIOhdodt2ldUyec1mG1ba5WK4B4Kc_J1GAOqow...	86400.0 s	5.4 KiB
im-cleantechnica.disqus.com/count.js	300.0 s	1.5 KiB
/count-data.js?1=371175%20https%3A%2F%2Fcleantechnica.com...	600.0 s	1.5 KiB
/link.php?merchant_link_id=42da6dad-ff6a-442b-b548-cdd009...	0.0 ms	398 B
/tr/?id=1020645035249848&ev=PageView&dl=https%3A%2F%2Fcle...	0.0 ms	16 B

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/wp-content/themes/colormag-pro/assets/fonts/OpenSans-Sem...	55 ms
/wp-content/themes/colormag-pro/assets/fonts/OpenSans-Med...	45 ms
/wp-content/themes/colormag-pro/assets/fonts/OpenSans-Sem...	45 ms
/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu...	40 ms
/wp-content/themes/colormag-pro/assets/fonts/OpenSans-Ita...	35 ms
/wp-content/themes/colormag-pro/assets/fonts/OpenSans-Var...	20 ms
/wp-content/themes/colormag-pro/assets/library/fontawesom...	20 ms
cleantechnica.com/wp-content/themes/colormag-pro/assets/fonts/OpenSans-Bold.woff	15 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
Ursa Ag tractor `article#post-371597 > div.cm-featured-image > a > img.attachment-colormag-featured-image`	cleantechnica.com/wp-content/uploads/2026/04/Ursa-Ag-tractor-768x427.png	312.9 KiB	275.4 KiB
	cleantechnica.com/wp-content/uploads/2023/11/solar3.jpg	432.5 KiB	254.8 KiB
article#post-371582 > div.cm-featured-image > a > img.attachment-colormag-featured-image `article#post-371582 > div.cm-featured-image > a > img.attachment-colormag-featured-image`	/wp-content/uploads/2026/04/Simple-Ultra-electric-scooter...	275.6 KiB	238.1 KiB
article#post-371386 > div.cm-featured-image > a > img.attachment-colormag-featured-image `article#post-371386 > div.cm-featured-image > a > img.attachment-colormag-featured-image`	/wp-content/uploads/2026/04/2026-03-China-March-EV-Sales-...	259.3 KiB	221.8 KiB
article#post-371619 > div.cm-featured-image > a > img.attachment-colormag-featured-image `article#post-371619 > div.cm-featured-image > a > img.attachment-colormag-featured-image`	cleantechnica.com/wp-content/uploads/2026/04/Navotas_Mayor-800x445.png	176.5 KiB	139.0 KiB
article#post-371620 > div.cm-featured-image > a > img.attachment-colormag-featured-image `article#post-371620 > div.cm-featured-image > a > img.attachment-colormag-featured-image`	cleantechnica.com/wp-content/uploads/2026/04/PV-EV-Heat-Pumps-2-800x445.png	86.3 KiB	48.8 KiB
article#post-371175 > div.cm-featured-image > a > img.attachment-colormag-featured-image `article#post-371175 > div.cm-featured-image > a > img.attachment-colormag-featured-image`	/wp-content/uploads/2026/04/Battery-Electric-Recumbent-Bi...	68.9 KiB	31.5 KiB
CleanTechnica `div.cm-header-col-1 > div#cm-site-branding > a.custom-logo-link > img.custom-logo`	cleantechnica.com/wp-content/uploads/2023/06/CleanTechnica_logo_crop.webp	7.6 KiB	4.2 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-0-IMG

nodeLabel: Ursa Ag tractor

path: 1,HTML,1,BODY,0,DIV,3,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,0,DIV,0,A,0,IMG

selector: article#post-371597 > div.cm-featured-image > a > img.attachment-colormag-featured-image

snippet: <img width="800" height="445" src="https://cleantechnica.com/wp-content/uploads/2026/04/Ursa-Ag-tractor-768x4…" class="attachment-colormag-featured-image size-colormag-featured-image wp-post-im…" alt="Ursa Ag tractor" decoding="async" srcset="https://cleantechnica.com/wp-content/uploads/2026/04/Ursa-Ag-tractor-800x4…" sizes="(max-width: 800px) 100vw, 800px">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
cleantechnica.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	30.9 KiB	150 ms
/wp-content/themes/colormag-pro/assets/library/fontawesom...	6.9 KiB
cleantechnica.com/wp-content/themes/colormag-pro/style.css?ver=4.1.2	24.0 KiB	300 ms
cleantechnica.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1	5.0 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

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 150 ms 4.8 KiB

URL	Transfer Size	Est Savings
cleantechnica.com/wp-content/themes/colormag-pro/style.css?ver=4.1.2	24.0 KiB	4.8 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: 150 ms 35.6 KiB

URL	Transfer Size	Est Savings
cleantechnica.com/wp-content/themes/colormag-pro/style.css?ver=4.1.2	23.9 KiB	21.7 KiB
.fc-consent-root .fc-dialog-container.fc-fullscreen { height: 100% !important; … } …	16.2 KiB	13.9 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 450 ms 685.3 KiB

