Skip to content
https://upc.edu

Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
52
GRADE
F
FIX
7
REVIEW
2
PASS
4
INFO
0
Checks
13
4 PASS 2 REVIEW 7 FIX
F
Alt Text Quality
Action
6 of 57 images have issues
FIX
6 of 57 images have issues
Critical::
4 image(s) missing alt attribute
Images without alt text are invisible to screen readers.
Critical::
3 image-in-link without alt text
An image inside a link with no alt creates an empty link.
Warning::
2 image(s) with generic alt text
Info::
5 image(s) with alt text over 125 characters
Info::
19 decorative image(s) correctly marked
Info::
27 image(s) with good alt text
57 images 27 good alt text 19 decorative 2 generic 4 missing
IssueCount
missing4 image(s)
generic2 image(s)
too long5 image(s)

Images without alt text are invisible to screen readers.

Why this matters

Each image without alt text is a WCAG 1.1.1 failure — invisible to screen-reader users, lost from Google Image Search.

Learn more ▾

WCAG 2.1 Level A requires text alternatives for non-decorative images. Empty alt='' is fine for decorative; meaningful images need descriptive text. Common fixes: CMS audit + bulk add, build-time linter (alt-text-required ESLint rule), CI gate on Lighthouse a11y score.

Source: WCAG 2.1 SC 1.1.1 / WebAIM Million Report

An image inside a link with no alt creates an empty link.

Why this matters

Image-only links with no alt create empty links — screen-reader users hear 'link' with no destination context.

Learn more ▾

An <a><img></a> with no img alt is the worst-case for accessibility: AT announces the link but can't describe where it goes. Either add alt to the image OR add aria-label to the link.

Source: WCAG 2.1 SC 2.4.4

F
404 Error Page
Action
HTTP 404, bare page
FIX
HTTP 404, bare page
Info::
Correct 404 status code returned
Got: HTTP 404
Warning::
Bare server default 404 page
The 404 page has no custom styling. Users hitting a broken link see a generic error with no way to navigate back. Add a custom 404 page with your site navigation and a search bar.
404 Page Quality Default 404 Page
Status Code HTTP 404 ✓Custom Styling ✗Navigation ✗Homepage Link ✗Search Form ✗
F
Favicon & Branding
Action
2 icon(s) detected
FIX
2 icon(s) detected
Info::
favicon.ico present at site root
Info::
HTML icon links detected
Info::
No apple-touch-icon detected
iOS devices use this when users add your site to their home screen. Add <link rel='apple-touch-icon' sizes='180x180' href='/apple-touch-icon.png'>.
✓ favicon.ico Present
✓ PNG Icons Present
✗ Apple Touch Missing
✗ SVG Favicon Missing
✗ Manifest Icons Missing
✗ Multiple Sizes Missing
D
Web Manifest
Action
Not found
FIX
Not found
Info::
No web manifest found
No manifest at standard paths (/manifest.json, /site.webmanifest). A manifest is optional but enables PWA features like home screen installation and standalone display.

No web manifest found.

D
Dark Mode Support
Action
No dark mode signals
FIX
No dark mode signals
Info::
No dark mode signals detected
Consider adding CSS with @media (prefers-color-scheme: dark) and <meta name='color-scheme' content='light dark'>.
Info::
Detection limited to meta tags and inline styles
External CSS files may contain prefers-color-scheme rules not visible to this scan.
Dark ModeNo Dark Mode Detected
color-scheme meta Not set ✗Dark theme-color Not set ✗CSS indicators Not detected ✗

Detection limited to meta tags and inline styles.

D
Print Stylesheet
Action
No print styles
FIX
No print styles
Info::
No print-specific styles detected
When users print this page, they get the screen layout including navigation and non-essential elements. Add @media print rules to hide navigation and optimize layout for paper.
Print Stylesheet No Print Styles
Print stylesheet Not found ✗Inline @media print Not detected ✗
F
Navigation UX
Action
1 navigation pattern(s)
FIX
1 navigation pattern(s)
Info::
Search functionality detected
Got: role-search
Info::
3 navigation landmark(s) detected
Breadcrumbs
Search role='search' landmark
Skip Link
Labeled Navigation 3 <nav> element(s)
Back to Top
Hamburger Menu
Sticky Navigation Cannot reliably detect (CSS-based)
2 of 6 testable patterns navigation patterns detected. Limited navigation support. Consider adding breadcrumbs, search, and skip link.
B
Lighthouse Accessibility Audits
Score 85/100 — 5 failing, 31 passed
REVIEW
85

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

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
PRODUCTIVA la UPC, entre les universitats liders de l'Estat pel que fa al seu r… div > div.container > div#carousel-example-generic > 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.

