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Lighthouse Desktop

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

Audit breakdown by category with detailed findings.

55

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
uba.ar/storage/Vay0PyQmz0QM4FfFldiTSOYvlEjca339XJsfZy45.jpg0.0 ms510.1 KiB
uba.ar/storage/uNfrxusKCC50Bom0LbeIoCTvzAczgOTXbX9Cblss.jpg0.0 ms488.6 KiB
uba.ar/storage/dKgViUZh5ILVIAFi4tniGlfm93oXAngCvqoL2kpI.jpg0.0 ms276.6 KiB
uba.ar/storage/WqKOPBKn5jt9GAzGfwrbdWlsQWUsM1hmoupRaMHd.jpg0.0 ms271.2 KiB
www.uba.ar/storage/WinpAOvN6NMBPT8tHiFltrvz8NmHyktV4ngNu59S.jpg0.0 ms263.5 KiB
www.uba.ar/storage/vWqLuWCXvO8kGxbp30TJtsxYTJ6ymqKumIg06H4s.jpg0.0 ms216.2 KiB
uba.ar/storage/IHrJslIlTzvUqACDY9U4BV1JoRe4QC6EDzPL4y0c.jpg0.0 ms179.0 KiB
www.uba.ar/storage/7EZzjiWzkwloNnXTmlPqunMGpyq3ouPta9jc6ecK.jpg0.0 ms171.3 KiB
www.uba.ar/storage/So7h828AC01tEkjnMOgFfahBlLrB903UX1UIbVrC.jpg0.0 ms71.5 KiB
uba.ar/fonts/bitter-regular-webfont.woff20.0 ms22.0 KiB
uba.ar/fonts/bitter-bold-webfont.woff20.0 ms21.4 KiB
uba.ar/imgs/logoheader40anios.png0.0 ms6.6 KiB
uba.ar/imgs/logofooter.png0.0 ms6.1 KiB
www.uba.ar/css/style.css0.0 ms5.7 KiB
www.uba.ar/css/animate.css0.0 ms5.3 KiB
www.uba.ar/css/noticias.css0.0 ms2.6 KiB
www.uba.ar/js/busqueda_general_min.js0.0 ms484 B
uba.ar/videos/video-lohiciste.mp40.0 ms0 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
uba.ar/fonts/bitter-regular-webfont.woff23.0 s
uba.ar/fonts/bitter-bold-webfont.woff23.0 s
/npm/bootstrap-icons@1.10.3/font/fonts/bootstrap-icons.wo...5.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
div.row > div.col > div.card > img.card-img-top div.row > div.col > div.card > img.card-img-top
uba.ar/storage/Vay0PyQmz0QM4FfFldiTSOYvlEjca339XJsfZy45.jpg509.4 KiB498.3 KiB
div.row > div.col > div.card > img.card-img-top div.row > div.col > div.card > img.card-img-top
uba.ar/storage/WqKOPBKn5jt9GAzGfwrbdWlsQWUsM1hmoupRaMHd.jpg270.7 KiB259.6 KiB
div.col-12 > div.row > div.col-12 > div.col-md-6 div.col-12 > div.row > div.col-12 > div.col-md-6
www.uba.ar/storage/WinpAOvN6NMBPT8tHiFltrvz8NmHyktV4ngNu59S.jpg263.1 KiB238.0 KiB
div#sliderFotos > div.carousel-inner > div.carousel-item > img.d-block div#sliderFotos > div.carousel-inner > div.carousel-item > img.d-block
uba.ar/storage/dKgViUZh5ILVIAFi4tniGlfm93oXAngCvqoL2kpI.jpg276.2 KiB145.9 KiB
div.col-12 > div.row > div.col-12 > div.col-md-6 div.col-12 > div.row > div.col-12 > div.col-md-6
www.uba.ar/storage/7EZzjiWzkwloNnXTmlPqunMGpyq3ouPta9jc6ecK.jpg171.0 KiB145.9 KiB
VER MÁS div.container-fluid > div.row > div.col-12 > img.img-fluid
www.uba.ar/storage/vWqLuWCXvO8kGxbp30TJtsxYTJ6ymqKumIg06H4s.jpg215.8 KiB109.1 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:16446.75 label:Time to first byte subpart:timeToFirstByte] map[duration:15914.47 label:Element render delay subpart:elementRenderDelay]]
lhId: page-6-P
nodeLabel: SIN APLICAR LA LEY DE FINANCIAMIENTO UNIVERSITARIO. LA UNIVERSIDAD PÚBLICA NO …
path: 1,HTML,1,BODY,3,DIV,0,DIV,0,DIV,1,DIV,3,DIV,0,P
selector: div.modal-content > div.modal-body > div.contador-texto > p.mb-4
snippet: <p class="mb-4">

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.

