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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.

67

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.

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
/wp-content/uploads/fusion-gfonts/UcC73FwrK3iLTeHuS_nVMrM...35 ms

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:46.625 source:map[column:37926 line:2 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:0.695 source:map[column:50335 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.3 source:map[column:50393 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.318 source:map[column:50457 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.157 source:map[column:85575 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:29.375 source:map[column:83946 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.462 source:map[column:51395 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.062 source:map[column:49637 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.154 source:map[column:49615 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.505 source:map[column:5552 line:18 type:source-location url:https://conengagroup.com/wp-content/plugins/fusion-builder/assets/js/min/library/ScrollTrigger.js?ver=3.15.6 urlProvider:network]] map[reflowTime:0.067 source:map[column:818 line:0 type:source-location url:https://conengagroup.com/wp-content/themes/Avada/includes/lib/assets/min/js/general/fusion-responsive-typography.js?ver=3.15.6 urlProvider:network]] map[reflowTime:0.368 source:map[column:1079 line:0 type:source-location url:https://conengagroup.com/wp-content/themes/Avada/includes/lib/assets/min/js/general/fusion-responsive-typography.js?ver=3.15.6 urlProvider:network]] map[reflowTime:27.663 source:map[column:49615 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.431 source:map[column:50335 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.231 source:map[column:50393 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.204 source:map[column:50457 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.096 source:map[column:49637 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.352 source:map[column:51395 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:6.753 source:map[column:4544 line:0 type:source-location url:https://conengagroup.com/wp-content/themes/Avada/includes/lib/assets/min/js/library/swiper.js?ver=11.2.5 urlProvider:network]] map[reflowTime:5.206 source:map[column:10214 line:0 type:source-location url:https://conengagroup.com/wp-content/themes/Avada/includes/lib/assets/min/js/library/swiper.js?ver=11.2.5 urlProvider:network]] map[reflowTime:5.484 source:map[column:16035 line:0 type:source-location url:https://conengagroup.com/wp-content/themes/Avada/includes/lib/assets/min/js/library/swiper.js?ver=11.2.5 urlProvider:network]] map[reflowTime:0.636 source:map[column:1547 line:294 type:source-location url:https://conengagroup.com/en/ urlProvider:network]] map[reflowTime:0.157 source:map[column:1593 line:294 type:source-location url:https://conengagroup.com/en/ urlProvider:network]] map[reflowTime:15.809 source:map[column:83946 line:1 type:source-location url:https://conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]]]

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-0-DIV
nodeLabel: We do it. Science meets hands-on expertise – for the future of your technical …
path: 1,HTML,1,BODY,2,DIV,0,DIV,3,MAIN,0,DIV,0,SECTION,0,DIV,3,DIV,0,DIV
selector: section#content > div#post-13968 > div.post-content > div.fusion-fullwidth
snippet: <div class="fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container …" style="--link_hover_color: var(--awb-color5); --link_color: var(--awb-color5);">

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
/wp-content/uploads/fusion-styles/810592477223f18d0e1efd7...249.0 KiB200 ms
/wp-content/plugins/sitepress-multilingual-cms/templates/...0 B
conengagroup.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.10 B
/wp-content/plugins/sitepress-multilingual-cms/dist/js/br...0 B
conengagroup.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.10 B

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
Bioenergie Kufstein: Nachhaltige Energieeffizienz div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a > img.attachment-full
/wp-content/uploads/2025/11/HK_46.25_conenga_group_cover_...625.8 KiB612.9 KiB
Blogheader_data_analysis div.fusion-image-element > span.fusion-imageframe > a.fusion-no-lightbox > img.img-responsive
/wp-content/uploads/2026/04/Header_linkedIN_blog_etc-1-Bl...587.8 KiB562.3 KiB
CONENGA Group Logo div.fusion-row > div.fusion-logo > a.fusion-logo-link > img.fusion-standard-logo
/wp-content/uploads/2024/11/Conenga-Group_Logo_RGB_72dpi-...8.1 KiB4.7 KiB

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.0 s
URLTime Spent
conengagroup.com/2.0 s
conengagroup.com/en/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

