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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.

88

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
/-/media/rtx/airshow/home/eecb24e62bfddfe770e8c13bae90406...604800.0 s655.8 KiB
/-/media/rtx/airshow/what-we-do/advanced-aviation/civil-m...604800.0 s304.3 KiB
prd-media-assets-cdn.rtx.com/shared/fonts/ObjektivMk2_W_LtIt.woff228800.0 s45.5 KiB
prd-media-assets-cdn.rtx.com/shared/fonts/ObjektivMk2_W_It.woff228800.0 s43.7 KiB
prd-media-assets-cdn.rtx.com/shared/fonts/ObjektivMk2_W_Bd.woff228800.0 s42.2 KiB
prd-media-assets-cdn.rtx.com/shared/fonts/ObjektivMk2_W_Lt.woff228800.0 s41.7 KiB
prd-media-assets-cdn.rtx.com/shared/fonts/ObjektivMk2_W_Rg.woff228800.0 s40.3 KiB
/-/media/ray/s/spy-6/spy-6.jpg?h=1080&iar=0&w=1920&rev=51...604800.0 s215.1 KiB
/-/media/base-themes/rtx-core-libraries/scripts/optimized...604800.0 s188.8 KiB
/-/media/rtx/airshow/home/0bdbe398f8702ea60a58778a3ed8b36...604800.0 s166.9 KiB
/-/media/rtx/airshow/protecting-world/searam_1920x1080.jp...604800.0 s107.8 KiB
/-/media/project/raytheon-technologies/shared/t/tomahawk/...604800.0 s97.4 KiB
/-/media/rtx/news-images/2026/01/hp_sizzle_frame1_1920x10...604800.0 s88.5 KiB
www.rtx.com/cdn-cgi/challenge-platform/h/g/scripts/jsd/aae2b9a1c261/main.js?14400.0 s9.4 KiB
/-/media/base-themes/rtx-third-party-components-themes/sc...604800.0 s62.6 KiB
/-/media/rtx/airshow/1e998c39-32fa-4973-9df2-8c41fb9d3deb...604800.0 s56.9 KiB
/-/media/base-themes/airshow/styles/optimized-min.css?rev...604800.0 s51.5 KiB
/-/media/rtx/our-company/megamenu/images/rtx_nav_gentlema...604800.0 s41.4 KiB
/-/media/themes/raytheon-technologies/rtx-shared/rtx-them...604800.0 s32.0 KiB
/-/media/rtx/airshow/home/b2f2f0e52889939dd0d158ba7850fb3...604800.0 s30.1 KiB
/-/media/rtx/airshow/717b898c-614b-4177-a320-92f0d5c53599...604800.0 s27.1 KiB
/-/media/rtx/airshow/home/homepage-card-3.jpg?rev=4fb3909...604800.0 s25.5 KiB
/-/media/extension-themes/rtx-colors/styles/pre-optimized...604800.0 s24.4 KiB
/-/media/rtx/our-company/megamenu/images/plane-takes-off-...604800.0 s23.2 KiB
/-/media/rtx/airshow/home/homepage-card-2.jpg?rev=9e5e2c3...604800.0 s18.5 KiB
/-/media/base-themes/airshow/scripts/optimized-min.js?rev...604800.0 s17.5 KiB
/-/media/rtx/airshow/home/homepage-card-1.jpg?rev=5f6784f...604800.0 s15.2 KiB
/-/media/base-themes/rtx-carousel/scripts/optimized-min.j...604800.0 s14.7 KiB
/-/media/base-themes/cards/styles/pre-optimized-min.css?r...604800.0 s11.3 KiB
/-/media/themes/raytheon-technologies/rtx-shared/rtx-them...604800.0 s8.8 KiB
www.rtx.com/layouts/system/VisitorIdentification.js28800.0 s1.5 KiB
/-/media/base-themes/rtx-third-party-components-themes/st...604800.0 s7.2 KiB
/-/media/base-themes/scroll-lock/scripts/optimized-min.js...604800.0 s5.9 KiB
/-/media/base-themes/rtx-gdpr/styles/pre-optimized-min.cs...604800.0 s5.6 KiB
/-/media/base-themes/rtx-gdpr/scripts/optimized-min.js?re...604800.0 s5.4 KiB
/-/media/base-themes/news-template/styles/pre-optimized-m...604800.0 s5.2 KiB
/-/media/base-themes/hero/styles/pre-optimized-min.css?re...604800.0 s4.6 KiB
prd-media-assets-cdn.rtx.com/shared/fonts/fonts.css?v=128800.0 s678 B
/-/media/base-themes/rtx-carousel/styles/pre-optimized-mi...604800.0 s3.6 KiB
/-/media/themes/raytheon-technologies/rtx-shared/rtx-them...604800.0 s3.4 KiB
/-/media/base-themes/content-card/styles/pre-optimized-mi...604800.0 s3.3 KiB
/-/media/base-themes/sc-main-theme-js/scripts/optimized-m...604800.0 s3.3 KiB
/-/media/base-themes/hero/scripts/pre-optimized-min.js?re...604800.0 s3.2 KiB
/-/media/themes/raytheon-technologies/rtx-shared/rtx-them...604800.0 s3.0 KiB
/-/media/base-themes/news-template/scripts/pre-optimized-...604800.0 s2.7 KiB
/-/media/base-themes/xa-api/scripts/optimized-min.js?rev=...604800.0 s1.9 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.

