Spain · Madrid Completed: Apr 22, 2026 21:43 UTCMobile 375 × 812
Desktop 1440 × 900
Score: 69 / 100
Based on 8 categories, 0 sections
Decent speed, but optimizing further could improve engagement.
Several missing protections leave your users and data exposed.
Several issues make your site difficult for assistive technology users.
Solid SEO basics — a few optimizations could boost rankings.
Solid infrastructure — fast server responses across the board.
Several regulatory requirements are not yet met.
Missing metadata means poor previews on social media and search.
Heavier than average — reducing page weight saves energy and bandwidth.
The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.
Weights reflect general web best practices. Individual needs may differ.
Content-Security-Policy header is missing
Security gaps expose your site and users to attacks, eroding trust.
HSTS header is missing
Security gaps expose your site and users to attacks, eroding trust.
No Content-Security-Policy header found
Security gaps expose your site and users to attacks, eroding trust.
Page weighs 28.8 MB (25.6 MB transferred)
Performance issues directly impact user engagement and conversion rates.
No <main> landmark found
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
High impact, low effort — start here.
High impact, requires investment.
Small gains, minimal effort.
Nothing in this quadrant — good news.
Low impact, high effort — do last.
Nothing in this quadrant — good news.
[](https://beavercheck.com/results/5e444f24-1977-4346-990e-13aa701dbbb1)<a href="https://beavercheck.com/results/5e444f24-1977-4346-990e-13aa701dbbb1"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fiec.ch" alt="BeaverCheck Score"></a>https://beavercheck.com/badge?url=https%3A%2F%2Fiec.chThis badge auto-updates with your latest scan result.
Your site has several issues that may be affecting user experience and business outcomes. Your LCP of 77.7s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.
9 barrier(s) likely increasing bounce by ~36%.
Page takes 77.7s to load
+12% bounceUsers abandon at ~3s — you're 75.2s over the 2.5s threshold
Fix: Optimize render-blocking resources, preload the hero image, and compress images
High main-thread blocking time
+2% bouncePage is non-interactive for 494ms after first paint
Fix: Defer third-party scripts and split large bundles
No HSTS header
+1% bounceReturning visitors are briefly exposed to downgrade attacks on first request
Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains
No Content-Security-Policy header
+1% bounceHigher XSS blast radius — one compromised script can exfiltrate the checkout form
Fix: Ship a reporting-only CSP first, then enforce once violations are clean
No viewport meta tag
+15% bounceMobile browsers render at desktop width and shrink — text unreadable, tap targets miniature
Fix: Add <meta name="viewport" content="width=device-width, initial-scale=1">
No Open Graph tags
+2% bounceLinks shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop
Fix: Add og:title, og:description, og:image, og:url to the page head
No structured data
+2% bounceNo rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices
Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)
Thin content
+3% bounceUnder 300 words — visitors bounce looking for substance, search engines rank competitors first
Fix: Add a substantive FAQ, product detail, or case-study section
No skip-to-content link
+1% bounceKeyboard and screen-reader users must tab through the entire header on every page
Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element
Preliminary CRO audit — each barrier links to the tab with detailed analysis.
CHF 650 investment → CHF 5.69/month returns + CHF 250,000 risk avoided
CHF 650
5h · 5 findings
CHF 5.69 /mo
~CHF 68 / year
CHF 250,000
if kept compliant
CHF 195 — in quick wins — start here for the fastest payback
Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.
5.0 developer hours at CHF130/hr
Based on Switzerland rates (CHF130/hr)
Start here for the best return on investment
CHF 20,839 / month at risk
~CHF 250,068 / year if left unfixed
CHF 250,000
+1 more
CHF 5.69 /mo
80431.6 MB/mo × 0.071 CHF/GB
Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.
Unique monthly visitors from your analytics
Purchases, signups, or key actions
Optional — for revenue estimation
more engaged visitors from reduced bounce
Fix 5 critical issues to capture this value
Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.
