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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.

53

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
pop-i.de/img/slider/hamburg-sunset_small.jpg0.0 ms306.4 KiB
pop-i.de/img/slider/hamburg-hafen_small.jpg0.0 ms225.6 KiB
pop-i.de/img/slider/ranzel2019_small.jpg0.0 ms222.4 KiB
pop-i.de/img/slider/hamburg-moewen_small.jpg0.0 ms209.0 KiB
pop-i.de/img/products/cloud.jpg0.0 ms197.8 KiB
pop-i.de/img/products/housing.jpg0.0 ms167.6 KiB
pop-i.de/img/products/network.jpg0.0 ms113.7 KiB
pop-i.de/img/slider/cisco-router_small.jpg0.0 ms110.8 KiB
pop-i.de/img/products/security.jpg0.0 ms104.6 KiB
pop-i.de/img/products/access.jpg0.0 ms99.8 KiB
pop-i.de/webfonts/fa-solid-900.woff20.0 ms78.2 KiB
pop-i.de/img/products/hosting.jpg0.0 ms75.5 KiB
pop-i.de/css/materialdesignicons.min.css0.0 ms47.6 KiB
pop-i.de/img/products/services.jpg0.0 ms39.9 KiB
pop-i.de/img/clients/all4labels.jpg0.0 ms33.0 KiB
pop-i.de/js/jquery-3.3.1.min.js0.0 ms30.6 KiB
pop-i.de/css/bootstrap.min.css?v=1.10.0 ms20.2 KiB
pop-i.de/img/clients/starcar_v2.png0.0 ms19.2 KiB
pop-i.de/img/clients/dvinci_RGB_logo_blue.png0.0 ms17.4 KiB
pop-i.de/img/cisco-cert/popi_cisco_clean.png0.0 ms15.6 KiB
pop-i.de/img/clients/doerner_v2.jpg0.0 ms15.6 KiB
pop-i.de/img/clients/logo-crif.png0.0 ms14.8 KiB
pop-i.de/css/fontawesome-all.min.css0.0 ms12.3 KiB
pop-i.de/img/clients/steinway_v2.png0.0 ms11.2 KiB
pop-i.de/fonts/FuturaLT.woff20.0 ms11.1 KiB
pop-i.de/js/bootstrap.min.js0.0 ms10.6 KiB
pop-i.de/img/umweltpartnerschaft.png0.0 ms9.7 KiB
pop-i.de/img/clients/team-logo-rgb.png0.0 ms8.7 KiB
pop-i.de/css/style.blue.min.css?v=1.10.0 ms8.5 KiB
pop-i.de/img/pop-interactive_logo.svg0.0 ms7.7 KiB
pop-i.de/js/owl.carousel.min.js?v=1.10.0 ms7.2 KiB
pop-i.de/css/animate.min.css0.0 ms4.6 KiB
pop-i.de/img/clients/steinberg.jpg0.0 ms3.9 KiB
pop-i.de/img/clients/pentax.png0.0 ms3.9 KiB
pop-i.de/js/front.min.js?v=1.00.0 ms3.0 KiB
pop-i.de/css/custom.min.css?v=1.40.0 ms2.9 KiB
pop-i.de/img/clients/starfinanz_v2.gif0.0 ms2.9 KiB
pop-i.de/css/owl.carousel.min.css0.0 ms1.4 KiB
pop-i.de/css/owl.theme.min.css0.0 ms1.3 KiB

