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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

34

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
www.siemens.com/lib/helpers/esm/index.module.js60.0 s968.5 KiB
/siemens-disw-assets/public/qd6j45dyXFHDJjKplB9IY/en-US/n...3600.0 s161.9 KiB
/siemens-disw-assets/public/010IENXcvq7BPdNUqWUzgU/en-US/...3600.0 s159.7 KiB
/siemens-disw-assets/public/1hiCcpREAHFb8fXxrkQBxH/en-US/...3600.0 s130.0 KiB
metrics.siemens-cdn.com/js/container_UFefytkf.js600.0 s90.6 KiB
w3.siemens.com/ote/one/ote.js3600.0 s98.1 KiB
/siemens-disw-assets/public/wG3p1AhtlqDG4gIJ3DDGb/en-US/b...3600.0 s75.5 KiB
/siemens-disw-assets/public/6L9Gf2S0ySbNai9Rbl91vB/en-US/...3600.0 s71.2 KiB
/siemens-disw-assets/public/5fHvhxC9LFs6EOb5iyPj91/en-US/...3600.0 s59.6 KiB
/siemens-disw-assets/public/2EKyEytfmCkFLU21ABsH1r/en-US/...3600.0 s57.4 KiB
/siemens-disw-assets/public/4NMZhEY5MUDfbGGCDO1qiC/en-US/...3600.0 s50.2 KiB
/siemens-disw-assets/public/1WHSdv9JLwpjvo6L4X2Qdt/en-US/...3600.0 s42.2 KiB
/siemens-disw-assets/public/6lB6rIJsGKlqlFbKheQIwW/en-US/...3600.0 s41.2 KiB
/siemens-disw-assets/public/5rKmsRksp5kOaND1yCI7bs/en-US/...3600.0 s39.8 KiB
www.siemens.com/styles.css60.0 s29.7 KiB
/siemens-disw-assets/public/4pdixNxxEPvZQ1jlOtY6FL/en-US/...3600.0 s36.8 KiB
/siemens-disw-assets/public/6au1BBWgJxWXY8RwBnAsQc/en-US/...3600.0 s27.0 KiB
/siemens-disw-assets/public/6mmfnZro4HfiJ2hXnabOlk/en-US/...3600.0 s26.1 KiB
/siemens-disw-assets/public/1R68CfnBKE26iTpddCAfUs/en-US/...3600.0 s23.9 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/7734.js86400.0 s43.7 KiB
/siemens-disw-assets/public/2WnYDSkq1vOfGaQsfogiDc/en-US/...3600.0 s20.5 KiB
/siemens-disw-assets/public/7MqhcFp5xmCYVR9TfgirLv/en-US/...3600.0 s20.5 KiB
/siemens-disw-assets/public/3584vPMjPcglZmHVGe8iXq/en-US/...3600.0 s19.4 KiB
/siemens-disw-assets/public/2UhBCRigSbwCouAoUcWpmH/en-US/...3600.0 s19.2 KiB
static.sw.cdn.siemens.com/xd/xd-utils/1.x/xd-utils.min.js86400.0 s32.9 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/4133.js86400.0 s24.3 KiB
app.usercentrics.eu/browser-ui/latest/loader.js3600.0 s10.8 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/5895.js86400.0 s15.3 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/1120.js86400.0 s10.2 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/4549.js86400.0 s10.1 KiB
home-e31.niceincontact.com/inContact/ChatClient/js/embed.min.js0.0 ms4.0 KiB
www.siemens.com/js/is-land.js60.0 s3.7 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/3995.js86400.0 s8.7 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/2433.js86400.0 s7.6 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/4800.js86400.0 s6.5 KiB
www.siemens.com/siteScripts/analyticsEventBinder.js60.0 s2.6 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/206.js86400.0 s6.2 KiB
/siemens-disw-assets/public/44xkQvXrjOekI7Pldy2rZv/en-US/...3600.0 s2.5 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/index.js86400.0 s4.6 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/4764.js86400.0 s4.0 KiB
images.sw.cdn.siemens.com/logo/logo-white.svg3600.0 s1.8 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/9689.js86400.0 s3.6 KiB
/siemens-disw-assets/public/2Z7LYOEayHuJHzbfiXAzRD/en-US/...3600.0 s1.7 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/2626.js86400.0 s3.4 KiB
w3.siemens.com/ste/cookiemonster/cookiemonster.js3600.0 s1.7 KiB
www.siemens.com/img/chevron.svg60.0 s1.3 KiB
www.siemens.com/css/styles.css60.0 s1.3 KiB
/siemens-disw-assets/public/vJOHf8XpFI1Laabz7Bsc8/en-US/o...3600.0 s1.5 KiB
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/4462.js86400.0 s1.8 KiB
app.usercentrics.eu/session/1px.png?settingsId=GXj83XOdm1800.0 s817 B
/plugins/HeatmapSessionRecording/configs.php?idsite=73&tr...0.0 ms362 B
static.sw.cdn.siemens.com/digitalexperiences/utility/1.x/vendor.min.js604800.0 s442 B
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/index.js86400.0 s0 B