Your site's LCP: → estimated after fixes.
These are estimates based on industry research — actual results vary
Your data stays in your browser — nothing is sent to our servers
Thanks for your feedback!
We'll use a cached audit if available, or offer to scan.
Industry-standard audits powered by Google Lighthouse.
Key metrics that affect user experience.
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
10.43 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
77.65 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
494 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.007
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
17.24 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
79.25 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
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
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.
Source: Google web.dev / Lighthouse
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
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.
Performance issues directly impact user engagement and conversion rates.
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
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.
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
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img | iec.ch/themes/custom/iec/images/arrow-right-simple-line-icons.png | 5.7 KiB | 5.4 KiB |
subscribe div.field > p.text-align-center > a > img | iec.ch/system/files/inline-images/subscribe_darkblue.png | 6.2 KiB | 5.1 KiB |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| iec.ch/ | 821 ms |
| iec.ch/ | 0.0 ms |
| iec.ch/homepage | 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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /sites/default/files/css/css_At70hQY3ILLIA-4BhSxL85Yn6TPo... | 38.9 KiB | 35.2 KiB |
| cdn.jsdelivr.net/npm/bootstrap@3.4.1/dist/css/bootstrap.min.css | 17.5 KiB | 16.5 KiB |
| use.fontawesome.com/releases/v5.5.0/css/all.css | 11.6 KiB | 11.4 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.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.
Source: Google web.dev / Lighthouse
| URL | Transfer Size | Est Savings |
|---|---|---|
| /1f953c479d22/474d1bb585aa/141fa6216ac8/challenge.js | 574.6 KiB | 314.6 KiB |
| www.googletagmanager.com/gtag/js?id=G-3F71XQS4K3&cx=c>m=4e64k0h1 | 157.4 KiB | 110.1 KiB |
| www.googletagmanager.com/gtag/js?id=G-3F71XQS4K3 | 157.4 KiB | 66.5 KiB |
| www.googletagmanager.com/gtag/js?id=UA-34398331-1 | 124.9 KiB | 63.2 KiB |
| /sites/default/files/js/js_Grfmv-5CNuzze62geIH5mnA8ZbV79-... | 61.0 KiB | 44.1 KiB |
| /sites/default/files/js/js_V8xutc9hhgLgmFSIbTZQgFS9UbxQIM... | 52.9 KiB | 41.2 KiB |
| cdn.datatables.net/1.11.5/js/jquery.dataTables.min.js | 28.4 KiB | 23.6 KiB |
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
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 1.2 s |
| Other | 394 ms |
| Script Parsing & Compilation | 307 ms |
| Style & Layout | 289 ms |
| Parse HTML & CSS | 90 ms |
| Rendering | 22 ms |
| Garbage Collection | 9.4 ms |
Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache
Performance issues directly impact user engagement and conversion rates.
