C — https://uab.cat | BeaverCheck Audit

Site Health

Score: 74 / 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.

Well-optimized for search — your content is discoverable.

Good server performance with room for optimization.

Mostly compliant — a few items need attention.

Rich content metadata — your pages look great everywhere.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

Apple · 1113 peers

You 74

Avg 73

At average

0 50 100

Better than 57% of Apple sites See full Apple benchmark →

Bootstrap · 721 peers

You 74

Avg 73

At average

0 50 100

Better than 55% of Bootstrap sites See full Bootstrap benchmark →

Top Priorities (5)

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy

Page weighs 9.1 MB (7.5 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget

1 button(s) with no accessible text

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Link & Button Quality

48 third-party resources (100% of weight)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Inventory

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

Embed this badge

Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fuab.cat)](https://beavercheck.com/results/e28c58eb-467e-423e-8bd3-7524915a9cba)

HTML

<a href="https://beavercheck.com/results/e28c58eb-467e-423e-8bd3-7524915a9cba"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fuab.cat" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Fuab.cat

This badge auto-updates with your latest scan result.

What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 26.9s exceeds Google's 2.5s 'Good' threshold and the 2 performance issues below directly contribute to it. Addressing the critical issues below would have the most immediate impact on your user trust.

2 security gaps detected — browsers may warn visitors about your site.

Your LCP is 26.9s — fixing the 2 performance criticals could bring it under Google's 2.5s 'Good' threshold.

1 accessibility issue excludes users who rely on assistive technology.

Could reach Estimate based on resolving critical issues

Conversion Barriers

2 critical 6 warning

8 barrier(s) likely increasing bounce by ~29%.

Speed (2)

Page takes 26.9s to load

+12% bounce

Users abandon at ~3s — you're 24.4s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

High main-thread blocking time

+2% bounce

Page is non-interactive for 498ms after first paint

Fix: Defer third-party scripts and split large bundles

Trust (2)

No HSTS header

+1% bounce

Returning 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% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Usability (1)

Severe layout shift during page load

+6% bounce

Users mis-click when content jumps — converting intent into frustration

Fix: Reserve space for images, ads, and embeds with explicit width/height

Content (1)

Content is hard to read

+2% bounce

Graduate-level reading difficulty — limits the addressable audience for product or blog pages

Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60

Navigation (2)

No skip-to-content link

+1% bounce

Keyboard 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

1 broken link(s) on the page

+2% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

€358 investment → €1.75/month returns + EUR 120,500,000 risk avoided

Payback period: > 2 years First-year ROI: -94%

Investment

€358

6h · 5 findings

Monthly returns

€1.75 /mo

~€21 / year

Bandwidth savings €1.75

Regulatory risk avoided

EUR 120,500,000

if kept compliant

ePrivacy Directive EUR 100,000,000
RGPD EUR 20,000,000
EAA EUR 500,000

€55 — 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.

Full methodology & sources

Estimated Remediation Cost

€358

6.5 developer hours at €55/hr

Based on Spain rates (€55/hr)

Quick wins

€55 2 fixes in ~60 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

€ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

€10,041,668 / month at risk

~€120,500,021 / year if left unfixed

Compliance Risk

€120,500,000

ePrivacy DirectiveRGPDEAA

No privacy policy link detected
RGPD: EUR 10,000 – EUR 20,000,000
Trackers detected but no cookie policy found
RGPD: EUR 5,000 – EUR 10,000,000
Trackers detected but no cookie policy found
RGPD: EUR 10,000 – EUR 20,000,000

+4 more

Bandwidth Waste

€1.75 /mo

23634.8 MB/mo × 0.074 EUR/GB

Optimize transfer: save ~2.4 MB per page load
Saves €1.75/mo

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.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue

Current bounce (est.)

After fixes (est.)

Estimated bounce reduction

Fix 4 critical issues to capture this value

How this is calculated

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

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

100

Best Practices

100

SEO

Core Web Vitals

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.

4.13 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

26.87 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

498 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.325

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

5.75 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.

27.60 s

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

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.