URLTransfer SizeDuration
www.uba.ar/css/animate.css5.3 KiB7.8 s
www.uba.ar/css/noticias.css2.6 KiB
www.uba.ar/css/style.css5.7 KiB709 ms
cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css31.6 KiB240 ms
cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/js/bootstrap.min.js16.6 KiB
cdn.jsdelivr.net/npm/@popperjs/core@2.11.8/dist/umd/popper.min.js7.1 KiB
cdn.jsdelivr.net/npm/bootstrap-icons@1.10.3/font/bootstrap-icons.css13.1 KiB
cdn.jsdelivr.net/npm/bootstrap-icons@1.9.1/font/bootstrap-icons.css11.8 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 15.8 s
URLTime Spent
uba.ar/15.9 s

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: 0.0 ms 52.2 KiB
URLTransfer SizeEst Savings
cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css31.1 KiB28.1 KiB
cdn.jsdelivr.net/npm/bootstrap-icons@1.10.3/font/bootstrap-icons.css12.6 KiB12.6 KiB
cdn.jsdelivr.net/npm/bootstrap-icons@1.9.1/font/bootstrap-icons.css11.7 KiB11.6 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 68.3 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-0ST2QP5PEG161.2 KiB68.3 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
uba.ar/storage/Vay0PyQmz0QM4FfFldiTSOYvlEjca339XJsfZy45.jpg510.1 KiB
uba.ar/storage/uNfrxusKCC50Bom0LbeIoCTvzAczgOTXbX9Cblss.jpg488.6 KiB
uba.ar/storage/dKgViUZh5ILVIAFi4tniGlfm93oXAngCvqoL2kpI.jpg276.6 KiB
uba.ar/storage/WqKOPBKn5jt9GAzGfwrbdWlsQWUsM1hmoupRaMHd.jpg271.2 KiB
www.uba.ar/storage/WinpAOvN6NMBPT8tHiFltrvz8NmHyktV4ngNu59S.jpg263.5 KiB
www.uba.ar/storage/vWqLuWCXvO8kGxbp30TJtsxYTJ6ymqKumIg06H4s.jpg216.2 KiB
uba.ar/storage/IHrJslIlTzvUqACDY9U4BV1JoRe4QC6EDzPL4y0c.jpg179.0 KiB
www.uba.ar/storage/7EZzjiWzkwloNnXTmlPqunMGpyq3ouPta9jc6ecK.jpg171.3 KiB
www.googletagmanager.com/gtag/js?id=G-0ST2QP5PEG161.5 KiB
/npm/bootstrap-icons@1.10.3/font/fonts/bootstrap-icons.wo...118.7 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
div#sliderFotos > div.carousel-inner > div.carousel-item > img.d-block div#sliderFotos > div.carousel-inner > div.carousel-item > img.d-block
uba.ar/storage/dKgViUZh5ILVIAFi4tniGlfm93oXAngCvqoL2kpI.jpg
div.row > div.col > div.card > img.card-img-top div.row > div.col > div.card > img.card-img-top
uba.ar/storage/Vay0PyQmz0QM4FfFldiTSOYvlEjca339XJsfZy45.jpg
div.row > div.col > div.card > img.card-img-top div.row > div.col > div.card > img.card-img-top
uba.ar/storage/WqKOPBKn5jt9GAzGfwrbdWlsQWUsM1hmoupRaMHd.jpg
div.row > div.col > div.card > img.card-img-top div.row > div.col > div.card > img.card-img-top
uba.ar/storage/uNfrxusKCC50Bom0LbeIoCTvzAczgOTXbX9Cblss.jpg
VER MÁS div.container-fluid > div.row > div.col-12 > img.img-fluid
www.uba.ar/storage/vWqLuWCXvO8kGxbp30TJtsxYTJ6ymqKumIg06H4s.jpg
UBA Universidad de Buenos Aires header#inicio > nav.navbar > a.navbar-brand > img
uba.ar/imgs/logoheader40anios.png
UBA Universidad de Buenos Aires div.row > div.col-12 > a.mb-2 > img.img-fluid
uba.ar/imgs/logofooter.png