| Failure reason | Failure type |
|---|---|
| The page has an unload handler in a sub frame. | Actionable |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
Home div.visible-xs-block > div.iec-logo-header > a.visible-xs-block > img | iec.ch/themes/custom/iec/images/iec-logo-mobile.svg |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img | iec.ch/themes/custom/iec/images/arrow-right-simple-line-icons.png |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img | iec.ch/themes/custom/iec/images/arrow-right-simple-line-icons.png |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img | iec.ch/themes/custom/iec/images/arrow-right-simple-line-icons.png |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img | iec.ch/themes/custom/iec/images/arrow-right-simple-line-icons.png |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
logo div.iec-for-all-item-content > div.icon-text-wrapper > div.iec-for-all-item-icon > img.b-lazy | |
logo div.iec-for-all-item-content > div.icon-text-wrapper > div.iec-for-all-item-icon > img.b-lazy | |
logo div.iec-for-all-item-content > div.icon-text-wrapper > div.iec-for-all-item-icon > img.b-lazy | |
logo div.iec-for-all-item-content > div.icon-text-wrapper > div.iec-for-all-item-icon > img.b-lazy |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
We use cookies on this site to enhance your user experience
By clicking the Ac… body.path-node > div#sliding-popup |
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Past two weeks list section#single-element-text-7837 > div.text-link-container > div.item-link > a.hvr-icon-forward |
Final Draft International Standards div.text-block-content > div.field > p > a |
See details section#single-element-text-7839 > div.text-link-container > div.item-link > a.hvr-icon-forward |
Visit here section#single-element-text-3592 > div.text-link-container > div.item-link > a.hvr-icon-forward |
Energy a > div.paragraph > div.iec-slide-item-title > div.field |
Healthcare a > div.paragraph > div.iec-slide-item-title > div.field |
SDGs a > div.paragraph > div.iec-slide-item-title > div.field |
Cities & Communities a > div.paragraph > div.iec-slide-item-title > div.field |
Climate action a > div.paragraph > div.iec-slide-item-title > div.field |
Cyber security a > div.paragraph > div.iec-slide-item-title > div.field |
Smart manufacturing a > div.paragraph > div.iec-slide-item-title > div.field |
Transportation a > div.paragraph > div.iec-slide-item-title > div.field |
Industry a > div.iec-for-all-item-content > div.icon-text-wrapper > div.iec-for-all-item-title |
Government and regulators a > div.iec-for-all-item-content > div.icon-text-wrapper > div.iec-for-all-item-title |
Developing countries a > div.iec-for-all-item-content > div.icon-text-wrapper > div.iec-for-all-item-title |
Academia a > div.iec-for-all-item-content > div.icon-text-wrapper > div.iec-for-all-item-title |
Read more div.iec-white-papers-slider-item > article.document > div.iec-document-card-read-more-container > a.iec-read-more |
Read more div.iec-white-papers-slider-item > article.document > div.iec-document-card-read-more-container > a.iec-read-more |
Please select the services that are of interest to you, and stay up to date wit… div.cs-container > div.iec-block-container > div.col-sm-12 > h2.block-subtitle |
Details about our newsletters div.iec-block-container > div.block-readmore > div.field > a |
These are opportunities to improve the legibility of your content.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img |
Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.text-block-content > div.field > p > iframe.fw-iframe div.text-block-content > div.field > p > iframe.fw-iframe |
div.text-block-content > div.field > p > iframe.fw-iframe div.text-block-content > div.field > p > iframe.fw-iframe |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.region > div.visible-xs-block > div.iec-top-menu-container > a.iec-mobile-top-menu-item div.region > div.visible-xs-block > div.iec-top-menu-container > a.iec-mobile-top-menu-item |
div.slides-container > div.iec-white-papers-slider-item > article.document > a div.slides-container > div.iec-white-papers-slider-item > article.document > a |
div.slides-container > div.iec-white-papers-slider-item > article.document > a div.slides-container > div.iec-white-papers-slider-item > article.document > a |
div.slides-container > div.iec-white-papers-slider-item > article.document > a div.slides-container > div.iec-white-papers-slider-item > article.document > a |
div.slides-container > div.iec-white-papers-slider-item > article.document > a div.slides-container > div.iec-white-papers-slider-item > article.document > a |
div.slides-container > div.iec-white-papers-slider-item > article.document > a div.slides-container > div.iec-white-papers-slider-item > article.document > a |
div.slides-container > div.iec-white-papers-slider-item > article.document > a div.slides-container > div.iec-white-papers-slider-item > article.document > a |
div.slides-container > div.iec-white-papers-slider-item > article.document > a div.slides-container > div.iec-white-papers-slider-item > article.document > a |
div.slides-container > div.iec-white-papers-slider-item > article.document > a div.slides-container > div.iec-white-papers-slider-item > article.document > a |
div.slides-container > div.iec-white-papers-slider-item > article.document > a div.slides-container > div.iec-white-papers-slider-item > article.document > a |
div.paragraph > ul.social-media-links--platforms > li > a.iec-facebook div.paragraph > ul.social-media-links--platforms > li > a.iec-facebook |
div.paragraph > ul.social-media-links--platforms > li > a.iec-linkedin div.paragraph > ul.social-media-links--platforms > li > a.iec-linkedin |
div.paragraph > ul.social-media-links--platforms > li > a.iec-youtube_channel div.paragraph > ul.social-media-links--platforms > li > a.iec-youtube_channel |
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
countries div.field--item > div.paragraph > div.iec-statistics-block-item-container > h3.iec-statistics-block-item-title |
standards div.field--item > div.paragraph > div.iec-statistics-block-item-container > h3.iec-statistics-block-item-title |
certificates div.field--item > div.paragraph > div.iec-statistics-block-item-container > h3.iec-statistics-block-item-title |
experts div.field--item > div.paragraph > div.iec-statistics-block-item-container > h3.iec-statistics-block-item-title |
These are opportunities to improve keyboard navigation in your application.