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
Person wearing VR headset with holographic interface, futuristic city skyline i… div#de-carousel-hc-1xr0g6eVI04TIpIkPTIzES > div.swiper-slide > div.hero-carousel-slide > img.hero-carousel-image
/siemens-disw-assets/public/qd6j45dyXFHDJjKplB9IY/en-US/n...161.2 KiB37.1 KiB
Assembly of the Audi e-tron GT at Böllinger Höfe. div#de-carousel-hc-1xr0g6eVI04TIpIkPTIzES > div.swiper-slide > div.hero-carousel-slide > img.hero-carousel-image
/siemens-disw-assets/public/010IENXcvq7BPdNUqWUzgU/en-US/...158.9 KiB34.8 KiB
Circular diagram showing interconnected sustainability concepts and partners div.swiper-slide > div > a.featured-card > img.featured-card__background-image
/siemens-disw-assets/public/4NMZhEY5MUDfbGGCDO1qiC/en-US/...49.5 KiB32.9 KiB
Panoramic city skyline. div.swiper-slide > article.de-solutions-carousel-card > div.de-solutions-carousel-card__media > img
/siemens-disw-assets/public/6L9Gf2S0ySbNai9Rbl91vB/en-US/...70.6 KiB26.0 KiB
Aerial Still of Rural Village and Landscape. div.swiper-slide > div > a.featured-card > img.featured-card__background-image
/siemens-disw-assets/public/6lB6rIJsGKlqlFbKheQIwW/en-US/...40.6 KiB24.0 KiB
A promotional image for Gridscale X Marketplace featuring a grid of icons and a… div.swiper-slide > article.de-solutions-carousel-card > div.de-solutions-carousel-card__media > img
/siemens-disw-assets/public/5fHvhxC9LFs6EOb5iyPj91/en-US/...59.0 KiB14.4 KiB
div.de-carousel-fallback__slide > div.swiper-slide > a.explore-card-background-image > img div.de-carousel-fallback__slide > div.swiper-slide > a.explore-card-background-image > img
/siemens-disw-assets/public/wG3p1AhtlqDG4gIJ3DDGb/en-US/b...74.9 KiB10.8 KiB
Diagram showing interconnected hexagons with icons, representing a partner ecos… div.swiper-slide > div > a.featured-card > img.featured-card__background-image
/siemens-disw-assets/public/1R68CfnBKE26iTpddCAfUs/en-US/...23.4 KiB6.7 KiB
Dog robot going on an inspection mission. div#de-carousel-hc-1xr0g6eVI04TIpIkPTIzES > div.swiper-slide > div.hero-carousel-slide > img.hero-carousel-image
/siemens-disw-assets/public/1hiCcpREAHFb8fXxrkQBxH/en-US/...129.4 KiB5.2 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-9-IMG
nodeLabel: Assembly of the Audi e-tron GT at Böllinger Höfe.
path: 0,DIV,0,DIV,0,DIV,0,DIV,0,IMG
selector: div.de-carousel-fallback__slide > div.swiper-slide > div.hero-carousel-slide > img.hero-carousel-image
snippet: <img class="hero-carousel-image" srcset="https://images.sw.cdn.siemens.com/siemens-disw-assets/public/010IENXcvq7BP…" src="https://images.sw.cdn.siemens.com/siemens-disw-assets/public/010IENXcvq7BP…" alt="Assembly of the Audi e-tron GT at Böllinger Höfe." loading="lazy">

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
value: No additional origins are good candidates for preconnecting

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.

URLTransfer SizeDuration
www.siemens.com/styles.css29.7 KiB842 ms
www.siemens.com/css/styles.css1.3 KiB537 ms
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/index.js0 B

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

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.

