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
/assets/images/cads/butyrate-immune-system-hot-topic-mobi...	86400.0 s	241.7 KiB
/assets/images/cads/butyrate-immune-system-hot-topic-desk...	86400.0 s	140.5 KiB
media.mercola.com/assets/images/cads/earth-day-sitewide-042126-cs-mobile.jpg	86400.0 s	44.5 KiB
scripts.clarity.ms/0.8.59/clarity.js	86400.0 s	26.2 KiB
www.mercola.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?	14400.0 s	13.4 KiB
/assets/js/comserver/mercolascript.js?v=20260422&_=177688...	604800.0 s	39.7 KiB
/assets/js/comserver/mercolalibrary.js?v=20260422&_=17768...	604800.0 s	36.0 KiB
www.mercola.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js	2873.0 s	4.2 KiB
media.mercola.com/assets/js/seosubscriptionbox.js?v=20260422	604800.0 s	8.2 KiB
media.mercola.com/assets/js/comserver/mercolapagespeed.js?v=20260422	604800.0 s	6.0 KiB

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.

	URL	Resource Size	Est Savings
My goal is to empower you to Take Control of Your Health by providing trustw… `div.max-width > div.content-wrapper > a > div.mediasection-gamechanger-new`	media.mercola.com/assets/images/mercola/media-new-bg.png	765.9 KiB	638.2 KiB
Butyrate's Impact on Your Immune System `a > div.columns > div.article-img > img.mobile`	/assets/images/cads/butyrate-immune-system-hot-topic-mobi...	237.2 KiB	221.7 KiB
dr mercola `a > div.mediasection-gamechanger-new > div.mediasection-gamechanger-new-content > img.dr-mercola-media-mobile-img`	media.mercola.com/assets/images/mercola/dr-mercola-mobile.png	125.3 KiB	116.9 KiB
Butyrate's Impact on Your Immune System `a > div.columns > div.article-img > img.desktop`	/assets/images/cads/butyrate-immune-system-hot-topic-desk...	136.0 KiB	112.7 KiB
anger management techniques `div.columns > a > div.article-img > img.mlazyloaded`	/ImageServer/Public/2026/April/lead/anger-management-tech...	38.6 KiB	37.5 KiB
frequent urination underlying health conditions `a > div.article-post > div.article-img > img.mlazyloaded`	/ImageServer/Public/2026/April/lead/frequent-urination-un...	37.4 KiB	36.3 KiB
Get 20% Off Sitewide on Earth Day `div.promo-banner > div.top-banner > a > img.mobile-image`	media.mercola.com/assets/images/cads/earth-day-sitewide-042126-cs-mobile.jpg	40.0 KiB	33.0 KiB
hidden fat visceral liver bmi heart health `div.columns > a > div.article-img > img.ls-is-cached`	/ImageServer/Public/2026/April/lead/hidden-fat-visceral-l...	28.5 KiB	27.7 KiB
vitamin a thyroid hormone good eyesight `div.article-post > a > div.article-img > img.mlazyloaded`	/ImageServer/Public/2026/April/lead/vitamin-a-thyroid-hor...	34.3 KiB	27.3 KiB
melatonin sleep deprivation immune dysregulation `div.columns > a > div.article-img > img.mlazyloaded`	/ImageServer/Public/2026/April/lead/melatonin-sleep-depri...	21.2 KiB	20.6 KiB
early warning signs pancreatic problems `a > div.article-post > div.article-img > img.mlazyloaded`	/ImageServer/Public/2026/April/lead/early-warning-signs-p...	20.1 KiB	19.5 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-8-IMG

nodeLabel: vitamin a thyroid hormone good eyesight

path: 1,HTML,1,BODY,0,DIV,3,FORM,6,DIV,4,SECTION,6,DIV,0,DIV,0,DIV,0,DIV,0,A,1,DIV,0,IMG

selector: div.article-post > a > div.article-img > img.mlazyloaded

snippet: <img class=" mlazyloaded" data-mlazyload-src="//media.mercola.com/ImageServer/Public/2026/April/lead/vitamin-a-thyroid-h…" alt="vitamin a thyroid hormone good eyesight" style="opacity: 1;" src="//media.mercola.com/ImageServer/Public/2026/April/lead/vitamin-a-thyroid-h…">

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.