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

●Layout shift culprits
●Optimize DOM size
●Forced reflow
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 20 ms
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 5 user timings
●JavaScript execution time 0.1 s
●Minimizes main-thread work 0.3 s
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 670 ms
●Server Backend Latencies 6,260 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
○LCP request discovery
○Avoid long main-thread tasks
○Avoid non-composited animations
78

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

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.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
183 DÍAS 00 HORAS 36 MINUTOS 57 SEGUNDOS SIN APLICAR LA LEY DE FINANCIAMIENTO … body.modal-open > div#popupContador182

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
FACULTADES Y CARRERAS div.row > div.col-12 > a.stretched-link > h2
COLEGIOS div.row > div.col-12 > a.stretched-link > h2
POSGRADOS div.row > div.col-12 > a.stretched-link > h2
INVESTIGACIÓN div.row > div.col-12 > a.stretched-link > h2
COMUNIDAD UBA div.col-md-6 > a.stretched-link > div.f-blanco > h1
UNIVERSIDAD Y SOCIEDAD div.col-md-6 > a.stretched-link > div.f-blanco > h1
UBA NOTICIAS div.container-fluid > div.d-flex > div.me-auto > h2
VISITÁ EL PORTAL div.d-flex > div.ms-auto > a.f-blanco > span.d-none
JORNADA DE VISIBILIZACIÓN div.col > div.card > div.card-body > h5
EVITAR LA PROGRESIÓN div.col > div.card > div.card-body > h5
CREANDO CONCIENCIA div.col > div.card > div.card-body > h5
UBA CIENCIA div.container-fluid > div.d-flex > div.me-auto > h2
VISITÁ EL PORTAL div.d-flex > div.ms-auto > a.f-blanco > span.d-none
VER MÁS div.row > div.col-12 > div.position-absolute > a.btn-uba
Por más graduad@s div.col-12 > a.stretched-link > div.f-blanco > h1.f-blanco
Donar aquí Para las Becas Sarmiento a.stretched-link > div.f-blanco > h6.f-blanco > p
00 div.modal-body > div.contador-tiempo-grid > div.contador-tiempo-item > div#contadorHoras
HORAS div.modal-body > div.contador-tiempo-grid > div.contador-tiempo-item > div.contador-tiempo-label
36 div.modal-body > div.contador-tiempo-grid > div.contador-tiempo-item > div#contadorMinutos
MINUTOS div.modal-body > div.contador-tiempo-grid > div.contador-tiempo-item > div.contador-tiempo-label
57 div.modal-body > div.contador-tiempo-grid > div.contador-tiempo-item > div#contadorSegundos
SEGUNDOS div.modal-body > div.contador-tiempo-grid > div.contador-tiempo-item > div.contador-tiempo-label
LEY DE FINANCIAMIENTO UNIVERSITARIO. div.modal-body > div.contador-texto > p.mb-4 > span.texto-amarillo
CUIDEMOS LO QUE FUNCIONA. div.modal-content > div.modal-body > div.contador-texto > p.texto-amarillo-2

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Derechos Humanos div.carousel-item > div.caja > div > h4.mt-4
JORNADA DE VISIBILIZACIÓN div.col > div.card > div.card-body > h5
EVITAR LA PROGRESIÓN div.col > div.card > div.card-body > h5
CREANDO CONCIENCIA div.col > div.card > div.card-body > h5
Donar aquí Para las Becas Sarmiento   div.col-12 > a.stretched-link > div.f-blanco > h6.f-blanco

These are opportunities to improve keyboard navigation in your application.

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#navbarNav > ul.navbar-nav > li.nav-item > a.nav-link div#navbarNav > ul.navbar-nav > li.nav-item > a.nav-link
div.row > ul.nav > li > a div.row > ul.nav > li > a
div.row > ul.nav > li.ms-2 > a div.row > ul.nav > li.ms-2 > a
div.row > ul.nav > li.ms-2 > a div.row > ul.nav > li.ms-2 > a
div.row > ul.nav > li.ms-2 > a div.row > ul.nav > li.ms-2 > a
div.row > ul.nav > li.ms-2 > a div.row > ul.nav > li.ms-2 > a
div.row > ul.nav > li.ms-2 > a div.row > ul.nav > li.ms-2 > a
div.row > ul.nav > li.ms-2 > a div.row > ul.nav > li.ms-2 > a

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
seguinos!!!! footer.px-md-3 > div.col-12 > div.row > ul.nav

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Identical links have the same purpose.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○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
○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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Detected JavaScript libraries
92

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Crawling and Indexing

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

To appear in search results, crawlers need access to your app.

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

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