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.
Descriptive link text helps search engines understand your content. Learn how to make links more accessible.
Performance issues directly impact user engagement and conversion rates.
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img |
a > div.iec-for-all-item-content > div.iec-for-all-item-link > img a > div.iec-for-all-item-content > div.iec-for-all-item-link > img |
Format your HTML in a way that enables crawlers to better understand your app’s content.
Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
div.region > div.visible-xs-block > div.iec-top-menu-container > a.iec-mobile-top-menu-item div.region > div.visible-xs-block > div.iec-top-menu-container > a.iec-mobile-top-menu-item |
To appear in search results, crawlers need access to your app.
Industry-standard audits powered by Google Lighthouse. — Desktop
Key metrics that affect user experience. — Desktop
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.44 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.80 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
24 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.012
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.80 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
3.66 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
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
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.
Source: Google web.dev / Lighthouse
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
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.
Performance issues directly impact user engagement and conversion rates.
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
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.
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
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
Energy a > div.paragraph > div.iec-slide-item-title > div.field | /2026-03/professional_photo-liu_haibo.jpg?VersionId=0EJqh... | 14.7 MiB | 11.2 MiB |
0 div.field--item > div.paragraph > div.iec-statistics-block-item-container > h1#iec-count-up-1905772950 | /2026-04/adobestock_1052088146.jpeg?VersionId=zxk3C36Ycua... | 5.9 MiB | 732.9 KiB |
Home div#navbar-collapse > div.region > a.hidden-xs > img | iec.ch/themes/custom/iec/images/IEC_logo.jpg | 22.7 KiB | 20.5 KiB |
subscribe div.field > p.text-align-center > a > img | iec.ch/system/files/inline-images/subscribe_darkblue.png | 6.2 KiB | 5.1 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| iec.ch/ | 275 ms |
| iec.ch/ | 0.0 ms |
| iec.ch/homepage | 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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /sites/default/files/css/css_At70hQY3ILLIA-4BhSxL85Yn6TPo... | 38.9 KiB | 35.6 KiB |
| cdn.jsdelivr.net/npm/bootstrap@3.4.1/dist/css/bootstrap.min.css | 17.5 KiB | 16.1 KiB |
| use.fontawesome.com/releases/v5.5.0/css/all.css | 11.6 KiB | 11.5 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.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.
Source: Google web.dev / Lighthouse
| URL | Transfer Size | Est Savings |
|---|---|---|
| /1f953c479d22/474d1bb585aa/141fa6216ac8/challenge.js | 575.3 KiB | 314.0 KiB |
| www.googletagmanager.com/gtag/js?id=G-3F71XQS4K3 | 157.4 KiB | 65.7 KiB |
| www.googletagmanager.com/gtag/js?id=UA-34398331-1 | 124.9 KiB | 64.5 KiB |
| /sites/default/files/js/js_Grfmv-5CNuzze62geIH5mnA8ZbV79-... | 61.0 KiB | 43.9 KiB |
| /sites/default/files/js/js_V8xutc9hhgLgmFSIbTZQgFS9UbxQIM... | 52.9 KiB | 41.2 KiB |
| cdn.datatables.net/1.11.5/js/jquery.dataTables.min.js | 28.4 KiB | 23.6 KiB |
Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache
Performance issues directly impact user engagement and conversion rates.