URL	Transfer Size	Duration
cmp.osano.com/w3u6cvyELf/53173368-3d4e-414e-8224-aaf0a9213b23/osano.js	43.7 KiB	1.3 s
www.mercola.com/CMSPages/GetCSS.aspx?stylesheetname=wwwtfs2020	32.2 KiB	450 ms
media.mercola.com/assets/js/comserver/mercolajquery1.js?v=20260422	41.9 KiB	459 ms
media.mercola.com/assets/js/osano/MercolaCustomJS.js?v=20260422	9.9 KiB	153 ms
media.mercola.com/assets/css/osano/MercolaCustomCSS.css?v=20260422	5.2 KiB	791 ms
media.mercola.com/assets/js/mercoladatalayer/mercoladatalayer20210126.js	6.5 KiB

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: 802 ms

URL	Time Spent
mercola.com/	802 ms
www.mercola.com/	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

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: 330 ms 12.8 KiB

URL	Transfer Size	Est Savings
media.mercola.com/assets/js/comserver/mercolajquery1.js?v=20260422	37.7 KiB	6.6 KiB
/assets/js/comserver/mercolalibrary.js?v=20260422&_=17768...	31.6 KiB	4.2 KiB
media.mercola.com/assets/js/osano/MercolaCustomJS.js?v=20260422	5.7 KiB	2.0 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: 330 ms 153.3 KiB

URL	Transfer Size	Est Savings
@font-face{font-family:'Alike Angular';font-style:normal;font-display:swap;src:url(//media.mercola.…	149.2 KiB	125.2 KiB
www.mercola.com/CMSPages/GetCSS.aspx?stylesheetname=wwwtfs2020	32.0 KiB	28.2 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: 460 ms 158.1 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-4MC0V1BXBK&cx=c&gtm=4e64k0	158.1 KiB	65.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-T542QZJD	127.0 KiB	61.8 KiB
/assets/js/comserver/mercolascript.js?v=20260422&_=177688...	35.4 KiB	31.1 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
www.mercola.com/	488 ms	57 ms	3.1 ms
www.mercola.com/cdn-cgi/challenge-platform/scripts/jsd/main.js	466 ms	411 ms	6.9 ms
Unattributable	456 ms	6.0 ms	0.0 ms
scripts.clarity.ms/0.8.59/clarity.js	401 ms	339 ms	6.6 ms
cmp.osano.com/w3u6cvyELf/53173368-3d4e-414e-8224-aaf0a9213b23/osano.js	387 ms	325 ms	16 ms
www.mercola.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js	267 ms	237 ms	7.9 ms
www.googletagmanager.com/gtag/js?id=G-4MC0V1BXBK&cx=c&gtm=4e64k0	245 ms	197 ms	37 ms
/assets/js/comserver/mercolalibrary.js?v=20260422&_=17768...	196 ms	101 ms	8.2 ms
www.googletagmanager.com/gtm.js?id=GTM-T542QZJD	176 ms	135 ms	28 ms
/assets/js/comserver/mercolascript.js?v=20260422&_=177688...	157 ms	113 ms	13 ms
media.mercola.com/assets/js/comserver/mercolajquery1.js?v=20260422	134 ms	72 ms	8.8 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	671 ms
Style & Layout	248 ms
Script Parsing & Compilation	141 ms
Rendering	130 ms
Parse HTML & CSS	126 ms
Garbage Collection	92 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.	Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.	Not actionable