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.633295] map[node:map[boundingRect:map[bottom:1213 height:464 left:0 right:412 top:749 width:412] lhId:page-18-SECTION nodeLabel:Am Anfang eines Unternehmens steht immer eine Vision. Unsere stand und steht he… path:1,HTML,1,BODY,0,DIV,3,SECTION selector:body > div#all > section#intro snippet:<section id="intro" class="bar big background-white"> type:node] score:0.633274 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:670 height:180 left:432 right:612 top:490 width:180] lhId:page-16-IMG nodeLabel:tbody > tr > td > img path:1,HTML,1,BODY,0,DIV,2,SPAN,0,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,TABLE,0,TBODY,0,TR,0,TD,0,IMG selector:tbody > tr > td > img snippet:<img src="/img/cisco-cert/popi_cisco_clean.png" width="180px"> type:node]] map[cause:Web font extra:map[type:url value:https://pop-i.de/fonts/FuturaLT.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:31 height:21 left:15 right:122 top:10 width:107] lhId:page-21-SPAN nodeLabel: path:1,HTML,1,BODY,0,DIV,0,HEADER,0,DIV,0,DIV,0,DIV,0,DIV,2,SPAN selector:div.container > div.row > div.col-md-6 > span.title-logo snippet:<span class="title-logo visible-xs"> type:node] score:2.1e-05 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:4860 height:51 left:1372 right:1523 top:4809 width:151] lhId:page-22-IMG nodeLabel:Steinberg Media Technologies GmbH path:1,HTML,1,BODY,0,DIV,5,DIV,0,DIV,0,DIV,1,UL,0,DIV,0,DIV,7,DIV,0,LI,0,A,0,IMG selector:div.owl-item > li.item > a > img.img-responsive snippet:<img src="/img/clients/steinberg.jpg" alt="Steinberg Media Technologies GmbH" class="img-responsive"> type:node]] map[cause:Web font extra:map[type:url value:https://pop-i.de/webfonts/fa-solid-900.woff2]]] type:subitems]]]

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.

URLEst Savings
pop-i.de/webfonts/fa-solid-900.woff275 ms
pop-i.de/fonts/FuturaLT.woff235 ms