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: 1.9 s
URLTime Spent
siemens.com/874 ms
www.siemens.com/832 ms
www.siemens.com/en-us/index.html150 ms
www.siemens.com/en-us/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

Diagnostics

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.

URLTotal CPU TimeScript EvaluationScript Parse
static.sw.cdn.siemens.com/xd/xd-utils/1.x/xd-utils.min.js2.4 s2.1 s8.8 ms
Unattributable2.1 s935 ms0.0 ms
www.siemens.com/en-us/1.4 s108 ms2.7 ms
www.siemens.com/lib/helpers/esm/index.module.js1.2 s738 ms14 ms
metrics.siemens-cdn.com/js/container_UFefytkf.js814 ms742 ms43 ms
app.usercentrics.eu/browser-ui/3.98.1/index.module.js315 ms231 ms1.5 ms
w3.siemens.com/ste/ote_config/ote_config.aspx?fct=ste.net_callback262 ms240 ms0.3 ms
w3.siemens.com/ote/one/ote.js251 ms220 ms25 ms
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/2433.js172 ms119 ms1.7 ms
static.sw.cdn.siemens.com/xd/universal-components/1.x/web/7734.js87 ms70 ms17 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.

CategoryTime Spent
Script Evaluation5.7 s
Other1.5 s
Style & Layout969 ms
Garbage Collection472 ms
Rendering334 ms
Script Parsing & Compilation150 ms
Parse HTML & CSS131 ms

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: 0.0 ms 52.9 KiB
URLTransfer SizeEst Savings
www.siemens.com/styles.css29.0 KiB26.2 KiB
.section-heading-centered .buttonGroupOfTwo a,.section-he...17.1 KiB14.7 KiB
:root{--headerHeight: 144px;--subHeaderHeight: 60px;--headerHeightScroll: 92px;--headerHeightMobile…13.5 KiB12.1 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: 0.0 ms 967.4 KiB
URLTransfer SizeEst Savings
www.siemens.com/lib/helpers/esm/index.module.js967.5 KiB808.2 KiB
app.usercentrics.eu/browser-ui/3.98.1/index.module.js120.6 KiB54.1 KiB
w3.siemens.com/ote/one/ote.js97.6 KiB42.6 KiB
app.usercentrics.eu/browser-ui/3.98.1/VirtualServiceItem-b82c2a99.js48.6 KiB31.7 KiB
metrics.siemens-cdn.com/js/container_UFefytkf.js90.2 KiB30.7 KiB

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.

URLTransfer Size
www.siemens.com/lib/helpers/esm/index.module.js968.5 KiB
www.siemens.com/props/4Cfw4K4OVHp8piJ6XxeHzS-en-US.json540.4 KiB
www.siemens.com/props/1xr0g6eVI04TIpIkPTIzES-en-US.json536.5 KiB
/siemens-disw-assets/public/qd6j45dyXFHDJjKplB9IY/en-US/n...161.9 KiB
/siemens-disw-assets/public/010IENXcvq7BPdNUqWUzgU/en-US/...159.7 KiB
/siemens-disw-assets/public/1hiCcpREAHFb8fXxrkQBxH/en-US/...130.0 KiB
app.usercentrics.eu/browser-ui/3.98.1/index.module.js120.6 KiB
www.siemens.com/en-us/100.7 KiB
w3.siemens.com/ote/one/ote.js98.1 KiB
metrics.siemens-cdn.com/js/container_UFefytkf.js90.6 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
VA SYD landscape. div.imageWrapper > picture > picture > img.cardImgTop
/siemens-disw-assets/public/7MqhcFp5xmCYVR9TfgirLv/en-US/...
div.imageWrapper > picture > picture > img.cardImgTop div.imageWrapper > picture > picture > img.cardImgTop
/siemens-disw-assets/public/2GV5bimnwpCflV8wSbrkkr/en-US/...
Person using laptop with holographic display of data charts and graphs floating… div.container > div.de-banner__content > div.de-banner__image-wrapper > img.de-banner__image
/siemens-disw-assets/public/2WnYDSkq1vOfGaQsfogiDc/en-US/...
div.swiper-slide > a.explore-card-solid-color > div.explore-card-solid-color-content-wrapper > img div.swiper-slide > a.explore-card-solid-color > div.explore-card-solid-color-content-wrapper > img
/siemens-disw-assets/public/vJOHf8XpFI1Laabz7Bsc8/en-US/o...
div.container > div.de-banner__content > div.de-banner__image-wrapper > img.de-banner__image div.container > div.de-banner__content > div.de-banner__image-wrapper > img.de-banner__image
/siemens-disw-assets/public/2Z7LYOEayHuJHzbfiXAzRD/en-US/...
siemens pencils in a box div.imageWrapper > picture > picture > img.cardImgTop
Siemens' AI powered Nanjing facility named World Economic Forum Global Lighthou… div.imageWrapper > picture > picture > img.cardImgTop
div.imageWrapper > picture > picture > img.cardImgTop div.imageWrapper > picture > picture > img.cardImgTop
S-Bane-Copenhagen div.imageWrapper > picture > picture > img.cardImgTop
view on a train from a helicopter perspective div.imageWrapper > picture > picture > img.cardImgTop