URL	Transfer Size	Est Savings
/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy...	177.5 KiB	147.9 KiB
www.googletagmanager.com/gtag/js?id=UA-18444479-1&cx=c&gtm=4e64k0	115.5 KiB	90.0 KiB
www.googletagmanager.com/gtag/js?id=UA-18444479-1	115.5 KiB	65.4 KiB
www.googletagmanager.com/gtag/js?id=G-BRWNS0TK1P	155.6 KiB	64.7 KiB
connect.facebook.net/en_US/bundle/sdk.js/	77.7 KiB	55.0 KiB
/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842	55.0 KiB	42.7 KiB
/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842	55.0 KiB	42.7 KiB
/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842	55.0 KiB	42.7 KiB
/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842	55.0 KiB	42.7 KiB
/i/ca-pub-1552008901061842?href=https%3A%2F%2Fcleantechni...	68.7 KiB	36.0 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	33.8 KiB
/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842	55.0 KiB	21.6 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
cleantechnica.com/	710 ms	59 ms	8.2 ms
Unattributable	410 ms	36 ms	0.0 ms
/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842	323 ms	147 ms	129 ms
www.googletagmanager.com/gtag/js?id=G-BRWNS0TK1P	323 ms	265 ms	46 ms
/f/AGSKWxWiFy_wyQAJCX8Z1f29af52LhvFl70U_isvU-3ggGlaot1yue...	267 ms	137 ms	38 ms
cleantechnica.com/cdn-cgi/challenge-platform/scripts/jsd/main.js	263 ms	252 ms	2.3 ms
/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy...	235 ms	166 ms	65 ms
connect.facebook.net/en_US/fbevents.js	228 ms	175 ms	52 ms
cleantechnica.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	185 ms	140 ms	6.7 ms
/i/ca-pub-1552008901061842?href=https%3A%2F%2Fcleantechni...	183 ms	164 ms	17 ms
/signals/config/1020645035249848?v=2.9.303&r=stable&domai...	134 ms	118 ms	16 ms
www.googletagmanager.com/gtag/js?id=UA-18444479-1	114 ms	81 ms	33 ms
connect.facebook.net/en_US/bundle/sdk.js/	80 ms	52 ms	27 ms
confesschairs.com/v2qoycyVNOHcqUvZO_xctPH0sjirBP1wb2TOYybwATibQ8Csme6eBe0U	70 ms	54 ms	12 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	2.0 s
Other	514 ms
Style & Layout	505 ms
Script Parsing & Compilation	498 ms
Parse HTML & CSS	122 ms
Rendering	111 ms
Garbage Collection	25 ms

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
cleantechnica.com/wp-content/uploads/2023/11/solar3.jpg	432.9 KiB
cleantechnica.com/wp-content/uploads/2023/08/CT-Spreadshirt-ad-v3.webp	341.6 KiB
cleantechnica.com/wp-content/uploads/2026/04/Ursa-Ag-tractor-768x427.png	313.2 KiB
/wp-content/uploads/2026/04/Simple-Ultra-electric-scooter...	275.9 KiB
/wp-content/uploads/2026/04/2026-03-China-March-EV-Sales-...	259.6 KiB
/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy...	177.5 KiB
cleantechnica.com/wp-content/uploads/2026/04/Navotas_Mayor-800x445.png	176.8 KiB
www.googletagmanager.com/gtag/js?id=G-BRWNS0TK1P	155.9 KiB
www.googletagmanager.com/gtag/js?id=UA-18444479-1&cx=c&gtm=4e64k0	115.6 KiB
www.googletagmanager.com/gtag/js?id=UA-18444479-1	115.6 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
aside#block-37 > center > a > img `aside#block-37 > center > a > img`	cleantechnica.com/wp-content/uploads/2023/08/CT-Spreadshirt-ad-v3.webp
Earth Day Sale - Up To 58% OFF `aside#custom_html-42 > div.textwidget > a > img`	static.shareasale.com/image/108816/US00336_28000_00.jpg

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

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify JavaScript

●User Timing marks and measures 5 user timings

●Avoid long main-thread tasks 15 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 100 ms

●Server Backend Latencies 330 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 130 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○Avoid non-composited animations

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
nav#cm-primary-nav > div.cm-container > div.cm-row > p.cm-menu-toggle `nav#cm-primary-nav > div.cm-container > div.cm-row > p.cm-menu-toggle`

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.

