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.
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.
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
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
Main video content div.celwidget > div#cinex > div#a7dad1c1-3377-48ff-a53e-15dece9ca1ce > video.cui-video__player | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... | 1.6 MiB | 1.5 MiB |
Person using laptop at wooden desk in home office workspace with Alexa+ display… div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... | 720.5 KiB | 643.1 KiB |
Fire Tablets div > div > div > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... | 240.2 KiB | 226.1 KiB |
Fire TV div > div > div > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... | 238.4 KiB | 224.3 KiB |
Echo devices div > div > div > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... | 211.1 KiB | 197.0 KiB |
A video shows Alexa helping a customer with three tasks: suggesting a Kindle as… div.content-grid-col-wrapper > div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-9d2d3ada-8059-4107-a5a9-318829dbaeba | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... | 261.3 KiB | 195.9 KiB |
Alexa app div > div > div > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... | 177.6 KiB | 163.6 KiB |
United States a.nav-a > span.icp-nav-link-inner > span.nav-line-2 > span.icp-nav-flag | m.media-amazon.com/images/S/sash/MAbi1rCjQI9H2y0.png | 44.3 KiB | 35.0 KiB |
Alexa+ logo div.a-row > div.a-column > div.a-row > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... | 11.8 KiB | 11.3 KiB |
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 |
|---|---|---|
| /images/I/51waPb-h-9L._RC|71hInx-5zZL.css,41WcY5PbsbL.css... | 57.3 KiB | |
| /images/I/11WsGYSItxL._RC|01DE6WSvLKL.css,41ixaNR85ML.css... | 28.7 KiB | 83 ms |
| /images/I/21q-5RE8DOL.css?AUIClients/EregionWidgetFoundry... | 1.8 KiB | |
| /images/I/21skJF47J6L._RC|51Y8Xg9itbL.css_.css?AUIClients... | 7.4 KiB | 221 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 |
|---|---|
| amazonalexa.com/ | 210 ms |
| www.amazon.com/alexaplus | 0.0 ms |
Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| www.amazon.com/alexaplus | 1.1 s |
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.
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.
Performance issues directly impact user engagement and conversion rates.
Diagnostics
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.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /monera-app/_next/static/chunks/pages/_app-1ee51a5fbd31fe... | 191.3 KiB | 126.7 KiB |
| /widget-renderable/mars-widget-storytelling-carousel-widg... | 189.8 KiB | 88.4 KiB |
| /images/I/51jC0T3AfxL._RC|71UsRuRKoEL.js,416IQz5llzL.js,0... | 122.2 KiB | 75.7 KiB |
| /monera-app/_next/static/chunks/app-7025fb108e5e12da.js | 107.9 KiB | 47.8 KiB |
| /images/I/11I0WXrZVoL._RC|11Y+5x+kkTL.js,518IfuPC2lL.js,1... | 68.8 KiB | 45.9 KiB |
| /monera-app/_next/static/chunks/852-43b1038b94cd1311.js | 60.9 KiB | 38.6 KiB |
| m.media-amazon.com/images/I/81kCF8wuZEL.js?AUIClients/FWCIMAssets | 56.3 KiB | 35.4 KiB |
| m.media-amazon.com/images/I/71KPXWmUoBL.js?AUIClients/IdentitySSOJsSDK | 33.9 KiB | 20.9 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Total CPU Time | Script Evaluation | Script Parse |
|---|---|---|---|
| www.amazon.com/alexaplus | 859 ms | 252 ms | 58 ms |
| /images/I/11I0WXrZVoL._RC|11Y+5x+kkTL.js,518IfuPC2lL.js,1... | 382 ms | 224 ms | 11 ms |
| Unattributable | 310 ms | 5.9 ms | 0.0 ms |
| /images/I/51jC0T3AfxL._RC|71UsRuRKoEL.js,416IQz5llzL.js,0... | 232 ms | 148 ms | 18 ms |
| /monera-app/_next/static/chunks/framework-21bee21590f1dc0... | 223 ms | 202 ms | 18 ms |
| /widget-renderable/mars-widget-storytelling-carousel-widg... | 203 ms | 129 ms | 1.3 ms |
| /monera-app/_next/static/chunks/pages/dp/[asin]-6d740c6b4... | 172 ms | 152 ms | 0.1 ms |
| m.media-amazon.com/images/I/61xJcNKKLXL.js?AUIClients/AmazonUIjQuery | 101 ms | 28 ms | 2.9 ms |
| /monera-app/_next/static/chunks/852-43b1038b94cd1311.js | 99 ms | 22 ms | 5.8 ms |