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.

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
div.row > div.esds-vml-content-card__image > picture > img div.row > div.esds-vml-content-card__image > picture > img
/-/media/rtx/airshow/home/eecb24e62bfddfe770e8c13bae90406...654.7 KiB639.6 KiB
a.esds-vml-hero-news-card > div.esds-vml-hero-news-card__image > picture > img a.esds-vml-hero-news-card > div.esds-vml-hero-news-card__image > picture > img
/-/media/ray/s/spy-6/spy-6.jpg?h=1080&iar=0&w=1920&rev=51...214.5 KiB209.3 KiB
Civil aviation rescue helicopter AW139 in flight div.esds-vml-carousel__slide > figure > picture > img
/-/media/rtx/airshow/what-we-do/advanced-aviation/civil-m...303.6 KiB189.4 KiB
Wing mounted munitions a.esds-vml-hero-news-card > div.esds-vml-hero-news-card__image > picture > img
/-/media/rtx/news-images/2026/01/hp_sizzle_frame1_1920x10...88.0 KiB85.8 KiB
SeaRAM launch over water div.esds-vml-carousel__slide > figure > picture > img
/-/media/rtx/airshow/protecting-world/searam_1920x1080.jp...105.6 KiB54.1 KiB
A Tomahawk missile firing from a ship div > div.esds-vml-hero__image > picture > img
/-/media/project/raytheon-technologies/shared/t/tomahawk/...95.2 KiB27.4 KiB
div.esds-vml-cards__image > div.esds-vml-cards--image-linked > a > img div.esds-vml-cards__image > div.esds-vml-cards--image-linked > a > img
/-/media/rtx/airshow/1e998c39-32fa-4973-9df2-8c41fb9d3deb...54.7 KiB16.0 KiB
div.esds-vml-cards__image > div.esds-vml-cards--image-linked > a > img div.esds-vml-cards__image > div.esds-vml-cards--image-linked > a > img
/-/media/rtx/airshow/717b898c-614b-4177-a320-92f0d5c53599...26.7 KiB9.5 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-5-IMG
nodeLabel: A Tomahawk missile firing from a ship
path: 5,HTML,2,BODY,1,DIV,1,HEADER,0,DIV,4,SECTION,0,DIV,0,DIV,0,PICTURE,2,IMG
selector: div > div.esds-vml-hero__image > picture > img
snippet: <img alt="A Tomahawk missile firing from a ship" width="1920" height="1080" src="https://prd-sc102-cdn.rtx.com/-/media/project/raytheon-technologies/shared…">

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

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 8.6 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.

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: 90 ms 257.6 KiB

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
The page has an unload handler in the main frame.Actionable

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
RTX logo div.row > div.esds-mega-nav__logo > a > img
/-/media/themes/raytheon-technologies/rtx-shared/rtx-them...

