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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

54

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
/wp-content/uploads/2026/03/Math-Series-Hub-Lede-Animated...0.0 ms3.1 MiB
www.quantamagazine.org/wp-content/uploads/2026/02/SixMathEssentials-Ad-HP.jpg0.0 ms282.1 KiB
/wp-content/uploads/2026/04/Dirt-race-cr-Max-Levy-Default...0.0 ms274.3 KiB
/wp-content/uploads/2026/04/Our-Bacterial-Immunity-cr-Mag...0.0 ms235.0 KiB
/wp-content/uploads/2026/04/Quantum-Jamming-cr-Samuel-Vel...0.0 ms212.7 KiB
/wp-content/uploads/2026/04/Aihorrorstories_cr-Zara-Picke...0.0 ms208.4 KiB
/wp-content/uploads/2026/02/Infinity-Explainer-cr-Mark-Be...0.0 ms207.9 KiB
/wp-content/uploads/2026/04/MiniBooNE-photomultiplier-tub...0.0 ms172.7 KiB
/wp-content/uploads/2026/04/Math-AI-Update-cr-Nash-Weeras...0.0 ms167.4 KiB
/wp-content/uploads/2026/04/FlagellarMotors-crKristinaArm...0.0 ms136.3 KiB
/wp-content/uploads/2025/12/Year-in-review-2025-Biology-c...0.0 ms75.0 KiB
/wp-content/uploads/2025/12/Year-in-review-2025-Physics-c...0.0 ms73.2 KiB
/wp-content/uploads/2026/04/QR-Knots-cr-Dror-Bar-Natan_Ro...0.0 ms71.4 KiB
/wp-content/uploads/2025/12/Year-in-review-2025-Mathemati...0.0 ms69.6 KiB
/wp-content/uploads/2025/08/JOW-Ep12-Thumbnail-NO-LOGO.webp0.0 ms64.3 KiB
/wp-content/uploads/2025/12/Year-in-review-2025-Computer-...0.0 ms61.6 KiB
/wp-content/uploads/2026/02/SixMathEssentials-Ad-Mobile.jpg0.0 ms52.8 KiB
/wp-content/themes/quanta2024/frontend/dist/main.min.js?v...0.0 ms47.3 KiB
www.quantamagazine.org/wp-content/uploads/2020/05/Lisa-Piccirillo_300.jpg0.0 ms45.6 KiB
www.quantamagazine.org/wp-content/uploads/2020/06/Invariants_300.jpg0.0 ms40.8 KiB
www.quantamagazine.org/wp-content/uploads/2050/03/Ribbon_Concordance_300.jpg0.0 ms37.3 KiB
/wp-content/themes/quanta2024/frontend/dist/main.min.css?...0.0 ms36.3 KiB
www.quantamagazine.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.10.0 ms29.8 KiB
/wp-content/themes/quanta2024/frontend/fonts/noe-display-...0.0 ms28.1 KiB
/wp-content/uploads/2026/02/SixMathEssentials-Ad-Newslett...0.0 ms28.1 KiB
/wp-content/uploads/2026/03/Math-Series-Hub-Lede-Animated...0.0 ms25.1 KiB
/wp-content/themes/quanta2024/frontend/fonts/pangram-regu...0.0 ms21.4 KiB
/wp-content/themes/quanta2024/frontend/fonts/pangram-bold...0.0 ms21.4 KiB
/wp-content/themes/quanta2024/frontend/fonts/pangram-extr...0.0 ms21.3 KiB
/wp-content/themes/quanta2024/frontend/fonts/pangram-medi...0.0 ms21.3 KiB
/wp-content/themes/quanta2024/frontend/js/mathjax/MathJax.js0.0 ms18.7 KiB
www.quantamagazine.org/wp-content/uploads/2013/07/HP_1000x710_02-768x545.jpg0.0 ms15.6 KiB
/wp-includes/css/dist/block-library/style.min.css?ver=6.6.20.0 ms14.7 KiB
/wp-content/themes/quanta2024/frontend/js/mathjax/extensi...0.0 ms11.6 KiB
scripts.clarity.ms/0.8.59/clarity.js86400.0 s26.2 KiB
/wp-content/plugins/quanta-education-interactive/jquery.v...0.0 ms7.4 KiB
/wp-content/themes/quanta2024/frontend/images/image-place...0.0 ms7.2 KiB
www.quantamagazine.org/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.10.0 ms5.0 KiB
/wp-content/plugins/quanta-favorites/assets/js/favorites....0.0 ms4.1 KiB
/wp-content/themes/quanta2024/frontend/js/mathjax/extensi...0.0 ms3.2 KiB
/wp-content/plugins/quanta-favorites/assets/css/favorites...0.0 ms3.2 KiB
/wp-content/themes/quanta2024/frontend/js/mathjax/extensi...0.0 ms2.7 KiB
/wp-content/themes/quanta2024/frontend/js/mathjax/jax/out...0.0 ms1.8 KiB
quanta-mag.disqus.com/count.js300.0 s1.5 KiB
/count-data.js?1=159206%20https%3A%2F%2Fwww.quantamagazin...600.0 s1.5 KiB
/wp-content/plugins/sf-privacy-consent/js/front.min.js?ve...0.0 ms1.3 KiB
/wp-content/plugins/disqus-comment-system/public/js/comme...0.0 ms847 B
/wp-content/themes/quanta2024/frontend/js/mathjax/jax/inp...0.0 ms803 B
/count-data.js?1=161167%20https%3A%2F%2Fwww.quantamagazin...600.0 s839 B
/wp-content/plugins/quanta-education-interactive/edin.js?...0.0 ms686 B
/wp-content/plugins/disqus-comment-system/public/js/comme...0.0 ms550 B
www.quantamagazine.org/wp-content/themes/quanta2024/frontend/css/fonts.css0.0 ms489 B
cdn-cookieyes.com/assets/images/close.svg36000.0 s858 B
/wp-content/plugins/sf-privacy-consent/css/front.min.css?...0.0 ms434 B
/wp-content/uploads/2026/03/Math-Series-Hub-Lede-Animated...0.0 ms0 B
/wp-content/uploads/2026/03/Math-Series-Hub-Lede-Animated...0.0 ms0 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.