| /monera-app/_next/static/chunks/pages/_app-1ee51a5fbd31fe... | 86 ms | 65 ms | 20 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
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 1.3 s |
| Style & Layout | 552 ms |
| Other | 469 ms |
| Script Parsing & Compilation | 182 ms |
| Parse HTML & CSS | 155 ms |
| Rendering | 104 ms |
| Garbage Collection | 49 ms |
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 |
|---|---|---|
| /widget-renderable/mars-widget-storytelling-carousel-widg... | 189.8 KiB | 74.9 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 |
|---|---|---|
| /images/I/51waPb-h-9L._RC|71hInx-5zZL.css,41WcY5PbsbL.css... | 103.2 KiB | 93.2 KiB |
| /images/I/11WsGYSItxL._RC|01DE6WSvLKL.css,41ixaNR85ML.css... | 50.8 KiB | 47.3 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 | |
|---|---|
Person using laptop at wooden desk in home office workspace with Alexa+ display… div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
Echo Show displaying Smart Home interface on a kitchen counter while someone ch… div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
Echo Show devices and Echo speakers arranged with Amazon delivery box and popco… div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
a.a-link-normal > div#mn-nav-stripe-header-div > div.mn-nav-stripe-brand > img a.a-link-normal > div#mn-nav-stripe-header-div > div.mn-nav-stripe-brand > img | /images/G/01/kindle/NavBar2025/echo/2025-03/56/small/alex... |
Blue outline icon of a speech bubble containing three horizontal lines represen… div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
Blue curved arrow symbol transitioning from darker to lighter blue, forming a l… div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
Blue curved arrow looping around and pointing to the right, shown in a gradient… div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
Blue outline icon of a house with Wi-Fi signal waves inside, representing smart… div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
Blue circle to square path icon div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
Document with bullet points icon div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
Speech bubble icon div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
Smiling face icon div.content-grid-col-wrapper > div.a-column > div.content-grid-block > img | /images/G/01/kindle/journeys/oQT2KogqnFeLs2FZXU6Y9ZuQEcqp... |
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Search Amazon form#nav-search-bar-form > div.nav-fill > div.nav-search-field > input#twotabsearchtextbox |
Some ARIA roles have required attributes that describe the state of the element to screen readers. Learn more about roles and required attributes.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
New Devices div#ucw-widget-upsell--1537871196 > div#ucw-widget-upsell-category--1537871196 > ul#ucw-category-list--1537871196 > li.a-spacing-small |
Smart Displays div#ucw-widget-upsell--1537871196 > div#ucw-widget-upsell-category--1537871196 > ul#ucw-category-list--1537871196 > li.a-spacing-small |
Smart Speakers div#ucw-widget-upsell--1537871196 > div#ucw-widget-upsell-category--1537871196 > ul#ucw-category-list--1537871196 > li.a-spacing-small |
Fire TVs div#ucw-widget-upsell--1537871196 > div#ucw-widget-upsell-category--1537871196 > ul#ucw-category-list--1537871196 > li.a-spacing-small |
Smart Home div#ucw-widget-upsell--1537871196 > div#ucw-widget-upsell-category--1537871196 > ul#ucw-category-list--1537871196 > li.a-spacing-small |
On-the-go div#ucw-widget-upsell--1537871196 > div#ucw-widget-upsell-category--1537871196 > ul#ucw-category-list--1537871196 > li.a-spacing-small |
Kids div#ucw-widget-upsell--1537871196 > div#ucw-widget-upsell-category--1537871196 > ul#ucw-category-list--1537871196 > li.a-spacing-small |
Tablets div#ucw-widget-upsell--1537871196 > div#ucw-widget-upsell-category--1537871196 > ul#ucw-category-list--1537871196 > li.a-spacing-small |
ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.