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
www.uab.cat/Imatge/857/117/25fotocampus.jpg	3600.0 s	1.9 MiB
www.uab.cat/Imatge/359/47/SetmanaSiS.jpg	3600.0 s	808.9 KiB
www.uab.cat/Imatge/788/485/IIJornadaTransferenciaCSiH.png	3600.0 s	722.1 KiB
www.uab.cat/Imatge/236/470/serveis,10.jpg	3600.0 s	412.1 KiB
www.uab.cat/Imatge/299/982/imatge03.jpg	3600.0 s	373.3 KiB
www.uab.cat/Imatge/927/888/IncendiOdena_LidarTeam_2016_webUAB.jpg	3600.0 s	328.8 KiB
www.uab.cat/Imatge/426/80/imatge02.jpg	3600.0 s	308.1 KiB
www.uab.cat/Imatge/381/231/2026_Frida-38_web.jpg	3600.0 s	270.6 KiB
www.uab.cat/Imatge/888/639/portada25.jpg	3600.0 s	256.3 KiB
www.uab.cat/Imatge/654/779/RecercaUAB.jpg	3600.0 s	252.8 KiB
www.uab.cat/Xcelerate/WAI/font/Hubot-Sans.woff2	0.0 ms	166.5 KiB
www.uab.cat/Xcelerate/WAI/font/Mona-Sans.woff2	0.0 ms	134.3 KiB
www.uab.cat/Imatge/104/593/vang15IV.jpg	3600.0 s	154.2 KiB
www.uab.cat/Imatge/944/99/jugato1_web.jpeg	3600.0 s	134.2 KiB
www.uab.cat/Imatge/129/950/LLORO-KEA-DISCAPACITAT_XimenaNelsonUC-ok.jpg	3600.0 s	130.3 KiB
www.uab.cat/Imatge/993/829/estudis-estudiants.jpg	3600.0 s	96.9 KiB
www.uab.cat/Imatge/270/56/TaulaPicnic,1.jpg	3600.0 s	96.4 KiB
www.uab.cat/Imatge/269/988/eldiaries.jpg	3600.0 s	94.3 KiB
www.uab.cat/Imatge/1008/171/infok.jpg	3600.0 s	71.8 KiB
www.uab.cat/Imatge/151/373/grasa,1.jpg	3600.0 s	69.8 KiB
www.uab.cat/Imatge/820/399/PDCOGs_Graphical_Abstract.jpg	3600.0 s	58.5 KiB
www.uab.cat/Imatge/228/670/rtve,2.jpg	3600.0 s	51.6 KiB
www.uab.cat/Imatge/699/912/logo-A4U,0.png	3600.0 s	46.3 KiB
/uc.js?cbid=e3f09dda-a690-4207-be93-92a2217eddc0&implemen...	837.0 s	27.0 KiB
www.uab.cat/Xcelerate/WAI/css/sites/portal.css	0.0 ms	23.0 KiB
www.uab.cat/Xcelerate/WAI/js/vendor/owl/owl.carousel.min.js	0.0 ms	11.5 KiB
www.uab.cat/Imatge/688/150/logo-XVU,0.png	3600.0 s	13.8 KiB
www.uab.cat/Xcelerate/WAI/img/UAB-legal.svg	0.0 ms	8.6 KiB
www.uab.cat/Xcelerate/WAI/img/UAB-3linies-verd.svg	0.0 ms	8.4 KiB
www.uab.cat/Imatge/423/772/logo-hr,0.png	3600.0 s	7.9 KiB
www.uab.cat/Imatge/615/621/logo-ECIU,0.png	3600.0 s	7.2 KiB
www.uab.cat/Imatge/554/849/logo-EUA,0.png	3600.0 s	6.5 KiB
www.uab.cat/Xcelerate/WAI/js/utils.min.js	0.0 ms	3.9 KiB
www.uab.cat/Xcelerate/WAI/css/vendor/owl/owl.carousel.min.css	0.0 ms	1.4 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:0.325109] map[node:map[boundingRect:map[bottom:1653 height:1285 left:0 right:412 top:368 width:412] lhId:page-23-SECTION nodeLabel:Enllaços directes Estudis Graus Màsters i Postgraus Doctorats Aliança europea E… path:1,HTML,1,BODY,2,MAIN,2,SECTION selector:body > main#contingut > section#conj-targetes-menu-1 snippet:<section id="conj-targetes-menu-1" class="jumbotron conj-targetes" aria-labelledby="conj-targetes-menu-1-titol"> type:node] score:0.325109]]

