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Lighthouse Desktop

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

Audit breakdown by category with detailed findings.

94

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.

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.

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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:95.253 source:map[type:text value:[unattributed]]]]

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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

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
li#v-2 > div.carousel-item > a > img li#v-2 > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/human-body-quiz.jpg26.7 KiB16.4 KiB
section.promo > div.wrapper > a > img section.promo > div.wrapper > a > img
/images/slideshow/xl-sq-promos/what-happens-when-you-drin...25.1 KiB14.3 KiB
li#v-1 > div.carousel-item > a > img li#v-1 > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/ulcerative-colitis-5.jpg21.0 KiB10.7 KiB
li#v-0 > div.carousel-item > a > img li#v-0 > div.carousel-item > a > img
/images/mobile/hp_promo/skin-psoriasis-disease-slideshow.jpg19.2 KiB9.1 KiB
li#v-5 > div.carousel-item > a > img li#v-5 > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/cauliflower-ear-illustration.jpg18.1 KiB8.6 KiB
li#v-3 > div.carousel-item > a > img li#v-3 > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/kidney-disease-quiz.jpg17.3 KiB8.2 KiB
li#v-4 > div.carousel-item > a > img li#v-4 > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/illustrations-of-colon.jpg13.2 KiB6.3 KiB

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.

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: 202 ms
URLTime Spent
medicinenet.com/202 ms
www.medicinenet.com/0.0 ms

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
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

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.

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 183.1 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
li.carousel__slide > div.carousel-item > a > img li.carousel__slide > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/human-body-quiz.jpg
li.carousel__slide > div.carousel-item > a > img li.carousel__slide > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/kidney-disease-quiz.jpg
li.carousel__slide > div.carousel-item > a > img li.carousel__slide > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/illustrations-of-colon.jpg
li.carousel__slide > div.carousel-item > a > img li.carousel__slide > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/cauliflower-ear-illustration.jpg
li#v-0 > div.carousel-item > a > img li#v-0 > div.carousel-item > a > img
/images/mobile/hp_promo/skin-psoriasis-disease-slideshow.jpg
li#v-1 > div.carousel-item > a > img li#v-1 > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/ulcerative-colitis-5.jpg
li#v-2 > div.carousel-item > a > img li#v-2 > div.carousel-item > a > img
images.medicinenet.com/images/mobile/hp_promo/human-body-quiz.jpg

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

Time to Interactive 2.2 s
Layout shift culprits
Optimize DOM size
LCP breakdown
LCP request discovery
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
Avoids enormous network payloads Total size was 1,580 KiB
User Timing marks and measures 7 user timings
JavaScript execution time 0.6 s
Minimizes main-thread work 1.5 s
Avoid long main-thread tasks 4 long tasks found
Avoid non-composited animations 1 animated element found
Network Requests
Network Round Trip Times 100 ms
Server Backend Latencies 270 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 180 ms
Avoid large layout shifts 15 layout shifts found
INP breakdown
87

