Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.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.
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
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.
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.
Performance issues directly impact user engagement and conversion rates.
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Est Savings |
|---|---|
| fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 | 40 ms |
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
app-feature.feature > div.feature__media > picture.feature__image > img app-feature.feature > div.feature__media > picture.feature__image > img | /getmedia/a3a2122e-d5b6-4fdc-9ea7-27d6677ca4e6/do-what-yo... | 155.9 KiB | 154.2 KiB |
app-feature.feature > div.feature__media > picture.feature__image > img app-feature.feature > div.feature__media > picture.feature__image > img | /getmedia/076fb45c-ae3d-4ca7-b6cf-ebc0e974cc34/dm-april-e... | 104.5 KiB | 100.4 KiB |
Be a Part of the Fight to End Alzheimer's app-modal#371ce916-43fa-4111-b50b-71a77d054fe7 > div.modal__inner > div.modal__media > img.modal__image | /getmedia/15204845-dcaa-40b2-910b-4e82c5d7359c/dm-modal-a... | 97.8 KiB | 89.5 KiB |
Return to the home page header.header__inner > div.header__logo > a.header__logo-link > img.header__logo-img | www.alz.org/getmedia/9835cc37-036e-4930-b77d-467a25c9db31/alz-stacked-rgb.png | 41.3 KiB | 39.7 KiB |
Mother and daughter div.banner-container > div.content-container > div.mobile-background-left > img.person-image | www.alz.org/getmedia/c8ef8273-e250-4104-93b1-df2341568592/mother-daughter.webp | 79.1 KiB | 21.2 KiB |
A close-up illustration of a brain, with neural pathways highlighted in various… div.col-sm-6 > div.card > div.card-thumb > img | /getmedia/d9e0fc1a-d260-4960-b65f-e96a7f72429f/alzheimers... | 25.2 KiB | 17.3 KiB |
Woman wearing Alzheimer's advocate sash div.col-sm-6 > div.card > div.card-thumb > img | /getmedia/98de5383-cb5f-4beb-8661-65d4410b6325/get_involv... | 13.8 KiB | 10.2 KiB |
A webinar moderator speaks with two people over video conference about Alzheime… div.col-sm-6 > div.card > div.card-thumb > img | /getmedia/6a1d0be2-5436-4114-a4f8-46d019004c85/alzheimers... | 7.9 KiB | 5.7 KiB |
A family affected by Alzheimer's sits on the sofa together, talking and laughin… div.col-sm-6 > div.card > div.card-thumb > img | /getmedia/b76be4b2-4908-4c98-8996-4f2c939b716e/find-a-cha... | 12.5 KiB | 4.9 KiB |
Young woman embracing her father div.row > div.col-lg-3 > picture > img.pt-4 | /getmedia/fc5a22d6-9c2a-4bc0-91af-96248e7d1889/young-woma... | 17.7 KiB | 4.6 KiB |
Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.
Performance issues directly impact user engagement and conversion rates.
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| /css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14.... | 822 B | 62 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| alz.org/ | 679 ms |
| www.alz.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.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.alz.org/_content/Kentico.Content.Web.Rcl/Scripts/jquery-3.5.1.js | 42.6 KiB | 7.7 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.alz.org/index.css?v=Qa__1h0epRGhVzkg3wU4gl4QXauKzHWIdutayBynx9w | 87.4 KiB | 78.3 KiB |
| .img-fluid { max-width: 100%; height: auto } … | 30.1 KiB | 29.5 KiB |
| 20.7 KiB | 17.9 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.
Performance issues directly impact user engagement and conversion rates.
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 1.4 s |
| Other | 375 ms |
| Script Parsing & Compilation | 253 ms |
| Style & Layout | 130 ms |
| Rendering | 59 ms |
| Garbage Collection | 44 ms |
| Parse HTML & CSS | 28 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
Performance issues directly impact user engagement and conversion rates.
| Failure reason | Failure type |
|---|---|
| The page has an unload handler in the main frame. | Actionable |
| 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 |
Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| .img-fluid { max-width: 100%; height: auto } … | 32.5 KiB | 7.0 KiB |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
Young woman embracing her father div.row > div.col-lg-3 > picture > img.pt-4 | /getmedia/fc5a22d6-9c2a-4bc0-91af-96248e7d1889/young-woma... |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
body > img body > img |
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Volunteer with Us div.grid__item > app-feature.feature > div.feature__content > a.feature__cta |
DONATE
Make a Donation div.page > app-footer.footer > div.footer__tools > a.footer__tool |
24/7 HELPLINE
800.272.3900 div.page > app-footer.footer > div.footer__tools > a.footer__tool |
IN MY AREA
Local Resources div.page > app-footer.footer > div.footer__tools > a.footer__tool |
Privacy Policy. div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-cookie-policy-link |
Best Practices
General
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| Unload event listeners are deprecated and will be removed. | js.monitor.azure.com/scripts/b/ai.2.min.js line 4, col 20534 |
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
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
Failed to load resource: the server responded with a status of 400 () |
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.
Crawling and Indexing
If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.
Performance issues directly impact user engagement and conversion rates.
| Line # | Content | Error |
|---|---|---|
| 1 | Disallow: /cmsctx/ | No user-agent specified |
To appear in search results, crawlers need access to your app.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
body > img body > img |
Format your HTML in a way that enables crawlers to better understand your app’s content.