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
UAB, un campus ple d'experiències Saber-ne més sobre "... i un campus de pel·lí… `div.owl-stage-outer > div.owl-stage > div.owl-item > div.slide`	www.uab.cat/Imatge/857/117/25fotocampus.jpg	1.9 MiB	1.5 MiB
Fotografia de la II Jornada de Transferència de Coneixement en Ciències Socials… `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/788/485/IIJornadaTransferenciaCSiH.png	720.8 KiB	682.5 KiB
XVI edició de la Setmana Saludable i Sostenible Saber-ne més sobre "Del 16 al 2… `div.owl-stage-outer > div.owl-stage > div.owl-item > div.slide`	www.uab.cat/Imatge/359/47/SetmanaSiS.jpg	818.0 KiB	613.6 KiB
Serveis `ul > li.targeta > div.imatge > img`	www.uab.cat/Imatge/236/470/serveis,10.jpg	424.6 KiB	373.8 KiB
Imatge de la zona d'Òdena incendiada el 2015 `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/927/888/IncendiOdena_LidarTeam_2016_webUAB.jpg	328.3 KiB	290.0 KiB
Reunió del projecte FRIDA `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/381/231/2026_Frida-38_web.jpg	273.4 KiB	232.3 KiB
Recerca `ul > li.targeta > div.imatge > img`	www.uab.cat/Imatge/654/779/RecercaUAB.jpg	268.9 KiB	214.5 KiB
La Vanguardia `div.targeta-wrap > a > div.imatge > img`	www.uab.cat/Imatge/104/593/vang15IV.jpg	155.3 KiB	112.0 KiB
Noies jugant a un joc de taula `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/944/99/jugato1_web.jpeg	136.8 KiB	95.9 KiB
El lloro kea discapacitat Bruce lluitant amb un altre kea. foto Ximena Nelson `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/129/950/LLORO-KEA-DISCAPACITAT_XimenaNelsonUC-ok.jpg	131.0 KiB	91.9 KiB
Taules de pícnic a l'Espai Saludable i Sostenible (Espai SiS) `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/270/56/TaulaPicnic,1.jpg	106.7 KiB	75.3 KiB
Estudiants `ul > li.targeta > div.imatge > img`	www.uab.cat/Imatge/993/829/estudis-estudiants.jpg	96.8 KiB	58.5 KiB
Eldiario.es `div.targeta-wrap > a > div.imatge > img`	www.uab.cat/Imatge/269/988/eldiaries.jpg	96.5 KiB	52.0 KiB
Aliança 4 Universitats `ul.row > li > a > img`	www.uab.cat/Imatge/699/912/logo-A4U,0.png	47.1 KiB	44.1 KiB
InfoK `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/1008/171/infok.jpg	73.8 KiB	34.7 KiB
UAB, un campus ple d'experiències Saber-ne més sobre "4.500 intercanvis interna… `div.owl-stage-outer > div.owl-stage > div.owl-item > div.slide`	www.uab.cat/Imatge/299/982/imatge03.jpg	372.9 KiB	30.1 KiB
Gràfic `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/820/399/PDCOGs_Graphical_Abstract.jpg	63.8 KiB	28.3 KiB
3Cat `div.targeta-wrap > a > div.imatge > img`	www.uab.cat/Imatge/151/373/grasa,1.jpg	72.1 KiB	27.5 KiB
Logo Xarxa Vives `ul.row > li > a > img`	www.uab.cat/Imatge/688/150/logo-XVU,0.png	14.0 KiB	13.2 KiB
TVE `div.targeta-wrap > a > div.imatge > img`	www.uab.cat/Imatge/228/670/rtve,2.jpg	53.4 KiB	9.2 KiB
Logotip HR Excellence in Research `ul.row > li > a > img`	www.uab.cat/Imatge/423/772/logo-hr,0.png	8.6 KiB	7.4 KiB
Logo ECIU University `ul.row > li > a > img`	www.uab.cat/Imatge/615/621/logo-ECIU,0.png	7.6 KiB	6.9 KiB
Logo Xarxa EUA `ul.row > li > a > img`	www.uab.cat/Imatge/554/849/logo-EUA,0.png	6.1 KiB	5.8 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: XVI edició de la Setmana Saludable i Sostenible Saber-ne més sobre "Del 16 al 2…

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

selector: div.owl-stage-outer > div.owl-stage > div.owl-item > div.slide

snippet: <div role="listitem" class="slide" style="background-image: url("/Imatge/359/47/SetmanaSiS.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.