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
Subscribe div#ContentPane1 > div.medicinenet-global-header > div.medicinenet-global-header__subscribe > div
FEATURED section.promo > div.wrapper > a > span
DRUGS & HERBS div.container > div.wrapper > a > span
Tuesday, April 21 div.container > div.wrapper > a > div.timestamp
ALLERGIES div.container > div.wrapper > a > span
Tuesday, April 21 div.container > div.wrapper > a > div.timestamp
ASTHMA div.container > div.wrapper > a > span
Tuesday, April 21 div.container > div.wrapper > a > div.timestamp
FITNESS, EXERCISE, SPORTS div.container > div.wrapper > a > span
Tuesday, April 21 div.container > div.wrapper > a > div.timestamp
CAREGIVER div.container > div.wrapper > a > span
Tuesday, April 21 div.container > div.wrapper > a > div.timestamp
PAIN MANAGEMENT div.container > div.wrapper > a > span
Tuesday, April 21 div.container > div.wrapper > a > div.timestamp
SKIN PROBLEMS & TREATMENTS li.carousel__slide > div.carousel-item > a > span
HYPERTENSION (HIGH BLOOD PRESSURE, HBP) div.container > div.wrapper > a > span
HEART DISEASE div.container > div.wrapper > a > span
DIABETES - GENERAL div.container > div.wrapper > a > span
SEXUAL CONDITIONS div.container > div.wrapper > a > span
PROSTATE CANCER div.container > div.wrapper > a > span
HYPERTENSION (HIGH BLOOD PRESSURE, HBP) div.container > div.wrapper > a > span
LIVER DISEASE div.container > div.wrapper > a > span
LUNG CONDITIONS (COPD, BRONCHITIS) div.container > div.wrapper > a > span
KIDNEY DISEASE div.container > div.wrapper > a > span
ANEMIA div.container > div.wrapper > a > span
form#subscribeForm > div.newsletter_cont_popup > div#message > input#email form#subscribeForm > div.newsletter_cont_popup > div#message > input#email
SKIN PROBLEMS & TREATMENTS div.container > div.wrapper > a > span
RHEUMATOID ARTHRITIS div.container > div.wrapper > a > span
PSORIASIS div.container > div.wrapper > a > span
ANXIETY/PANIC DISORDERS div.container > div.wrapper > a > span
HYPERTENSION (HIGH BLOOD PRESSURE, HBP) div.container > div.wrapper > a > span
BIRTH CONTROL div.container > div.wrapper > a > span
HEART FAILURE div.container > div.wrapper > a > span
KIDNEY DISEASE div.container > div.wrapper > a > span
NUTRITION AND HEALTHY EATING div.container > div.wrapper > a > span
HEALTH TOPICS div.container > div.wrapper > a > span
DIET AND WEIGHT LOSS div.container > div.wrapper > a > span
MEN'S CONDITIONS div.container > div.wrapper > a > span
Featured Centers div.from_webmd > div.content > div.wrapper > h5
What Are the Best PsA Treatments for You? div.wrapper > ul > li > a
Understanding Biologics div.wrapper > ul > li > a
10 Things People With Depression Wish You Knew div.wrapper > ul > li > a
Pill Identifier section.rowExtra > div.col > div.RxList > h5
Quick and easy pill identification div.RxList > ul > li > a
Find a Pharmacy section.rowExtra > div.col > div.RxList > h5
Includes 24 hour locations! div.RxList > ul > li > a
Drug Interaction Checker section.rowExtra > div.col > div.RxList > h5
See potential drug interactions div.RxList > ul > li > a
Medical Slideshows div.health-centers-links > ul > li > a
Diseases & Conditions div.health-centers-links > ul > li > a
Procedures & Tests div.health-centers-links > ul > li > a
Medications div.health-centers-links > ul > li > a
Healthy Living div.health-centers-links > ul > li > a
Image Collection div.health-centers-links > ul > li > a
Quizzes div.health-centers-links > ul > li > a
Allergies div.popular-health-center-links > ul > li > a
Arthritis div.popular-health-center-links > ul > li > a
Blood Pressure div.popular-health-center-links > ul > li > a
Cancer div.popular-health-center-links > ul > li > a
Chronic Pain div.popular-health-center-links > ul > li > a
Cold & Flu div.popular-health-center-links > ul > li > a
Depression div.popular-health-center-links > ul > li > a
Diabetes div.popular-health-center-links > ul > li > a
Digestion div.popular-health-center-links > ul > li > a
Health & Living div.popular-health-center-links > ul > li > a
Healthy Kids div.popular-health-center-links > ul > li > a
Hearing & Ear div.popular-health-center-links > ul > li > a
Heart div.popular-health-center-links > ul > li > a
HIV/AIDS div.popular-health-center-links > ul > li > a
Infection Disease div.popular-health-center-links > ul > li > a
Men's Health div.popular-health-center-links > ul > li > a
Mental Health div.popular-health-center-links > ul > li > a
Neurology div.popular-health-center-links > ul > li > a
Pregnancy div.popular-health-center-links > ul > li > a
Sexual Health div.popular-health-center-links > ul > li > a
Skin div.popular-health-center-links > ul > li > a
Thyroid div.popular-health-center-links > ul > li > a
Women's Health div.popular-health-center-links > ul > li > a
More... div.popular-health-center-links > ul > li > a
Privacy Policy div.medicinenet-privacy-links > ul > li > a
About Us div.medicinenet-privacy-links > ul > li > a
Contact Us div.medicinenet-privacy-links > ul > li > 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
Featured Centers div.from_webmd > div.content > div.wrapper > h5
Pill Identifier section.rowExtra > div.col > div.RxList > h5

These are opportunities to improve keyboard navigation in your application.

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
footer.medicinenet-global-footer > div.footer-copy > div.badge > img.rgb_tag footer.medicinenet-global-footer > div.footer-copy > div.badge > img.rgb_tag
div.footer-copy > div.badge > a > img div.footer-copy > div.badge > 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
footer.medicinenet-global-footer > div.social-icons > div.social-icons-container > a.social-icon footer.medicinenet-global-footer > div.social-icons > div.social-icons-container > a.social-icon

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

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`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
Input buttons have discernible text.
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
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
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.
Document has a main landmark.
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
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 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

Browser Compatibility

A character encoding declaration is required. It can be done with a `<meta>` tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header. Learn more about declaring the character encoding.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
SharedStorage
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
Fledge
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
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
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
75

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.

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
footer.medicinenet-global-footer > div.footer-copy > div.badge > img.rgb_tag footer.medicinenet-global-footer > div.footer-copy > div.badge > img.rgb_tag
div.footer-copy > div.badge > a > img div.footer-copy > div.badge > a > img

Format your HTML in a way that enables crawlers to better understand your app’s content.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
footer.medicinenet-global-footer > div.social-icons > div.social-icons-container > a.social-icon footer.medicinenet-global-footer > div.social-icons > div.social-icons-container > a.social-icon
footer.medicinenet-global-footer > div.social-icons > div.social-icons-container > a.social-icon footer.medicinenet-global-footer > div.social-icons > div.social-icons-container > a.social-icon
footer.medicinenet-global-footer > div.footer-copy > div.badge > a footer.medicinenet-global-footer > div.footer-copy > div.badge > a

To appear in search results, crawlers need access to your app.

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
robots.txt is valid
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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