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: 200 ms 225.8 KiB
URLTransfer SizeEst Savings
/wp-content/uploads/fusion-styles/810592477223f18d0e1efd7...248.2 KiB225.8 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: 120 ms 223.4 KiB
URLTransfer SizeEst Savings
/wp-content/themes/Avada/includes/lib/assets/min/js/libra...50.7 KiB49.5 KiB
matomo.conengagroup.com/matomo.js66.4 KiB37.2 KiB
/wp-content/plugins/sitepress-multilingual-cms/dist/js/br...57.8 KiB29.4 KiB
/wp-content/plugins/sitepress-multilingual-cms/dist/js/br...57.8 KiB28.6 KiB
/wp-content/themes/Avada/includes/lib/assets/min/js/libra...50.7 KiB28.6 KiB
/wp-content/themes/Avada/includes/lib/assets/min/js/libra...28.9 KiB25.2 KiB
/wp-content/themes/Avada/includes/lib/assets/min/js/libra...28.9 KiB24.8 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
/wp-content/uploads/2026/06/Header_linkedIN_blog_etc-1-me...730.9 KiB
/wp-content/uploads/2025/11/HK_46.25_conenga_group_cover_...627.2 KiB
/wp-content/uploads/2026/04/Header_linkedIN_blog_etc-1-Bl...589.2 KiB
conengagroup.com/wp-content/uploads/2026/03/Wirbelschicht_zoom-scaled.png495.3 KiB
conengagroup.com/wp-content/uploads/2026/02/BCS_conenga_group_waben_small-1.png386.5 KiB
/wp-content/uploads/2026/06/Header_blog_ergebnisse_biofiz...356.7 KiB
conengagroup.com/wp-content/uploads/2025/10/forschung_conenga_group_sketch.png332.3 KiB
/wp-content/uploads/fusion-styles/810592477223f18d0e1efd7...249.0 KiB
/wp-content/uploads/fusion-styles/f40bb010c6ca37fe9a61d8d...248.7 KiB
/wp-content/uploads/2024/02/ohne-Sicherheitseinrichtung-e...236.1 KiB

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

●Use efficient cache lifetimes
●Layout shift culprits
●Document request latency
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 60 ms
●Minify CSS
●Minify JavaScript
●JavaScript execution time 0.5 s
●Minimizes main-thread work 1.9 s
●Avoid long main-thread tasks 5 long tasks found
●Avoid non-composited animations 1 animated element found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 40 ms
●Server Backend Latencies 180 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 40 ms
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
○User Timing marks and measures
87

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
Explore all our service areas and products: div.fusion-layout-column > div.fusion-column-wrapper > div.fusion-text > p
CONENGA works on its own initiative in close coordination with the plant person… div.awb-quote-content > p > span.TextRun > span.NormalTextRun
high acceptance of the optimized control of the EPOC® Boiler. div.awb-quote-content > p > span.TextRun > span.NormalTextRun
Maik Hawrylak div.review > div.author > span.company-name > strong
Head of Energy Supply, Egger Wismar div.review > div.author > span.company-name > span
Read the latest CONENGA blog posts here: div.fusion-layout-column > div.fusion-column-wrapper > div.fusion-text > h3.fusion-responsive-typography-calculated
Unsere Kunden div.fusion-column-content-centered > div.fusion-column-content > div.fusion-title > h3.fusion-title-heading
Auhofstraße 1/10, 1130 Vienna div.textwidget > ul.fusion-checklist > li.fusion-li-item > div.fusion-li-item-content
office@conengagroup.com ul.fusion-checklist > li.fusion-li-item > div.fusion-li-item-content > a
+43 1 23 500 32 div.textwidget > ul.fusion-checklist > li.fusion-li-item > div.fusion-li-item-content
+43 1 23 500 32–99 div.textwidget > ul.fusion-checklist > li.fusion-li-item > div.fusion-li-item-content
>  Imprint div.textwidget > ul > li > a
>  Privacy Policy div.textwidget > ul > li > a
COPYRIGHT 2026 CONENGA Group GmbH div.fusion-row > div.fusion-copyright-content > div.fusion-copyright-notice > div

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
Potential studies div.col > div.heading > a.heading-link > h6.content-box-heading

These are opportunities to improve keyboard navigation in your application.

Names and labels

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.fusion-builder-row > div.fusion-layout-column > span.fusion-column-inner-bg > a.fusion-column-anchor div.fusion-builder-row > div.fusion-layout-column > span.fusion-column-inner-bg > a.fusion-column-anchor
div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a
div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a
div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a
div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a
div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a
div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a div.swiper-slide > div.fusion-carousel-item-wrapper > div.fusion-image-wrapper > a

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Testimonial Pagination div.fusion-column-wrapper > div.fusion-testimonials > div#fusion-testimonials-1 > a.activeSlide
Testimonial Pagination div.fusion-column-wrapper > div.fusion-testimonials > div#fusion-testimonials-1 > a
Testimonial Pagination div.fusion-column-wrapper > div.fusion-testimonials > div#fusion-testimonials-1 > a
Testimonial Pagination div.fusion-column-wrapper > div.fusion-testimonials > div#fusion-testimonials-1 > a
Testimonial Pagination div.fusion-column-wrapper > div.fusion-testimonials > div#fusion-testimonials-1 > a
Testimonial Pagination div.fusion-column-wrapper > div.fusion-testimonials > div#fusion-testimonials-1 > a
>  Imprint div.textwidget > ul > li > a
>  Privacy Policy div.textwidget > ul > li > a

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-*]` 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
●Image elements have `[alt]` attributes
●`[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
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●`[lang]` attributes have a valid value
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
○`[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 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
○Buttons have an accessible name
○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.
○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.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○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.
100

Best Practices

●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
●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
●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
100

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.

○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
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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