URL	Protocol
www.uab.cat/	http/1.1
www.uab.cat/Xcelerate/WAI/font/Mona-Sans.woff2	http/1.1
www.uab.cat/Xcelerate/WAI/font/Hubot-Sans.woff2	http/1.1
www.uab.cat/Xcelerate/WAI/css/sites/portal.css	http/1.1
www.uab.cat/Xcelerate/WAI/css/vendor/owl/owl.carousel.min.css	http/1.1
www.uab.cat/Xcelerate/WAI/js/utils.min.js	http/1.1
www.uab.cat/Xcelerate/WAI/js/vendor/owl/owl.carousel.min.js	http/1.1
www.uab.cat/Imatge/993/829/estudis-estudiants.jpg	http/1.1
www.uab.cat/Imatge/654/779/RecercaUAB.jpg	http/1.1
www.uab.cat/Imatge/236/470/serveis,10.jpg	http/1.1
www.uab.cat/Imatge/381/231/2026_Frida-38_web.jpg	http/1.1
www.uab.cat/Imatge/1008/171/infok.jpg	http/1.1
www.uab.cat/Imatge/129/950/LLORO-KEA-DISCAPACITAT_XimenaNelsonUC-ok.jpg	http/1.1
www.uab.cat/Imatge/788/485/IIJornadaTransferenciaCSiH.png	http/1.1
www.uab.cat/Imatge/944/99/jugato1_web.jpeg	http/1.1
www.uab.cat/Imatge/927/888/IncendiOdena_LidarTeam_2016_webUAB.jpg	http/1.1
www.uab.cat/Imatge/820/399/PDCOGs_Graphical_Abstract.jpg	http/1.1
www.uab.cat/Imatge/270/56/TaulaPicnic,1.jpg	http/1.1
www.uab.cat/Imatge/151/373/grasa,1.jpg	http/1.1
www.uab.cat/Imatge/228/670/rtve,2.jpg	http/1.1
www.uab.cat/Imatge/104/593/vang15IV.jpg	http/1.1
www.uab.cat/Imatge/269/988/eldiaries.jpg	http/1.1
www.uab.cat/Imatge/423/772/logo-hr,0.png	http/1.1
www.uab.cat/Imatge/615/621/logo-ECIU,0.png	http/1.1
www.uab.cat/Imatge/554/849/logo-EUA,0.png	http/1.1
www.uab.cat/Imatge/688/150/logo-XVU,0.png	http/1.1
www.uab.cat/Imatge/699/912/logo-A4U,0.png	http/1.1
www.uab.cat/Xcelerate/WAI/img/icones.svg#icona-dropdown	http/1.1
www.uab.cat/Xcelerate/WAI/img/UAB-3linies-verd.svg	http/1.1
www.uab.cat/Xcelerate/WAI/img/UAB-legal.svg	http/1.1
www.uab.cat/Imatge/359/47/SetmanaSiS.jpg	http/1.1
www.uab.cat/Imatge/888/639/portada25.jpg	http/1.1
www.uab.cat/Imatge/426/80/imatge02.jpg	http/1.1
www.uab.cat/Imatge/299/982/imatge03.jpg	http/1.1
www.uab.cat/Imatge/857/117/25fotocampus.jpg	http/1.1
www.uab.cat/Xcelerate/WAI/img/simbol.png	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

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

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
www.uab.cat/Xcelerate/WAI/css/sites/portal.css	23.0 KiB	323 ms
www.uab.cat/Xcelerate/WAI/css/vendor/owl/owl.carousel.min.css	1.4 KiB	483 ms
code.jquery.com/jquery-3.4.1.slim.min.js	24.1 KiB	931 ms

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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: 788 ms

URL	Time Spent
uab.cat/	788 ms
www.uab.cat/	0.0 ms

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.

Element	Layout shift score
Enllaços directes Estudis Graus Màsters i Postgraus Doctorats Aliança europea E… `body > main#contingut > section#conj-targetes-menu-1`	0.325

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: 160 ms 18.9 KiB

URL	Transfer Size	Est Savings
www.uab.cat/Xcelerate/WAI/css/sites/portal.css	22.6 KiB	18.9 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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

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

Estimated savings: 960 ms 221.5 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-2CH1808E6F&cx=c&gtm=4e64k1h2	172.7 KiB	66.1 KiB
www.googletagmanager.com/gtag/js?id=AW-1032775476&cx=c&gtm=4e64k1h2	136.3 KiB	64.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-PW3QBZ4	155.7 KiB	63.5 KiB
/e3f09dda-a690-4207-be93-92a2217eddc0/cc.js?renew=false&r...	71.7 KiB	27.5 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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	917 ms
Other	543 ms
Style & Layout	241 ms
Script Parsing & Compilation	170 ms
Parse HTML & CSS	133 ms
Rendering	68 ms

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.

URL	Transfer Size
www.uab.cat/Imatge/857/117/25fotocampus.jpg	1.9 MiB
www.uab.cat/Imatge/359/47/SetmanaSiS.jpg	808.9 KiB
www.uab.cat/Imatge/788/485/IIJornadaTransferenciaCSiH.png	722.1 KiB
www.uab.cat/Imatge/236/470/serveis,10.jpg	412.1 KiB
www.uab.cat/Imatge/299/982/imatge03.jpg	373.3 KiB
www.uab.cat/Imatge/927/888/IncendiOdena_LidarTeam_2016_webUAB.jpg	328.8 KiB
www.uab.cat/Imatge/426/80/imatge02.jpg	308.1 KiB
www.uab.cat/Imatge/381/231/2026_Frida-38_web.jpg	270.6 KiB
www.uab.cat/Imatge/888/639/portada25.jpg	256.3 KiB
www.uab.cat/Imatge/654/779/RecercaUAB.jpg	252.8 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
Logotip HR Excellence in Research `ul.row > li > a > img`	www.uab.cat/Imatge/423/772/logo-hr,0.png
Logo ECIU University `ul.row > li > a > img`	www.uab.cat/Imatge/615/621/logo-ECIU,0.png
Logo Xarxa Vives `ul.row > li > a > img`	www.uab.cat/Imatge/688/150/logo-XVU,0.png
Logo Xarxa EUA `ul.row > li > a > img`	www.uab.cat/Imatge/554/849/logo-EUA,0.png
Aliança 4 Universitats `ul.row > li > a > img`	www.uab.cat/Imatge/699/912/logo-A4U,0.png

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

●Optimize DOM size

●Font display

●Forced reflow

●LCP breakdown

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 5 user timings

●JavaScript execution time 1.1 s

●Avoid long main-thread tasks 7 long tasks found

●Avoid non-composited animations 5 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 50 ms

●Server Backend Latencies 120 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 20 ms

○INP breakdown

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.