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
a > div.image > div.image__inner > video.absolute a > div.image > div.image__inner > video.absolute
/wp-content/uploads/2026/03/Math-Series-Hub-Lede-Animated...3.1 MiB3.0 MiB
Three researchers crowd around as a steel tube is hammered into the ground. a.relative > div.image > div.image__inner > img.absolute
/wp-content/uploads/2026/04/Dirt-race-cr-Max-Levy-Default...273.9 KiB265.8 KiB
An illustration shows a knight kneeling behind a shield engraved with an image … a.relative > div.image > div.image__inner > img.absolute
/wp-content/uploads/2026/04/Our-Bacterial-Immunity-cr-Mag...234.7 KiB226.6 KiB
a.relative > div.image > div.image__inner > img.absolute a.relative > div.image > div.image__inner > img.absolute
/wp-content/uploads/2026/04/Quantum-Jamming-cr-Samuel-Vel...212.3 KiB204.3 KiB
a.relative > div.image > div.image__inner > img.absolute a.relative > div.image > div.image__inner > img.absolute
/wp-content/uploads/2026/04/Aihorrorstories_cr-Zara-Picke...208.1 KiB200.0 KiB
a.relative > div.image > div.image__inner > img.absolute a.relative > div.image > div.image__inner > img.absolute
/wp-content/uploads/2026/02/Infinity-Explainer-cr-Mark-Be...207.5 KiB182.8 KiB
A metallic photomultiplier tube that looks like a large light bulb. a.relative > div.image > div.image__inner > img.absolute
/wp-content/uploads/2026/04/MiniBooNE-photomultiplier-tub...172.4 KiB164.3 KiB
a.relative > div.image > div.image__inner > img.absolute a.relative > div.image > div.image__inner > img.absolute
/wp-content/uploads/2026/04/Math-AI-Update-cr-Nash-Weeras...167.1 KiB159.0 KiB
A collage illustration depicting a model of the proteins in a flagellar motor, … a.relative > div.image > div.image__inner > img.absolute
/wp-content/uploads/2026/04/FlagellarMotors-crKristinaArm...136.0 KiB127.9 KiB
Two cranes symmetrically poised with their beaks together below a full moon div.card-list__image > div.image > div.image__inner > img.absolute
/wp-content/uploads/2025/08/JOW-Ep12-Thumbnail-NO-LOGO.webp64.1 KiB60.7 KiB
A Quanta Books ad displaying the book "Six Math Essentials" by Terry Tao div.home__poster-sidebar > div.home__poster-sidebar__img > a.__mobile > img.fill-h
/wp-content/uploads/2026/02/SixMathEssentials-Ad-Mobile.jpg52.7 KiB44.5 KiB
a.card-list__image > div.image > div.image__inner > img.absolute a.card-list__image > div.image > div.image__inner > img.absolute
www.quantamagazine.org/wp-content/uploads/2020/05/Lisa-Piccirillo_300.jpg45.5 KiB42.1 KiB
An illustration of a knot that mathematicians might study using tools called in… a.card-list__image > div.image > div.image__inner > img.absolute
www.quantamagazine.org/wp-content/uploads/2020/06/Invariants_300.jpg40.6 KiB37.3 KiB
div.video__cover > div.image > div.image__inner > img.absolute div.video__cover > div.image > div.image__inner > img.absolute
/wp-content/uploads/2025/12/Year-in-review-2025-Biology-c...74.8 KiB36.0 KiB
a.card-list__image > div.image > div.image__inner > img.absolute a.card-list__image > div.image > div.image__inner > img.absolute
www.quantamagazine.org/wp-content/uploads/2050/03/Ribbon_Concordance_300.jpg37.2 KiB33.8 KiB
div.relative > div.image > div.image__inner > img.absolute div.relative > div.image > div.image__inner > img.absolute
/wp-content/uploads/2026/04/QR-Knots-cr-Dror-Bar-Natan_Ro...71.2 KiB31.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/wp-content/themes/quanta2024/frontend/dist/main.min.css?...36.3 KiB605 ms
/wp-includes/css/dist/block-library/style.min.css?ver=6.6.214.7 KiB
www.quantamagazine.org/wp-content/themes/quanta2024/frontend/css/fonts.css489 B
/wp-content/plugins/sf-privacy-consent/css/front.min.css?...434 B
/wp-content/plugins/quanta-favorites/assets/css/favorites...3.2 KiB
fonts.googleapis.com/css?family=Merriweather:300,300i,400,400i,700,700i1.3 KiB820 ms
cdn-cookieyes.com/client_data/391b7abb1290e8e114fb4d75/script.js9.0 KiB765 ms