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

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: 255 ms
URLTime Spent
rtx.com/255 ms
www.rtx.com/0.0 ms
●Time to Interactive 1.9 s
●Layout shift culprits
●Optimize DOM size
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 30 ms
●Minify JavaScript
●JavaScript execution time 0.1 s
●Minimizes main-thread work 0.4 s
●Avoid non-composited animations 2 animated elements found
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 260 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 230 ms
●Avoid large layout shifts 3 layout shifts found
○INP breakdown
○User Timing marks and measures
○Avoid long main-thread tasks
89

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.esds-vml-carousel__slide > figure > picture > img div.esds-vml-carousel__slide > figure > picture > 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.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Contacts Corporate and Business Headquarters RTX on LinkedIn RTX on X RTX on Fa… nav.footer__navigation > div.footer-grid > div.footer__navigation-list > ul
Corporate Governance Responsibility Contract Vehicles nav.footer__navigation > div.footer-grid > div.footer__navigation-list > ul
News Media Resources nav.footer__navigation > div.footer-grid > div.footer__navigation-list > ul
RTX Collins Aerospace Pratt & Whitney Raytheon nav.footer__navigation > div.footer-grid > div.footer__navigation-list > ul
Speak Up Code of Conduct nav.footer__navigation > div.footer-grid > div.footer__navigation-list > ul

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Skip to main content div#wrapper > header > div#header > button.esds-mega-nav__skip-link
RTX div > ul > li > a.active
Collins Aerospace div > ul > li > a
Pratt & Whitney div > ul > li > a
Raytheon div > ul > li > a
RTX 223.95 div > div.simple-stock-quote > div.initialized > a.esds-bu-bar__quote-link
RTX logo div > div.row > div.esds-mega-nav__logo > a
Who we are div.esds-mega-nav__main > ul.esds-mega-nav__dropdown-level1 > li > a
What we do div.esds-mega-nav__main > ul.esds-mega-nav__dropdown-level1 > li > a
News div.esds-mega-nav__main > ul.esds-mega-nav__dropdown-level1 > li > a
Careers div.esds-mega-nav__secondary > ul > li > a.icon--external-link
Investors div.esds-mega-nav__secondary > ul > li > a.icon--external-link
Suppliers div.esds-mega-nav__secondary > ul > li > a
Contacts div.esds-mega-nav__secondary > ul > li > a
Input search request div.row > div.esds-mega-nav__search-bar > form.esds-mega-nav__search-bar-form > input#searchBar
Submit search request div.row > div.esds-mega-nav__search-bar > form.esds-mega-nav__search-bar-form > button.esds-mega-nav__search-bar-form-submit
rtx div > div.footer-row > div.footer-nav__logo > a
Accept recommended settings div.component-content > div.gdpr > div.gdpr__buttons > a.gdpr__btn
Accept necessary cookies only div.component-content > div.gdpr > div.gdpr__buttons > a.gdpr__btn
Manage settings div.gdpr > div.gdpr__buttons > div.gdpr__btn > a.initializeModal
RTX.com Privacy Policy div.component-content > div.gdpr > div.gdpr__link > a

These are opportunities to improve keyboard navigation in your application.

○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
●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
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●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
●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 have a discernible name
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●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
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[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 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 buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Links are distinguishable without relying on color.
○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

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
Unload event listeners are deprecated and will be removed.
SharedStorage
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
Fledge

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
www.rtx.com/ line 349, col 0
Error: <svg> attribute height: Unexpected end of attribute. Expected length, "".
www.rtx.com/ line 377, col 0
Error: <svg> attribute height: Unexpected end of attribute. Expected length, "".
www.rtx.com/ line 349, col 0
Error: <svg> attribute width: Unexpected end of attribute. Expected length, "".
www.rtx.com/ line 377, col 0
Error: <svg> attribute width: Unexpected end of attribute. Expected length, "".
●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 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
85

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
div.esds-vml-carousel__slide > figure > picture > img div.esds-vml-carousel__slide > figure > picture > img

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
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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