Informational: a Permissions-Policy directive showing feature -> allowed origins.
Source: MDN Permissions-Policy
| Failing Elements |
|---|
div#a-page > header#navbar-main > div#navbar > div#nav-flyout-ewc div#a-page > header#navbar-main > div#navbar > div#nav-flyout-ewc |
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Ask more of your AI assistant div.a-row > div.a-column > div.a-row > h4.a-color-inverse |
Ready wherever you are div.content-grid-col-wrapper > div.a-column > div.content-grid-block > h5 |
Get to Know Us div.navFooterVerticalColumn > div.navFooterVerticalRow > div.navFooterLinkCol > div.navFooterColHead |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-9d2d3ada-8059-4107-a5a9-318829dbaeba > img.content-grid-cinemagraph-placeholder div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-9d2d3ada-8059-4107-a5a9-318829dbaeba > img.content-grid-cinemagraph-placeholder |
div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-d553c096-f3e7-442e-86e8-1f084e3320e1 > img.content-grid-cinemagraph-placeholder div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-d553c096-f3e7-442e-86e8-1f084e3320e1 > img.content-grid-cinemagraph-placeholder |
div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-353d5db8-939b-4c5e-aadc-6dd5df661cf6 > img.content-grid-cinemagraph-placeholder div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-353d5db8-939b-4c5e-aadc-6dd5df661cf6 > img.content-grid-cinemagraph-placeholder |
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.
Best practices
Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Expand to Change Language or Country div.nav-right > div#nav-tools > div#icp-nav-flyout > button.nav-flyout-button |
Expand Account and Lists div.nav-right > div#nav-tools > div#nav-link-accountList > button.nav-flyout-button |
Medical Care Details ul.nav-ul > li.nav-li > div#nav_link_allhealthingress > button.nav-flyout-button |
Prime Details ul.nav-ul > li.nav-li > div#nav-link-amazonprime > button.nav-flyout-button |
Gift Cards Details ul.nav-ul > li.nav-li > div#nav_link_gift_cards > button.nav-flyout-button |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
EN div.nav-right > div#nav-tools > div#icp-nav-flyout > a.nav-a |
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 |
|---|---|
| SharedStorage | www.amazon.com/alexaplus line 14877, col 2048 |
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: net::ERR_TRUST_TOKEN_OPERATION_FAILED | |
TypeError: Cannot read properties of null (reading 'querySelector')
at toggleWaitlist (<anonymous>:1:2721)
at <anonymous>:1:3051
at n (https://www.amazon.com/alexaplus:99:275)
at https://www.amazon.com/alexaplus:101:98
at z (https://www.amazon.com/alexaplus:102:278) |
Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| Link destination | Link Text |
|---|---|
| www.amazon.com/amazonprime?ref_=xaa_spp_d_ap_li | learn more |
| www.amazon.com/hz5/yourmembershipsandsubscriptions?ref_=xaa_spp_faq_d_li_yms | here |
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 |
|---|
div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-9d2d3ada-8059-4107-a5a9-318829dbaeba > img.content-grid-cinemagraph-placeholder div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-9d2d3ada-8059-4107-a5a9-318829dbaeba > img.content-grid-cinemagraph-placeholder |
div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-d553c096-f3e7-442e-86e8-1f084e3320e1 > img.content-grid-cinemagraph-placeholder div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-d553c096-f3e7-442e-86e8-1f084e3320e1 > img.content-grid-cinemagraph-placeholder |
div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-353d5db8-939b-4c5e-aadc-6dd5df661cf6 > img.content-grid-cinemagraph-placeholder div.a-column > div.content-grid-block > video#ods-cg-cinemagraph-353d5db8-939b-4c5e-aadc-6dd5df661cf6 > img.content-grid-cinemagraph-placeholder |
Format your HTML in a way that enables crawlers to better understand your app’s content.