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
ABR. 23 10è Congrés Internacional sobre el Control de la Fertilitat de la Fauna… `main#contingut > section#conj-agenda-carousel-1 > div.container > div#agenda-carousel-1`
La UAB acull la primera reunió internacional del projecte europeu FRIDA La UAB … `main#contingut > section#conj-noticies-carousel-1 > div.container > div#noticies-carousel-1`
UAB, un campus ple d'experiències Saber-ne més sobre "Una universitat pública i… `body > main#contingut > section#conj-promocio-carousel-2 > div#promocio-carousel-2`

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.

○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]`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

●`[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 are distinguishable without relying on color.

●Links have a discernible name

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

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

●Document has a main landmark.

●Deprecated ARIA roles were not used

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○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 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

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○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

○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.

○`[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.

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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

100

Best Practices

100

SEO

Core Web Vitals

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.

758 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

4.58 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

11 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.316

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.24 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.

4.68 s

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.

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

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.

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
www.uab.cat/Imatge/857/117/25fotocampus.jpg	3600.0 s	1.9 MiB
www.uab.cat/Imatge/359/47/SetmanaSiS.jpg	3600.0 s	808.9 KiB
www.uab.cat/Imatge/788/485/IIJornadaTransferenciaCSiH.png	3600.0 s	722.1 KiB
www.uab.cat/Imatge/236/470/serveis,10.jpg	3600.0 s	412.1 KiB
www.uab.cat/Imatge/299/982/imatge03.jpg	3600.0 s	373.3 KiB
www.uab.cat/Imatge/927/888/IncendiOdena_LidarTeam_2016_webUAB.jpg	3600.0 s	328.8 KiB
www.uab.cat/Imatge/426/80/imatge02.jpg	3600.0 s	308.1 KiB
www.uab.cat/Imatge/381/231/2026_Frida-38_web.jpg	3600.0 s	270.6 KiB
www.uab.cat/Imatge/888/639/portada25.jpg	3600.0 s	256.3 KiB
www.uab.cat/Imatge/654/779/RecercaUAB.jpg	3600.0 s	252.8 KiB
www.uab.cat/Xcelerate/WAI/font/Hubot-Sans.woff2	0.0 ms	166.5 KiB
www.uab.cat/Xcelerate/WAI/font/Mona-Sans.woff2	0.0 ms	134.3 KiB
www.uab.cat/Imatge/104/593/vang15IV.jpg	3600.0 s	154.2 KiB
www.uab.cat/Imatge/944/99/jugato1_web.jpeg	3600.0 s	134.2 KiB
www.uab.cat/Imatge/129/950/LLORO-KEA-DISCAPACITAT_XimenaNelsonUC-ok.jpg	3600.0 s	130.3 KiB
www.uab.cat/Imatge/993/829/estudis-estudiants.jpg	3600.0 s	96.9 KiB
www.uab.cat/Imatge/270/56/TaulaPicnic,1.jpg	3600.0 s	96.4 KiB
www.uab.cat/Imatge/269/988/eldiaries.jpg	3600.0 s	94.3 KiB
www.uab.cat/Imatge/1008/171/infok.jpg	3600.0 s	71.8 KiB
www.uab.cat/Imatge/151/373/grasa,1.jpg	3600.0 s	69.8 KiB
www.uab.cat/Imatge/820/399/PDCOGs_Graphical_Abstract.jpg	3600.0 s	58.5 KiB
www.uab.cat/Imatge/228/670/rtve,2.jpg	3600.0 s	51.6 KiB
www.uab.cat/Imatge/699/912/logo-A4U,0.png	3600.0 s	46.3 KiB
/uc.js?cbid=e3f09dda-a690-4207-be93-92a2217eddc0&implemen...	822.0 s	27.0 KiB
www.uab.cat/Xcelerate/WAI/css/sites/portal.css	0.0 ms	23.0 KiB
www.uab.cat/Xcelerate/WAI/js/vendor/owl/owl.carousel.min.js	0.0 ms	11.5 KiB
www.uab.cat/Imatge/688/150/logo-XVU,0.png	3600.0 s	13.8 KiB
www.uab.cat/Xcelerate/WAI/img/UAB-legal.svg	0.0 ms	8.6 KiB
www.uab.cat/Xcelerate/WAI/img/UAB-2linies-verd.svg	0.0 ms	8.2 KiB
www.uab.cat/Imatge/423/772/logo-hr,0.png	3600.0 s	7.9 KiB
www.uab.cat/Imatge/615/621/logo-ECIU,0.png	3600.0 s	7.2 KiB
www.uab.cat/Imatge/554/849/logo-EUA,0.png	3600.0 s	6.5 KiB
www.uab.cat/Xcelerate/WAI/js/utils.min.js	0.0 ms	3.9 KiB
www.uab.cat/Xcelerate/WAI/css/vendor/owl/owl.carousel.min.css	0.0 ms	1.4 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.