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.

URLEst Savings
/s/merriweather/v33/u-4e0qyriQwlOrhSvowK_l5UcA6zuSYEqOzpP...20 ms
/wp-content/themes/quanta2024/frontend/fonts/pangram-medi...20 ms
/s/merriweather/v33/u-4c0qyriQwlOrhSvowK_l5-eTxCVx0ZbwLvK...15 ms
/wp-content/themes/quanta2024/frontend/fonts/pangram-extr...15 ms
/wp-content/themes/quanta2024/frontend/fonts/pangram-regu...15 ms
/wp-content/themes/quanta2024/frontend/fonts/pangram-bold...10 ms
/wp-content/themes/quanta2024/frontend/fonts/noe-display-...10 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: 1.1 s
URLTime Spent
quantamagazine.org/1.1 s
www.quantamagazine.org/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 300 ms 44.5 KiB
URLTransfer SizeEst Savings
/wp-content/themes/quanta2024/frontend/dist/main.min.css?...36.2 KiB30.0 KiB
/wp-includes/css/dist/block-library/style.min.css?ver=6.6.214.5 KiB14.5 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.

URLTotal CPU TimeScript EvaluationScript Parse
www.quantamagazine.org/1.3 s52 ms12 ms
Unattributable922 ms29 ms0.0 ms
www.googletagmanager.com/gtag/js?id=G-6SNESLGK16&cx=c&gtm=4e64k0h1358 ms278 ms77 ms
www.googletagmanager.com/gtm.js?id=GTM-KZGMXJ7290 ms205 ms49 ms
scripts.clarity.ms/0.8.59/clarity.js286 ms236 ms10 ms
cdn-cookieyes.com/client_data/391b7abb1290e8e114fb4d75/script.js185 ms165 ms10 ms
www.quantamagazine.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1166 ms129 ms11 ms
cdn-cookieyes.com/client_data/391b7abb1290e8e114fb4d75/banner.js105 ms79 ms4.0 ms
/wp-content/themes/quanta2024/frontend/dist/main.min.js?v...97 ms75 ms18 ms
/wp-content/themes/quanta2024/frontend/js/mathjax/MathJax.js82 ms69 ms8.2 ms
/wp-content/themes/quanta2024/frontend/js/mathjax/jax/out...63 ms58 ms0.7 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.