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
Can Your Fridge Survive an Outage? See what CleanTechnica says. `center > span > font > a`
Can Your Fridge Survive an Outage? `span > font > a > strong`
CleanTechnica `span > font > a > em`
Support independent cleantech journalism by donating directly to CleanTechnica! `a > strong > span > font`
CleanTechnica `strong > span > font > em`
ADVERTISEMENTS `div#cm-secondary > aside#block-14 > div.block-title > h3.wp-block-heading`
Advertise with CleanTechnica to get your company in front of millions of monthl… `a > strong > span > font`
CleanTechnica `strong > span > font > em`
CleanTechnica TV `div#cm-secondary > aside#block-53 > div.block-title > h3.wp-block-heading`
ADVERTISEMENT `div#cm-secondary > aside#custom_html-42 > h3.cm-widget-title > span`
CleanTechnica Podcasts `div#cm-secondary > aside#block-31 > div.block-title > h3.wp-block-heading`
ADVERTISEMENTS `div#cm-secondary > aside#custom_html-37 > h3.cm-widget-title > span`
NEW! Newswire Corner! `div#cm-secondary > aside#block-56 > div.block-title > h3.wp-block-heading`
CleanTechnica Newsletter `div#cm-secondary > aside#block-50 > div.block-title > h3.wp-block-heading`
SHOP CLEANTECHNICA `div#cm-secondary > aside#block-38 > div.block-title > h3.wp-block-heading`
ADVERTISEMENT `div#cm-secondary > aside#custom_html-43 > h3.cm-widget-title > span`
The content produced by this site is for entertainment purposes only. Opinions … `div.cm-row > div.cm-footer-bar-area > div.cm-footer-bar__2 > font`
CleanTechnica `div.cm-footer-bar-area > div.cm-footer-bar__2 > font > em`
CleanTechnica `div.cm-footer-bar-area > div.cm-footer-bar__2 > font > em`
Learn more `div.fc-dialog-content > div.fc-dialog-scrollable-content > button.fc-faq-header > span.fc-faq-label`
List of partners. `div.fc-dialog-scrollable-content > div.fc-footer > p > a.fc-vendors-list-dialog`
Manage options `div.fc-dialog > div.fc-footer-buttons-container > button.fc-button > p.fc-manage-options-third-button-label`

These are opportunities to improve the legibility of your content.

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.textwidget > center > a > img `div.textwidget > center > a > img`
aside#block-37 > center > a > img `aside#block-37 > center > a > img`

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.nav-links > ul.page-numbers > li > a.next `div.nav-links > ul.page-numbers > li > a.next`
div.cm-row > div#cm-secondary > aside#block-58 > a `div.cm-row > div#cm-secondary > aside#block-58 > a`
div.cm-row > div#cm-secondary > aside#block-47 > a `div.cm-row > div#cm-secondary > aside#block-47 > a`
div.cm-row > div#cm-secondary > aside#block-52 > a `div.cm-row > div#cm-secondary > aside#block-52 > a`
div.cm-row > div#cm-secondary > aside#block-35 > a `div.cm-row > div#cm-secondary > aside#block-35 > a`
aside#custom_html-37 > div.textwidget > center > a `aside#custom_html-37 > div.textwidget > center > a`
div.cm-row > div#cm-secondary > aside#block-57 > a `div.cm-row > div#cm-secondary > aside#block-57 > a`
div.cm-row > div#cm-secondary > aside#block-49 > a `div.cm-row > div#cm-secondary > aside#block-49 > a`
div#cm-secondary > aside#block-37 > center > a `div#cm-secondary > aside#block-37 > center > a`
aside#custom_html-43 > div.textwidget > center > a `aside#custom_html-43 > div.textwidget > center > a`
div.social-links > ul > li > a `div.social-links > ul > li > a`
div.social-links > ul > li > a `div.social-links > ul > li > a`
div.social-links > ul > li > a `div.social-links > ul > li > a`
div.social-links > ul > li > a `div.social-links > ul > li > a`
div.social-links > ul > li > a `div.social-links > ul > li > a`

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

○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-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

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

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

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

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

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

●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

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Uses ARIA roles only on compatible elements

●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

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○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.

○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.

Best Practices

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
SharedStorage	cleantechnica.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	cleantechnica.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	cleantechnica.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
AttributionReporting	connect.facebook.net/en_US/fbevents.js line 279, col 769
Specifying overflow: visible on img, video and canvas tags may cause them to produce visual content outside of the element bounds. See https://github.com/WICG/shared-element-transitions/blob/main/debugging_overflow_on_images.md.	/_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads... line 19, col 449

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source Description

Source	Description
connect.facebook.net/en_US/bundle/sdk.js/ line 95, col 891	`t`
/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842 line 161, col 323	TagError: adsbygoogle.push() error: No slot size for availableWidth=0 at Ro (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:162:324) at Qo (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:161:146) at Yo (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:165:172) at fp (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:181:15) at hp (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:182:342) at ur (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:231:66) at g.client (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:221:47) at Xj.g (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:79:555) at ek (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:80:706) at pr (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:221:35)

connect.facebook.net/en_US/bundle/sdk.js/ line 95, col 891

t

/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842 line 161, col 323

TagError: adsbygoogle.push() error: No slot size for availableWidth=0
    at Ro (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:162:324)
    at Qo (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:161:146)
    at Yo (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:165:172)
    at fp (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:181:15)
    at hp (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:182:342)
    at ur (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:231:66)
    at g.client (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:221:47)
    at Xj.g (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:79:555)
    at ek (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:80:706)
    at pr (https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1552008901061842:221:35)

●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

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

SEO

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

Content Best Practices

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.textwidget > center > a > img `div.textwidget > center > a > img`
aside#block-37 > center > a > img `aside#block-37 > center > a > 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`