Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

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.

Request	Cache TTL	Transfer Size
code.etracker.com/code/e.js	14400.0 s	31.5 KiB
www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/gfilibs-5579434-17.js	432000.0 s	137.6 KiB
/blueprint/servlet/resource/themes/ihk24-2022/css/ihk24-2...	432000.0 s	96.1 KiB
/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-20...	432000.0 s	73.9 KiB
/blueprint/servlet/resource/crblob/5579336/ad109ffb720276...	432000.0 s	70.8 KiB
/blueprint/servlet/resource/themes/ihk24-2022/js/ihk-find...	432000.0 s	56.6 KiB
/blueprint/servlet/resource/crblob/5579334/57a3d6896f0ad5...	432000.0 s	40.4 KiB
/blueprint/servlet/resource/crblob/5579224/11527ab20527fe...	432000.0 s	35.6 KiB
/blueprint/servlet/resource/crblob/5579398/c361577905af72...	432000.0 s	33.9 KiB
/blueprint/servlet/resource/crblob/5579390/dae881d202bf63...	432000.0 s	33.9 KiB
/blueprint/servlet/resource/crblob/5579350/4b6d351066c910...	432000.0 s	31.4 KiB
/blueprint/servlet/resource/crblob/5579384/8bba3dafc67ddc...	432000.0 s	28.3 KiB
/blueprint/servlet/resource/crblob/5579376/e7f259ff924920...	432000.0 s	28.3 KiB
/blueprint/servlet/resource/crblob/5579400/0f6202a6bd6c5a...	432000.0 s	28.3 KiB
/blueprint/servlet/resource/crblob/5579392/265925f64acbdf...	432000.0 s	28.2 KiB
/blueprint/servlet/resource/crblob/5579368/8489109afa2827...	432000.0 s	27.7 KiB
/blueprint/servlet/resource/crblob/5579352/23aeda9396f229...	432000.0 s	26.1 KiB
/blueprint/servlet/resource/crblob/5579360/6705f2dc67941c...	432000.0 s	26.0 KiB
/blueprint/servlet/resource/crblob/5579344/c9d20f25374ac3...	432000.0 s	10.3 KiB
/blueprint/servlet/resource/crblob/5245162/852ad7e93b0750...	432000.0 s	9.0 KiB
/blueprint/servlet/resource/system/design/ihk24/css/css/p...	432000.0 s	7.8 KiB
www.ihk.de/blueprint/servlet/resource/system/defaults/patch-4179742-15.js	432000.0 s	7.3 KiB
www.ihk.de/blueprint/servlet/resource/sites/ihkde/CSS_individuell-5484982-4.css	432000.0 s	7.2 KiB
/blueprint/servlet/resource/system/design/ihk24/css/css/p...	432000.0 s	7.1 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.

URL	Est Savings
/blueprint/servlet/resource/crblob/5579334/57a3d6896f0ad5...	125 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:26.868 source:map[column:15 line:222 type:source-location url:https://ihk24.epccm19.com/app.js?apiKey=1ea1dd88e74e9deb745262fb3105eb9babfd935ba151be83&domain=f82a90a 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:3.126 source:map[column:34714 line:41 type:source-location url:https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-2022-chunked-5579440-24.js urlProvider:network]] map[reflowTime:0.278 source:map[column:792 line:62 type:source-location url:https://ihk24.epccm19.com/app.js?apiKey=1ea1dd88e74e9deb745262fb3105eb9babfd935ba151be83&domain=f82a90a urlProvider:network]] map[reflowTime:26.59 source:map[column:868 line:84 type:source-location url:https://ihk24.epccm19.com/app.js?apiKey=1ea1dd88e74e9deb745262fb3105eb9babfd935ba151be83&domain=f82a90a urlProvider:network]] map[reflowTime:0.334 source:map[column:50126 line:37 type:source-location url:https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-2022-chunked-5579440-24.js urlProvider:network]] map[reflowTime:0.207 source:map[column:50184 line:37 type:source-location url:https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-2022-chunked-5579440-24.js urlProvider:network]] map[reflowTime:0.182 source:map[column:50248 line:37 type:source-location url:https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-2022-chunked-5579440-24.js urlProvider:network]] map[reflowTime:0.129 source:map[column:49430 line:37 type:source-location url:https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-2022-chunked-5579440-24.js urlProvider:network]] map[reflowTime:0.089 source:map[column:49408 line:37 type:source-location url:https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-2022-chunked-5579440-24.js urlProvider:network]] map[reflowTime:0.337 source:map[column:51184 line:37 type:source-location url:https://www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-2022-chunked-5579440-24.js 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: IHK Auswahldialog schließen

path: 1,HTML,1,BODY,0,DIV,2,DIV,1,MAIN,0,SECTION,1,DIV,0,DIV,0,DIV,0,DIV

selector: div.container > div.row > div.col > div.map

snippet: <div class="map">

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.