| Failure reason | Failure type |
|---|---|
| The page has an unload handler in a sub frame. | Actionable |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
Home div#navbar-collapse > div.region > a.hidden-xs > img | iec.ch/themes/custom/iec/images/IEC_logo.jpg |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
icon a > div.paragraph > div.iec-slide-item-img-wrap > img.iec-slide-item-img | |
logo div.iec-for-all-item-container > div.iec-for-all-item-flex-item > div.iec-for-all-item-img > img.b-lazy | |
logo div.iec-for-all-item-container > div.iec-for-all-item-flex-item > div.iec-for-all-item-img > img.b-lazy | |
logo div.iec-for-all-item-container > div.iec-for-all-item-flex-item > div.iec-for-all-item-img > img.b-lazy | |
logo div.iec-for-all-item-container > div.iec-for-all-item-flex-item > div.iec-for-all-item-img > img.b-lazy |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Energy
SDGs
Climate action
Smart manufacturing
Healthcare
Cities & Communities
… div.container > div.iec-grid-icon-slider-wrapper > div#grid-icon-slider-497932334 > div.carousel-inner |
Read more
Read more
Read more
Read more
Read more div.container > div.iec-white-papers-slider-wrapper > div#grid-icon-slider-2109212649 > div.carousel-inner |
Read more
Read more
Read more
Read more
Read more div.container > div.iec-white-papers-slider-wrapper > div#grid-icon-slider-2134488651 > div.carousel-inner |
ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
We use cookies on this site to enhance your user experience
By clicking the Ac… body.path-node > div#sliding-popup |
When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more about input field labels.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Energy
SDGs
Climate action
Smart manufacturing
Healthcare
Cities & Communities
… div.container > div.iec-grid-icon-slider-wrapper > div#grid-icon-slider-497932334 > div.carousel-inner |
Read more
Read more
Read more
Read more
Read more div.container > div.iec-white-papers-slider-wrapper > div#grid-icon-slider-2109212649 > div.carousel-inner |
Read more
Read more
Read more
Read more
Read more div.container > div.iec-white-papers-slider-wrapper > div#grid-icon-slider-2134488651 > div.carousel-inner |
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Advanced search ul.menu > li.first > a > span.link-text |
Webstore ul.menu > li > a > span.link-text |
IEC PSP nav#block-topmenu--2 > ul.menu > li > a |
e-tech nav#block-topmenu--2 > ul.menu > li > a |
Online learning nav#block-topmenu--2 > ul.menu > li > a |
Contact us nav#block-topmenu--2 > ul.menu > li.last > a |
A global network that covers 99% of the world population and offers a free prog… div.iec-statistics-block-item-container > div.hidden-xs > div.field > p |
Develops international standards that
represent a global concensus
of state-of-… div.iec-statistics-block-item-container > div.hidden-xs > div.field > p |
Four Conformity Assessment Systems
that cover the breadth of electrical and ele… div.iec-statistics-block-item-container > div.hidden-xs > div.field > p |
Over 30 000 experts and more than
100 years expertise div.iec-statistics-block-item-container > div.hidden-xs > div.field > p |
Past two weeks list section#single-element-text-7837 > div.text-link-container > div.item-link > a.hvr-icon-forward |
Final Draft International Standards div.text-block-content > div.field > p > a |
See details section#single-element-text-7839 > div.text-link-container > div.item-link > a.hvr-icon-forward |
Visit here section#single-element-text-3592 > div.text-link-container > div.item-link > a.hvr-icon-forward |
Energy a > div.paragraph > div.iec-slide-item-title > div.field |
SDGs a > div.paragraph > div.iec-slide-item-title > div.field |
Climate action a > div.paragraph > div.iec-slide-item-title > div.field |
Smart manufacturing a > div.paragraph > div.iec-slide-item-title > div.field |
Healthcare a > div.paragraph > div.iec-slide-item-title > div.field |
Cities & Communities a > div.paragraph > div.iec-slide-item-title > div.field |