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
●Minify JavaScript
●Avoid long main-thread tasks 20 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 170 ms
●Server Backend Latencies 510 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 90 ms
●Avoid large layout shifts 4 layout shifts found
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
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.

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
Notice of the 2026 Shareholders’ Meeting, Siemens, S.A. div.de-banner__content > div.de-banner__text-wrapper > div.de-banner__text > h3.de-banner__title

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
div.container > div.de-banner__content > div.de-banner__image-wrapper > img.de-banner__image div.container > div.de-banner__content > div.de-banner__image-wrapper > img.de-banner__image
div.imageWrapper > picture > picture > img.cardImgTop div.imageWrapper > picture > picture > img.cardImgTop

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
div.xd-header-top > div.xd-header-addons > div.xd-header-profile > a#xd-header-profile-signin div.xd-header-top > div.xd-header-addons > div.xd-header-profile > a#xd-header-profile-signin

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
●`[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
●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
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●`[lang]` attributes have a valid value
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●ARIA IDs are unique
●Uses ARIA roles only on compatible elements
●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
○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
○Form elements have associated labels
○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
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○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.
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○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.
96

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
div.container > div.de-banner__content > div.de-banner__image-wrapper > img.de-banner__image div.container > div.de-banner__content > div.de-banner__image-wrapper > img.de-banner__image
/siemens-disw-assets/public/2Z7LYOEayHuJHzbfiXAzRD/en-US/...96 x 6496 x 64144 x 96

General

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
www.siemens.com/lib/helpers/esm/index.module.js
static.sw.cdn.siemens.com/xd/xd-utils/1.x/xd-utils.min.jsstatic.sw.cdn.siemens.com/xd/xd-utils/1.x/xd-utils.min.js.map
●Uses HTTPS
●Avoids deprecated APIs
●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
●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
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Use a strong HSTS policy
○Mitigate clickjacking with XFO or CSP
83

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 destinationLink Text
www.siemens.com/en-us/company/insights/anybotics-autonomous-mobile-robot-ai/Read more
/17si5cpawjzf/2z2WOgvaWZPS1nGEubf8Ve/7816ffaed036616f0415...Learn more
www.siemens.com/en-us/company/infrastructure/Read more
www.siemens.com/en-us/products/sigreen/Read more
/en-us/company/insights/digital-transformation-siemens-xc...Read more
www.siemens.com/en-us/products/sigreen/Read more
/en-us/company/insights/digital-transformation-siemens-xc...Read more
www.siemens.com/en-us/products/building-x/Learn more
www.siemens.com/en-us/products/electrification-x/Learn more
www.siemens.com/en-us/products/simcenter/mechanical-simulation/femap/Learn more
www.siemens.com/en-us/products/gridscale-x/Learn more
xcelerator.siemens.com/global/en/all-offerings/solutions/m/movilitas-cloud.htmlLearn more
www.siemens.com/en-us/products/cad-cam-software/Learn more
xcelerator.siemens.com/global/en/all-offerings/products/s/sigrid.htmlLearn more
www.siemens.com/en-us/products/designcenter/solid-edge/solid-edge-x/Learn more
www.siemens.com/en-us/products/avasis-teamcenter-medical-device-solution-tc-mds/Learn more

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.container > div.de-banner__content > div.de-banner__image-wrapper > img.de-banner__image div.container > div.de-banner__content > div.de-banner__image-wrapper > img.de-banner__image
div.imageWrapper > picture > picture > img.cardImgTop div.imageWrapper > picture > picture > img.cardImgTop

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

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