items: [map[node:map[type:text value:Total] score:0.315745] map[node:map[boundingRect:map[bottom:1332 height:594 left:0 right:1350 top:738 width:1350] lhId:page-23-SECTION nodeLabel:Enllaços directes Estudis Graus Màsters i Postgraus Doctorats Aliança europea E… path:1,HTML,1,BODY,2,MAIN,2,SECTION selector:body > main#contingut > section#conj-targetes-menu-1 snippet:<section id="conj-targetes-menu-1" class="jumbotron conj-targetes" aria-labelledby="conj-targetes-menu-1-titol"> type:node] score:0.315745 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:3234 height:389 left:68 right:358 top:2845 width:290] lhId:page-15-IMG nodeLabel:3Cat path:1,HTML,1,BODY,2,MAIN,7,SECTION,0,DIV,1,UL,0,LI,0,DIV,0,A,1,DIV,0,IMG selector:div.targeta-wrap > a > div.imatge > img snippet:<img src="/Imatge/151/373/grasa,1.jpg" alt="3Cat"> type:node]]] type:subitems]]]

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
... i un campus de pel·lícula! UAB, un campus ple d'experiències Saber-ne més … `div.owl-stage-outer > div.owl-stage > div.owl-item > div.slide`	www.uab.cat/Imatge/857/117/25fotocampus.jpg	1.9 MiB	1.5 MiB
Fotografia de la II Jornada de Transferència de Coneixement en Ciències Socials… `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/788/485/IIJornadaTransferenciaCSiH.png	720.8 KiB	713.0 KiB
Del 16 al 24 d'abril XVI edició de la Setmana Saludable i Sostenible Saber-ne … `div.owl-stage-outer > div.owl-stage > div.owl-item > div.slide`	www.uab.cat/Imatge/359/47/SetmanaSiS.jpg	818.0 KiB	613.6 KiB
Serveis `ul > li.targeta > div.imatge > img`	www.uab.cat/Imatge/236/470/serveis,10.jpg	424.6 KiB	398.8 KiB
Imatge de la zona d'Òdena incendiada el 2015 `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/927/888/IncendiOdena_LidarTeam_2016_webUAB.jpg	328.3 KiB	320.5 KiB
Reunió del projecte FRIDA `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/381/231/2026_Frida-38_web.jpg	273.4 KiB	262.8 KiB
Recerca `ul > li.targeta > div.imatge > img`	www.uab.cat/Imatge/654/779/RecercaUAB.jpg	268.9 KiB	239.6 KiB
La Vanguardia `div.targeta-wrap > a > div.imatge > img`	www.uab.cat/Imatge/104/593/vang15IV.jpg	155.3 KiB	135.9 KiB
Noies jugant a un joc de taula `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/944/99/jugato1_web.jpeg	136.8 KiB	126.4 KiB
El lloro kea discapacitat Bruce lluitant amb un altre kea. foto Ximena Nelson `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/129/950/LLORO-KEA-DISCAPACITAT_XimenaNelsonUC-ok.jpg	131.0 KiB	122.5 KiB
Taules de pícnic a l'Espai Saludable i Sostenible (Espai SiS) `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/270/56/TaulaPicnic,1.jpg	106.7 KiB	88.6 KiB
Estudiants `ul > li.targeta > div.imatge > img`	www.uab.cat/Imatge/993/829/estudis-estudiants.jpg	96.8 KiB	83.6 KiB
Eldiario.es `div.targeta-wrap > a > div.imatge > img`	www.uab.cat/Imatge/269/988/eldiaries.jpg	96.5 KiB	75.9 KiB
InfoK `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/1008/171/infok.jpg	73.8 KiB	64.2 KiB
Gràfic `div.slide > a > div.imatge > img`	www.uab.cat/Imatge/820/399/PDCOGs_Graphical_Abstract.jpg	63.8 KiB	52.3 KiB
3Cat `div.targeta-wrap > a > div.imatge > img`	www.uab.cat/Imatge/151/373/grasa,1.jpg	72.1 KiB	51.4 KiB
Aliança 4 Universitats `ul.row > li > a > img`	www.uab.cat/Imatge/699/912/logo-A4U,0.png	47.1 KiB	45.1 KiB
TVE `div.targeta-wrap > a > div.imatge > img`	www.uab.cat/Imatge/228/670/rtve,2.jpg	53.4 KiB	33.3 KiB
4.500 intercanvis internacionals, 10.500 pràctiques professionals... UAB, un c… `div.owl-stage-outer > div.owl-stage > div.owl-item > div.slide`	www.uab.cat/Imatge/299/982/imatge03.jpg	372.9 KiB	30.1 KiB
Logo Xarxa Vives `ul.row > li > a > img`	www.uab.cat/Imatge/688/150/logo-XVU,0.png	14.0 KiB	13.5 KiB
Logotip HR Excellence in Research `ul.row > li > a > img`	www.uab.cat/Imatge/423/772/logo-hr,0.png	8.6 KiB	7.7 KiB
Logo ECIU University `ul.row > li > a > img`	www.uab.cat/Imatge/615/621/logo-ECIU,0.png	7.6 KiB	7.0 KiB
Logo Xarxa EUA `ul.row > li > a > img`	www.uab.cat/Imatge/554/849/logo-EUA,0.png	6.1 KiB	5.9 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: Del 16 al 24 d'abril XVI edició de la Setmana Saludable i Sostenible Saber-ne …