URL	Protocol
www.ihk.de/	http/1.1
/blueprint/servlet/resource/crblob/5579336/ad109ffb720276...	http/1.1
/blueprint/servlet/resource/crblob/5579344/c9d20f25374ac3...	http/1.1
/blueprint/servlet/resource/crblob/5579352/23aeda9396f229...	http/1.1
/blueprint/servlet/resource/crblob/5579360/6705f2dc67941c...	http/1.1
/blueprint/servlet/resource/crblob/5579368/8489109afa2827...	http/1.1
/blueprint/servlet/resource/crblob/5579376/e7f259ff924920...	http/1.1
/blueprint/servlet/resource/crblob/5579384/8bba3dafc67ddc...	http/1.1
/blueprint/servlet/resource/crblob/5579392/265925f64acbdf...	http/1.1
/blueprint/servlet/resource/crblob/5579400/0f6202a6bd6c5a...	http/1.1
/blueprint/servlet/resource/themes/ihk24-2022/css/ihk24-2...	http/1.1
/blueprint/servlet/resource/system/design/ihk24/css/css/p...	http/1.1
www.ihk.de/blueprint/servlet/resource/sites/ihkde/CSS_individuell-5484982-4.css	http/1.1
/blueprint/servlet/resource/system/design/ihk24/css/css/p...	http/1.1
/blueprint/servlet/resource/crblob/5245162/852ad7e93b0750...	http/1.1
www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/gfilibs-5579434-17.js	http/1.1
/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-20...	http/1.1
/blueprint/servlet/resource/themes/ihk24-2022/js/ihk-find...	http/1.1
www.ihk.de/blueprint/servlet/resource/system/defaults/patch-4179742-15.js	http/1.1
/blueprint/servlet/resource/crblob/5579224/11527ab20527fe...	http/1.1
/blueprint/servlet/resource/crblob/5579334/57a3d6896f0ad5...	http/1.1
/blueprint/servlet/resource/crblob/5579350/4b6d351066c910...	http/1.1
/blueprint/servlet/resource/crblob/5579390/dae881d202bf63...	http/1.1
www.ihk.de/blueprint/servlet/serviceport/ihk-list/all	http/1.1
/blueprint/servlet/resource/blob/5246320/1e8a9477f7b6de2f...	http/1.1
www.ihk.de/blueprint/servlet/serviceport/ihk-list/communities	http/1.1
/blueprint/servlet/resource/crblob/5579398/c361577905af72...	http/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

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

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.

URL	Transfer Size	Duration
/app.js?apiKey=1ea1dd88e74e9deb745262fb3105eb9babfd935ba1...	30.8 KiB	101 ms

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 272 ms

URL	Time Spent
ihk.de/	272 ms
www.ihk.de/	0.0 ms

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.

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: 110 ms 85.9 KiB

URL	Transfer Size	Est Savings
/blueprint/servlet/resource/themes/ihk24-2022/css/ihk24-2...	89.1 KiB	85.9 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: 240 ms 156.3 KiB

URL	Transfer Size	Est Savings
www.ihk.de/blueprint/servlet/resource/themes/ihk24-2022/js/gfilibs-5579434-17.js	130.6 KiB	90.9 KiB
/blueprint/servlet/resource/themes/ihk24-2022/js/ihk24-20...	66.9 KiB	40.3 KiB
/blueprint/servlet/resource/themes/ihk24-2022/js/ihk-find...	49.6 KiB	25.1 KiB

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 2.3 KiB

URL	Transfer Size	Est Savings
/blueprint/servlet/resource/system/design/ihk24/css/css/p...	7.8 KiB	2.3 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
Startseite `div#ihk-finder > header.page-header > a.logo > img#logo-infobar`	/blueprint/servlet/resource/crblob/5245162/852ad7e93b0750...

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

●Time to Interactive 2.4 s

●Layout shift culprits

●Optimize DOM size

●Improve image delivery

●LCP breakdown

●Optimize viewport for mobile

●Minify JavaScript

●Avoids enormous network payloads Total size was 1,255 KiB

●JavaScript execution time 0.4 s

●Minimizes main-thread work 1.0 s

●Avoid long main-thread tasks 5 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 90 ms

●Server Backend Latencies 40 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 170 ms

●Avoid large layout shifts 3 layout shifts found

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

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

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.col > form.ihk-finder > span.twitter-typeahead > input.tt-hint `div.col > form.ihk-finder > span.twitter-typeahead > input.tt-hint`

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 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
Gebärdensprache `div#ihk-finder > footer.finder-footer > nav > li`
Leichte Sprache `div#ihk-finder > footer.finder-footer > nav > li`
Erklärung zur Barrierefreiheit `div#ihk-finder > footer.finder-footer > nav > li`

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

●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

●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.

●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

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

○`[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 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.

○`<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.

Best Practices

Trust and Safety

Users are mistrustful of or confused by sites that request their location without context. Consider tying the request to a user action instead. Learn more about the geolocation permission.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source
/blueprint/servlet/resource/themes/ihk24-2022/js/ihk-find... line 31, col 45230

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●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

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

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

●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`