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
Sicherer Hafen für Ihre IT-Ressourcen Multi-redundantes Highspeed-Netzwerk für … div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > div.item
pop-i.de/img/slider/hamburg-sunset_small.jpg305.5 KiB175.8 KiB
Natürlich verbunden durch ökologisch angepasste Technologien div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > div.item
pop-i.de/img/slider/hamburg-moewen_small.jpg208.1 KiB162.8 KiB
Herzlich willkommen bei pop-interactive Ihr Internet Full Service Provider div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > div.item
pop-i.de/img/slider/hamburg-hafen_small.jpg224.7 KiB162.7 KiB
1775 Bäume. Unser Beitrag für einen wirksamen Klimaschutz. div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > div.item
pop-i.de/img/slider/ranzel2019_small.jpg221.5 KiB150.0 KiB
div > a > div.col-lg-3 > div.display-item div > a > div.col-lg-3 > div.display-item
pop-i.de/img/products/housing.jpg166.7 KiB108.8 KiB
div > a > div.col-lg-3 > div.display-item div > a > div.col-lg-3 > div.display-item
pop-i.de/img/products/network.jpg112.7 KiB71.7 KiB
div > a > div.col-lg-3 > div.display-item div > a > div.col-lg-3 > div.display-item
pop-i.de/img/products/security.jpg103.7 KiB62.7 KiB
div > a > div.col-lg-3 > div.display-item div > a > div.col-lg-3 > div.display-item
pop-i.de/img/products/access.jpg98.8 KiB57.8 KiB
Select Provider Select Integrator Core Security Solution Specialized div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > div.item
pop-i.de/img/slider/cisco-router_small.jpg109.9 KiB50.6 KiB
div > a > div.col-lg-3 > div.display-item div > a > div.col-lg-3 > div.display-item
pop-i.de/img/products/cloud.jpg196.9 KiB46.9 KiB
div > a > div.col-lg-3 > div.display-item div > a > div.col-lg-3 > div.display-item
pop-i.de/img/products/hosting.jpg74.6 KiB33.6 KiB
All4Labels Group GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/all4labels.jpg32.1 KiB28.4 KiB
d.vinci HR-Systems GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/dvinci_RGB_logo_blue.png16.5 KiB16.2 KiB
Starcar Autovermietung GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/starcar_v2.png18.2 KiB16.1 KiB
OTTO DÖRNER GmbH & Co. KG div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/doerner_v2.jpg14.7 KiB11.9 KiB
Steinway & Sons div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/steinway_v2.png10.2 KiB9.6 KiB
tbody > tr > td > img tbody > tr > td > img
pop-i.de/img/cisco-cert/popi_cisco_clean.png14.7 KiB8.9 KiB
CRIF GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/logo-crif.png13.9 KiB8.8 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-2-DIV
nodeLabel: Herzlich willkommen bei pop-interactive Ihr Internet Full Service Provider
path: 1,HTML,1,BODY,0,DIV,2,SPAN,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV
selector: div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > div.item
snippet: <div class="item" style="background-image: url('/img/slider/hamburg-hafen_small.jpg');">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
pop-i.de/http/1.1
pop-i.de/css/materialdesignicons.min.csshttp/1.1
pop-i.de/css/fontawesome-all.min.csshttp/1.1
pop-i.de/css/bootstrap.min.css?v=1.1http/1.1
pop-i.de/css/animate.min.csshttp/1.1
pop-i.de/css/style.blue.min.css?v=1.1http/1.1
pop-i.de/css/custom.min.css?v=1.4http/1.1
pop-i.de/css/owl.carousel.min.csshttp/1.1
pop-i.de/css/owl.theme.min.csshttp/1.1
pop-i.de/img/pop-interactive_logo.svghttp/1.1
pop-i.de/img/umweltpartnerschaft.pnghttp/1.1
pop-i.de/img/cisco-cert/popi_cisco_clean.pnghttp/1.1
pop-i.de/img/clients/all4labels.jpghttp/1.1
pop-i.de/img/clients/logo-crif.pnghttp/1.1
pop-i.de/img/clients/doerner_v2.jpghttp/1.1
pop-i.de/img/clients/dvinci_RGB_logo_blue.pnghttp/1.1
pop-i.de/img/clients/pentax.pnghttp/1.1
pop-i.de/img/clients/starcar_v2.pnghttp/1.1
pop-i.de/img/clients/starfinanz_v2.gifhttp/1.1
pop-i.de/img/clients/steinberg.jpghttp/1.1
pop-i.de/img/clients/steinway_v2.pnghttp/1.1
pop-i.de/img/clients/team-logo-rgb.pnghttp/1.1
pop-i.de/js/jquery-3.3.1.min.jshttp/1.1
pop-i.de/js/bootstrap.min.jshttp/1.1
pop-i.de/js/front.min.js?v=1.0http/1.1
pop-i.de/js/owl.carousel.min.js?v=1.1http/1.1
pop-i.de/img/products/access.jpghttp/1.1
pop-i.de/img/products/network.jpghttp/1.1
pop-i.de/img/products/cloud.jpghttp/1.1
pop-i.de/img/products/housing.jpghttp/1.1
pop-i.de/img/products/hosting.jpghttp/1.1
pop-i.de/img/products/security.jpghttp/1.1
pop-i.de/img/products/services.jpghttp/1.1
pop-i.de/webfonts/fa-solid-900.woff2http/1.1
pop-i.de/fonts/FuturaLT.woff2http/1.1
pop-i.de/img/slider/hamburg-hafen_small.jpghttp/1.1
pop-i.de/img/slider/cisco-router_small.jpghttp/1.1
pop-i.de/img/slider/hamburg-sunset_small.jpghttp/1.1
pop-i.de/img/slider/hamburg-moewen_small.jpghttp/1.1
pop-i.de/img/slider/ranzel2019_small.jpghttp/1.1
pop-i.de/favicon.icohttp/1.1

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
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
pop-i.de/css/owl.theme.min.css1.3 KiB151 ms
pop-i.de/css/style.blue.min.css?v=1.18.5 KiB601 ms
pop-i.de/css/custom.min.css?v=1.42.9 KiB451 ms
pop-i.de/css/owl.carousel.min.css1.4 KiB151 ms
pop-i.de/css/animate.min.css4.6 KiB601 ms
pop-i.de/css/bootstrap.min.css?v=1.120.2 KiB1.1 s
pop-i.de/css/materialdesignicons.min.css47.6 KiB1.2 s
pop-i.de/css/fontawesome-all.min.css12.3 KiB751 ms

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

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Am Anfang eines Unternehmens steht immer eine Vision. Unsere stand und steht he… body > div#all > section#intro
0.633
div.container > div.row > div.col-md-6 > span.title-logo
0.000