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

selector: div.owl-stage-outer > div.owl-stage > div.owl-item > div.slide

snippet: <div role="listitem" class="slide" style="background-image: url("/Imatge/359/47/SetmanaSiS.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.

URL	Protocol
www.uab.cat/	http/1.1
www.uab.cat/Xcelerate/WAI/font/Mona-Sans.woff2	http/1.1
www.uab.cat/Xcelerate/WAI/font/Hubot-Sans.woff2	http/1.1
www.uab.cat/Xcelerate/WAI/css/sites/portal.css	http/1.1
www.uab.cat/Xcelerate/WAI/css/vendor/owl/owl.carousel.min.css	http/1.1
www.uab.cat/Xcelerate/WAI/js/utils.min.js	http/1.1
www.uab.cat/Xcelerate/WAI/js/vendor/owl/owl.carousel.min.js	http/1.1
www.uab.cat/Imatge/993/829/estudis-estudiants.jpg	http/1.1
www.uab.cat/Imatge/654/779/RecercaUAB.jpg	http/1.1
www.uab.cat/Imatge/236/470/serveis,10.jpg	http/1.1
www.uab.cat/Imatge/381/231/2026_Frida-38_web.jpg	http/1.1
www.uab.cat/Imatge/1008/171/infok.jpg	http/1.1
www.uab.cat/Imatge/129/950/LLORO-KEA-DISCAPACITAT_XimenaNelsonUC-ok.jpg	http/1.1
www.uab.cat/Imatge/788/485/IIJornadaTransferenciaCSiH.png	http/1.1
www.uab.cat/Imatge/944/99/jugato1_web.jpeg	http/1.1
www.uab.cat/Imatge/927/888/IncendiOdena_LidarTeam_2016_webUAB.jpg	http/1.1
www.uab.cat/Imatge/820/399/PDCOGs_Graphical_Abstract.jpg	http/1.1
www.uab.cat/Imatge/270/56/TaulaPicnic,1.jpg	http/1.1
www.uab.cat/Imatge/151/373/grasa,1.jpg	http/1.1
www.uab.cat/Imatge/228/670/rtve,2.jpg	http/1.1
www.uab.cat/Imatge/104/593/vang15IV.jpg	http/1.1
www.uab.cat/Imatge/269/988/eldiaries.jpg	http/1.1
www.uab.cat/Imatge/423/772/logo-hr,0.png	http/1.1
www.uab.cat/Imatge/615/621/logo-ECIU,0.png	http/1.1
www.uab.cat/Imatge/554/849/logo-EUA,0.png	http/1.1
www.uab.cat/Imatge/688/150/logo-XVU,0.png	http/1.1
www.uab.cat/Imatge/699/912/logo-A4U,0.png	http/1.1
www.uab.cat/Xcelerate/WAI/img/icones.svg#icona-dropdown	http/1.1
www.uab.cat/Xcelerate/WAI/img/UAB-2linies-verd.svg	http/1.1
www.uab.cat/Xcelerate/WAI/img/UAB-legal.svg	http/1.1
www.uab.cat/Imatge/359/47/SetmanaSiS.jpg	http/1.1
www.uab.cat/Imatge/888/639/portada25.jpg	http/1.1
www.uab.cat/Imatge/426/80/imatge02.jpg	http/1.1
www.uab.cat/Imatge/299/982/imatge03.jpg	http/1.1
www.uab.cat/Imatge/857/117/25fotocampus.jpg	http/1.1
www.uab.cat/Xcelerate/WAI/img/simbol.png	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.