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
media.mercola.com/assets/images/mercola/media-new-bg.png	771.0 KiB
/assets/images/cads/butyrate-immune-system-hot-topic-mobi...	241.7 KiB
www.mercola.com/	187.8 KiB
media.mercola.com/assets/images/mercola/dr-mercola-desktop.png	176.2 KiB
www.googletagmanager.com/gtag/js?id=G-4MC0V1BXBK&cx=c&gtm=4e64k0	158.1 KiB
/assets/images/cads/butyrate-immune-system-hot-topic-desk...	140.5 KiB
media.mercola.com/assets/images/mercola/dr-mercola-mobile.png	129.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-T542QZJD	127.3 KiB
media.mercola.com/assets/fonts/font-awesome/version5/fa-solid-900.woff	106.0 KiB
media.mercola.com/assets/fonts/font-awesome/version5/fa-brands-400.woff	93.3 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
Mercola Market `div.nav-right > div.shop-ad > a > img.shop-icon-mob`	media.mercola.com/assets/images/mercola/ico-cart-mobile.svg
the epoch times logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/the-epoch-times-logo.png
the epoch times logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/the-epoch-times-logo.png
the epoch times logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/the-epoch-times-logo.png
cbs news logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/cbs-news-logo.png
cbs news logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/cbs-news-logo.png
cbs news logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/cbs-news-logo.png
usa today 10best logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/usa-today-10best-logo.png
usa today 10best logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/usa-today-10best-logo.png
usa today 10best logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/usa-today-10best-logo.png
cnet logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/cnet-logo.png
cnet logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/cnet-logo.png
cnet logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/cnet-logo.png
first for women logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/first-for-women-logo.png
first for women logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/first-for-women-logo.png
first for women logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/first-for-women-logo.png
the dr oz show logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/dr-oz-show-logo.png
the dr oz show logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/dr-oz-show-logo.png
the dr oz show logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/dr-oz-show-logo.png
nbc10 boston logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/nbc10-boston-logo.png
nbc10 boston logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/nbc10-boston-logo.png
nbc10 boston logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/nbc10-boston-logo.png
dc news now logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/dc-news-now-logo.png
dc news now logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/dc-news-now-logo.png
dc news now logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/dc-news-now-logo.png
us weekly logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/us-weekly-logo.png
us weekly logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/us-weekly-logo.png
us weekly logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/us-weekly-logo.png
fox news logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/fox-news-logo.png
fox news logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/fox-news-logo.png
fox news logo `div.logos-marquee > div.home-logo-wrapper > div.clients-grid > img`	media.mercola.com/assets/images/mercola/fox-news-logo.png
Twitter `div.max-width > div.social-media > a > img.mlazyload`
Telegram `div.max-width > div.social-media > a > img.mlazyload`
Gab `div.max-width > div.social-media > a > img.mlazyload`
Truth Social `div.max-width > div.social-media > a > img.mlazyload`
MeWe `div.max-width > div.social-media > a > img.mlazyload`
Tiktok `div.max-width > div.social-media > a > img.mlazyload`
BitChute `div.max-width > div.social-media > a > img.mlazyload`
Rumble `div.max-width > div.social-media > a > img.mlazyload`

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

●Layout shift culprits

●Optimize DOM size

●Font display

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 5 user timings

●Avoid long main-thread tasks 13 long tasks found

●Network Requests

●Network Round Trip Times 100 ms

●Server Backend Latencies 110 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 400 ms

○INP breakdown

○Avoid non-composited animations

○Avoid large layout shifts

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
As featured on TV and Publications: `div.max-width > div.content-wrapper > div.featured-new > p.featured-new-text`

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
click here `section.footer > div.max-width > p > a`

These are opportunities to improve the legibility of your content.

Navigation

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Charities & Organizations `div.max-width > div.footer-links-mob > div#accordion > h4.accordion-title`

These are opportunities to improve keyboard navigation in your application.

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.js `html.js`

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
SUBSCRIBE (Free) `div.max-width > div.subscription-form > div.subscription-button > a#ctl00_NLSubscriptionBottom_btnSubscribe`

○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

●`[role]` values are valid

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

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

●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.

●`button`, `link`, and `menuitem` elements have accessible names

●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

●`<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.

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

●Deprecated ARIA roles were not used

●Image elements do not have `[alt]` attributes that are redundant text.

○`[accesskey]` values are unique

○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

○Buttons have an accessible name

○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

○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

○Identical links have the same purpose.

○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	www.mercola.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	www.mercola.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	www.mercola.com/cdn-cgi/challenge-platform/scripts/jsd/main.js

●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

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Ensure proper origin isolation with COOP

○Mitigate clickjacking with XFO or CSP

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

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
www.mercola.com/Citations/index.htm	click here

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 are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`