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

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: 450 ms 76.3 KiB
URLTransfer SizeEst Savings
pop-i.de/css/materialdesignicons.min.css46.7 KiB46.7 KiB
pop-i.de/css/bootstrap.min.css?v=1.119.2 KiB18.3 KiB
pop-i.de/css/fontawesome-all.min.css11.4 KiB11.2 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
d.vinci HR-Systems GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/dvinci_RGB_logo_blue.png
tbody > tr > td > img tbody > tr > td > img
pop-i.de/img/cisco-cert/popi_cisco_clean.png
Steinway & Sons div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/steinway_v2.png
OTTO DÖRNER GmbH & Co. KG div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/doerner_v2.jpg
Starcar Autovermietung GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/starcar_v2.png
CRIF GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/logo-crif.png
logo div.navbar-header > div.navbar-banners > a.navbar-brand > img#logo-small
pop-i.de/img/pop-interactive_logo.svg
Star Finanz - Software Entwicklungs und Vertriebs GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/starfinanz_v2.gif
All4Labels Group GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/all4labels.jpg
team SE div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/team-logo-rgb.png
Steinberg Media Technologies GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/steinberg.jpg
Pentax Europe GmbH div.owl-item > li.item > a > img.img-responsive
pop-i.de/img/clients/pentax.png

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

●Document request latency
●Optimize DOM size
●Forced reflow
●LCP breakdown
●Optimize viewport for mobile
●Max Potential First Input Delay 60 ms
●Minify CSS
●Minify JavaScript
●Reduce unused JavaScript
●Avoids enormous network payloads Total size was 2,285 KiB
●JavaScript execution time 0.1 s
●Minimizes main-thread work 0.9 s
●Avoid long main-thread tasks 3 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 40 ms
●Server Backend Latencies 0 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 40 ms
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
61

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
Internet for business footer#footer > div.container > div.col-md-4 > p
pop-interactive GmbH Wendenstraße 408 20537 Hamburg footer#footer > div.container > div.col-md-4 > p
pop-interactive GmbH div.container > div.col-md-4 > p > strong
Geschäftsführer: Matthias Schlichtenberger, Gerald Krause footer#footer > div.container > div.col-md-4 > p
Zur Kontakt Seite footer#footer > div.container > div.col-md-4 > a.btn

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
pop-interactive footer#footer > div.container > div.col-md-4 > h4

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
tbody > tr > td > img tbody > tr > td > 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
div.col-md-6 > span.title-logo > b > a.white div.col-md-6 > span.title-logo > b > a.white
div.col-md-6 > span.title-logo > b > a.white div.col-md-6 > span.title-logo > b > a.white

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
All4Labels Group GmbH div.container > div.row > div.col-md-12 > ul.owl-carousel

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Select Provider tr > td.hidden- > list > li
Select Integrator tr > td.hidden- > list > li
Core Security Solution Specialized tr > td.hidden- > list > li
All4Labels Group GmbH div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item
CRIF GmbH div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item
OTTO DÖRNER GmbH & Co. KG div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item
d.vinci HR-Systems GmbH div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item
Pentax Europe GmbH div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item
Starcar Autovermietung GmbH div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item
Star Finanz - Software Entwicklungs und Vertriebs GmbH div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item
Steinberg Media Technologies GmbH div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item
Steinway & Sons div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item
team SE div.owl-wrapper-outer > div.owl-wrapper > div.owl-item > li.item

These are opportunities to improve the experience of reading tabular or list data using 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Impressum footer#footer > div.container > div.col-md-4 > a
Datenschutz footer#footer > div.container > div.col-md-4 > a

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These items highlight common accessibility best practices.

○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-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●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.
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
●Deprecated ARIA roles were not used
○`[accesskey]` values are unique
○`[aria-*]` attributes match their roles
○`button`, `link`, and `menuitem` elements have accessible names
○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
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements use only permitted 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
○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
○`[aria-*]` attributes have valid values
○`[aria-*]` attributes are valid and not misspelled
○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
○Form elements have associated labels
○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.
○No element has a `[tabindex]` value greater than 0
○`<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.
○Identical links have the same purpose.
○Elements with visible text labels have matching accessible names.
○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 display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
tbody > tr > td > img tbody > tr > td > img
pop-i.de/img/cisco-cert/popi_cisco_clean.png180 x 500 (0.36)500 x 500 (1.00)
●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
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Ensure CSP is effective against XSS attacks
○Use a strong HSTS policy
○Ensure proper origin isolation with COOP
○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.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
tbody > tr > td > img tbody > tr > td > 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 have descriptive text
●Links are crawlable
●Document has a valid `hreflang`
○Document has a valid `rel=canonical`

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