Cyber security a > div.paragraph > div.iec-slide-item-title > div.field |
Transportation a > div.paragraph > div.iec-slide-item-title > div.field |
Industry a > div.iec-for-all-item-container > div.iec-for-all-item-flex-item > p.iec-for-all-item-title |
Government and regulators a > div.iec-for-all-item-container > div.iec-for-all-item-flex-item > p.iec-for-all-item-title |
Developing countries a > div.iec-for-all-item-container > div.iec-for-all-item-flex-item > p.iec-for-all-item-title |
Academia a > div.iec-for-all-item-container > div.iec-for-all-item-flex-item > p.iec-for-all-item-title |
Please select the services that are of interest to you, and stay up to date wit… div.cs-container > div.iec-block-container > div.col-sm-12 > h2.block-subtitle |
Details about our newsletters div.iec-block-container > div.block-readmore > div.field > a |
These are opportunities to improve the legibility of your content.
Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.text-block-content > div.field > p > iframe.fw-iframe div.text-block-content > div.field > p > iframe.fw-iframe |
div.text-block-content > div.field > p > iframe.fw-iframe div.text-block-content > div.field > p > iframe.fw-iframe |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.row > div.iec-white-papers-slider-item > article.document > a div.row > div.iec-white-papers-slider-item > article.document > a |
div.row > div.iec-white-papers-slider-item > article.document > a div.row > div.iec-white-papers-slider-item > article.document > a |
div.row > div.iec-white-papers-slider-item > article.document > a div.row > div.iec-white-papers-slider-item > article.document > a |
div.row > div.iec-white-papers-slider-item > article.document > a div.row > div.iec-white-papers-slider-item > article.document > a |
div.row > div.iec-white-papers-slider-item > article.document > a div.row > div.iec-white-papers-slider-item > article.document > a |
div.row > div.iec-white-papers-slider-item > article.document > a div.row > div.iec-white-papers-slider-item > article.document > a |
div.row > div.iec-white-papers-slider-item > article.document > a div.row > div.iec-white-papers-slider-item > article.document > a |
div.row > div.iec-white-papers-slider-item > article.document > a div.row > div.iec-white-papers-slider-item > article.document > a |
div.row > div.iec-white-papers-slider-item > article.document > a div.row > div.iec-white-papers-slider-item > article.document > a |
div.paragraph > ul.social-media-links--platforms > li > a.iec-facebook div.paragraph > ul.social-media-links--platforms > li > a.iec-facebook |
div.paragraph > ul.social-media-links--platforms > li > a.iec-linkedin div.paragraph > ul.social-media-links--platforms > li > a.iec-linkedin |
div.paragraph > ul.social-media-links--platforms > li > a.iec-youtube_channel div.paragraph > ul.social-media-links--platforms > li > a.iec-youtube_channel |
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
countries div.field--item > div.paragraph > div.iec-statistics-block-item-container > h3.iec-statistics-block-item-title |
standards div.field--item > div.paragraph > div.iec-statistics-block-item-container > h3.iec-statistics-block-item-title |
certificates div.field--item > div.paragraph > div.iec-statistics-block-item-container > h3.iec-statistics-block-item-title |
experts div.field--item > div.paragraph > div.iec-statistics-block-item-container > h3.iec-statistics-block-item-title |
These are opportunities to improve keyboard navigation in your application.
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.
Descriptive link text helps search engines understand your content. Learn how to make links more accessible.
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.
Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
div.region > div.visible-xs-block > div.iec-top-menu-container > a.iec-mobile-top-menu-item div.region > div.visible-xs-block > div.iec-top-menu-container > a.iec-mobile-top-menu-item |
To appear in search results, crawlers need access to your app.
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