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

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
www.uab.cat/Xcelerate/WAI/css/sites/portal.css	23.0 KiB	102 ms
www.uab.cat/Xcelerate/WAI/css/vendor/owl/owl.carousel.min.css	1.4 KiB	152 ms
code.jquery.com/jquery-3.4.1.slim.min.js	24.1 KiB	240 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: 236 ms

URL	Time Spent
uab.cat/	236 ms
www.uab.cat/	0.0 ms

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
Enllaços directes Estudis Graus Màsters i Postgraus Doctorats Aliança europea E… `body > main#contingut > section#conj-targetes-menu-1`	0.316

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 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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

Source: Google web.dev / Lighthouse

Estimated savings: 200 ms 228.4 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-2CH1808E6F&cx=c&gtm=4e64k0	172.7 KiB	65.9 KiB
www.googletagmanager.com/gtag/js?id=AW-1032775476&cx=c&gtm=4e64k0	136.3 KiB	63.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-PW3QBZ4	155.7 KiB	63.5 KiB
/e3f09dda-a690-4207-be93-92a2217eddc0/cc.js?renew=false&r...	92.2 KiB	35.3 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 17.1 KiB

URL	Transfer Size	Est Savings
www.uab.cat/Xcelerate/WAI/css/sites/portal.css	22.6 KiB	17.1 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.

URL	Transfer Size
www.uab.cat/Imatge/857/117/25fotocampus.jpg	1.9 MiB
www.uab.cat/Imatge/359/47/SetmanaSiS.jpg	808.9 KiB
www.uab.cat/Imatge/788/485/IIJornadaTransferenciaCSiH.png	722.1 KiB
www.uab.cat/Imatge/236/470/serveis,10.jpg	412.1 KiB
www.uab.cat/Imatge/299/982/imatge03.jpg	373.3 KiB
www.uab.cat/Imatge/927/888/IncendiOdena_LidarTeam_2016_webUAB.jpg	328.8 KiB
www.uab.cat/Imatge/426/80/imatge02.jpg	308.1 KiB
www.uab.cat/Imatge/381/231/2026_Frida-38_web.jpg	270.6 KiB
www.uab.cat/Imatge/888/639/portada25.jpg	256.3 KiB
www.uab.cat/Imatge/654/779/RecercaUAB.jpg	252.8 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
Logotip HR Excellence in Research `ul.row > li > a > img`	www.uab.cat/Imatge/423/772/logo-hr,0.png
Logo ECIU University `ul.row > li > a > img`	www.uab.cat/Imatge/615/621/logo-ECIU,0.png
Logo Xarxa Vives `ul.row > li > a > img`	www.uab.cat/Imatge/688/150/logo-XVU,0.png
Logo Xarxa EUA `ul.row > li > a > img`	www.uab.cat/Imatge/554/849/logo-EUA,0.png
Aliança 4 Universitats `ul.row > li > a > img`	www.uab.cat/Imatge/699/912/logo-A4U,0.png

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

●Optimize DOM size

●Font display

●Forced reflow

●LCP breakdown

●Optimize viewport for mobile

●Max Potential First Input Delay 60 ms

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 5 user timings

●JavaScript execution time 0.2 s

●Minimizes main-thread work 0.5 s

●Avoid long main-thread tasks 1 long task found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 50 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 20 ms

○INP breakdown

○Avoid non-composited animations

Accessibility

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
ABR. 23 10è Congrés Internacional sobre el Control de la Fertilitat de la Fauna… `main#contingut > section#conj-agenda-carousel-1 > div.container > div#agenda-carousel-1`
La UAB acull la primera reunió internacional del projecte europeu FRIDA La UAB … `main#contingut > section#conj-noticies-carousel-1 > div.container > div#noticies-carousel-1`
Una universitat pública i capdavantera en els rànquings internacionals UAB, un… `body > main#contingut > section#conj-promocio-carousel-2 > div#promocio-carousel-2`

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.

○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]`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

●`[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 are distinguishable without relying on color.

●Links have a discernible name

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

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○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 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

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○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

○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.

○`[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.

○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

○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`

Results for https://uab.cat

Site Health

How you compare

Top Priorities (5)

Fix Priority Matrix

Quick Wins

Strategic

Easy Improvements

Deprioritize

What fixing these means

Conversion Barriers

Speed (2)

Trust (2)

Usability (1)

Content (1)

Navigation (2)

Return on Investment

Investment

Monthly returns

Regulatory risk avoided

Estimated Remediation Cost

Cost by category

Cost by effort level

What Inaction Is Costing You

Compliance Risk

Bandwidth Waste

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

ARIA

Best Practices

SEO

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

ARIA

Best Practices

SEO

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