CategoryTime Spent
Script Evaluation1.8 s
Other1.2 s
Style & Layout693 ms
Rendering250 ms
Script Parsing & Compilation223 ms
Parse HTML & CSS136 ms
Garbage Collection65 ms

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: 0.0 ms 163.6 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-6SNESLGK16&cx=c&gtm=4e64k0h1171.8 KiB68.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-KZGMXJ7132.0 KiB61.5 KiB
/wp-content/themes/quanta2024/frontend/dist/main.min.js?v...47.2 KiB33.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
/wp-content/uploads/2026/03/Math-Series-Hub-Lede-Animated...12.9 MiB
/wp-content/uploads/2026/03/Math-Series-Hub-Lede-Animated...3.1 MiB
www.quantamagazine.org/wp-content/uploads/2026/02/SixMathEssentials-Ad-HP.jpg282.1 KiB
/wp-content/uploads/2026/04/Dirt-race-cr-Max-Levy-Default...274.3 KiB
/wp-content/uploads/2026/04/Our-Bacterial-Immunity-cr-Mag...235.0 KiB
/wp-content/uploads/2026/04/Quantum-Jamming-cr-Samuel-Vel...212.7 KiB
/wp-content/uploads/2026/04/Aihorrorstories_cr-Zara-Picke...208.4 KiB
/wp-content/uploads/2026/02/Infinity-Explainer-cr-Mark-Be...207.9 KiB
/wp-content/uploads/2026/04/MiniBooNE-photomultiplier-tub...172.7 KiB
www.googletagmanager.com/gtag/js?id=G-6SNESLGK16&cx=c&gtm=4e64k0h1171.9 KiB

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

●Layout shift culprits
●Optimize DOM size
●Forced reflow
●LCP breakdown
●LCP request discovery
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 5 user timings
●Avoid long main-thread tasks 15 long tasks found
●Avoid non-composited animations 8 animated elements found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 120 ms
●Server Backend Latencies 390 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 30 ms
○INP breakdown
○Avoid large layout shifts
86

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
+1 author div.hero__card__inner > div.mb05 > div.byline > span.text-gray-767
+1 author div.card__content > div.card__meta > div.byline > span.text-gray-767

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

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.flex > div.podcast__progress > div.flex-items-center > input div.flex > div.podcast__progress > div.flex-items-center > input
div.flex > div.podcast__progress > div.flex-items-center > input div.flex > div.podcast__progress > div.flex-items-center > input

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
body.home > main > section.hero--home > a body.home > main > section.hero--home > a
aside.cws__sidebar > div.cws__social > div.social-links > a.social-links__link aside.cws__sidebar > div.cws__social > div.social-links > a.social-links__link
aside.cws__sidebar > div.cws__social > div.social-links > a.social-links__link aside.cws__sidebar > div.cws__social > div.social-links > a.social-links__link
div.card__podcast > div.podcast > div.flex > a.download-icon div.card__podcast > div.podcast > div.flex > a.download-icon
body.home > main > section.hero--middle > a body.home > main > section.hero--middle > a
div.mb05 > div.h6 > div.comments-button > a.flex div.mb05 > div.h6 > div.comments-button > a.flex
div.h6 > div.comments-button > div.comments-button > a.flex div.h6 > div.comments-button > div.comments-button > a.flex
div.card__podcast > div.podcast > div.flex > a.download-icon div.card__podcast > div.podcast > div.flex > a.download-icon
div.flex > div.fill-h > div.card-list > a.card-list__image div.flex > div.fill-h > div.card-list > a.card-list__image
div.flex > div.fill-h > div.card-list > a.card-list__image div.flex > div.fill-h > div.card-list > a.card-list__image
section.outer > div.footer__social > div.social-links > a.social-links__link section.outer > div.footer__social > div.social-links > a.social-links__link
section.outer > div.footer__social > div.social-links > a.social-links__link section.outer > div.footer__social > div.social-links > a.social-links__link

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
●Image elements have `[alt]` attributes
●`[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 are distinguishable without relying on color.
●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
●ARIA IDs are unique
●No form fields have multiple labels
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●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 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
○`<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
○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
○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.
96

Best Practices

General

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
/wp-content/plugins/disqus-comment-system/public/js/comme... line 37, col 16
Could not find 'disqus_thread' container to load DISQUS. This is usually the result of a WordPress theme conflicting with the DISQUS plugin. Try switching your site to a Classic Theme, or contact DISQUS support for help.
/wp-content/themes/quanta2024/frontend/dist/main.min.js?v... line 5, col 23859
TypeError: (0 , pt.default)(...).validate is not a function at Wo (https://www.quantamagazine.org/wp-content/themes/quanta2024/frontend/dist/main.min.js?ver=1775583826:6:23860) at https://www.quantamagazine.org/wp-content/themes/quanta2024/frontend/dist/main.min.js?ver=1775583826:6:56292 at https://www.quantamagazine.org/wp-content/themes/quanta2024/frontend/dist/main.min.js?ver=1775583826:6:56298 at https://www.quantamagazine.org/wp-content/themes/quanta2024/frontend/dist/main.min.js?ver=1775583826:6:56309
●Uses HTTPS
●Avoids deprecated APIs
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
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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