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
Accepta-ho tot div.sc-koXPp > div.sc-iHGNWf > div.sc-bmzYkS > button.sc-gsFSXq
Rebutja-ho tot div.sc-koXPp > div.sc-iHGNWf > div.sc-bmzYkS > button.sc-gsFSXq

These are opportunities to improve the legibility of your content.

Names and labels

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
li.col-md-3 > a.event-img > picture > img li.col-md-3 > a.event-img > picture > img
li.col-md-3 > a.event-img > picture > img li.col-md-3 > a.event-img > picture > img
li.col-md-3 > a.event-img > picture > img li.col-md-3 > a.event-img > picture > img
li.col-md-3 > a.event-img > picture > img li.col-md-3 > a.event-img > picture > img
div.col-lg-4 > a.a-multimedia > div.news-video > img div.col-lg-4 > a.a-multimedia > div.news-video > img
div.col-lg-4 > a.a-multimedia > div.news-video > img div.col-lg-4 > a.a-multimedia > div.news-video > img
div.col-lg-4 > a.a-multimedia > div.news-video > img div.col-lg-4 > a.a-multimedia > div.news-video > img

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
section > div.row > div.col-lg-4 > a.a-multimedia section > div.row > div.col-lg-4 > a.a-multimedia
section > div.row > div.col-lg-4 > a.a-multimedia section > div.row > div.col-lg-4 > a.a-multimedia
section > div.row > div.col-lg-4 > a.a-multimedia section > div.row > div.col-lg-4 > a.a-multimedia

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

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Mapa del web nav#complimentary-footer-nav > ul#footer-menu-complementari > li > a
Accessibilitat nav#complimentary-footer-nav > ul#footer-menu-complementari > li > a

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
●`[role]`s are contained by their required parent element
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`[accesskey]` values are unique
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●ARIA toggle fields have accessible names
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
●`[lang]` attributes have a valid value
●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
●Uses ARIA roles only on compatible elements
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`button`, `link`, and `menuitem` elements 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 `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
○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.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○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.
A
Landmark Structure
9 landmarks
PASS
9 landmarks
Info::
<main> landmark present
Info::
3 <nav> landmark(s) found
Info::
All <nav> elements are properly labeled
Warning::
Skip navigation link is missing (WCAG 2.4.1)
Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.
Info::
Search landmark present
Page Structure — as a screen reader sees it
BANNER header NAV "Main" SEARCH MAIN ASIDE CONTENTINFO footer

Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.

Why this matters

Without a skip-nav link, keyboard users tab through every nav item before reaching content — every page, every visit.

Learn more ▾

WCAG 2.4.1 (Bypass Blocks) requires a mechanism to skip past repeated content. The standard implementation is a 'Skip to main content' link that's the first focusable element, visually hidden until focused. Three lines of HTML + four of CSS.

Source: WCAG 2.1 SC 2.4.1

A+
Heading Hierarchy
60 headings
PASS
60 headings
Info::
Single H1 present
  • H1 UPC. Universitat Politècnica de Catalunya
  • H2 Eines
  • H2 Navegació principal
  • H2 Jornades deportes obertes
  • H2 Novetats becageneral 2026-2027
  • H2 Sessions informatives
  • H2 Novetats màstersuniversitaris
  • H2 Escola de Doctorat
  • H2 Sessions informatives
  • H2 Microcredencialsuniversitàries
  • H2 Àrea d'R+D+I
  • H2 Ciència ciutadana
  • H2 Talent Hub
  • H2 UPCArts
  • H2 Bibliotècnica
  • H2 Jornades de portes obertes de grau. Inscriu-t'hi!
  • H2 Actualitat
  • H3 Una diada de llibres, música i roses a la Universitat
  • H3 LEIA UPC, el programa que articula l’Estratègia de la Intel·ligència Artificial de la UPC
  • H3 Arriba la final catalana del concurs CanSat, de l’ESA
  • H3 La UPC presenta l’Espai de Dades Agroalimentari
  • H3 Els presidents del Brasil, l’Uruguai i Mèxic visiten el BSC
  • H3 Creen teixits vius capaços de canviar de forma de manera programada
  • H3 Del 17 al 24 d'abril, campanya electoral de les eleccions al Claustre Universitari
  • H3 La UPC desxifra la revolució urbana d’Ildefons Cerdà
  • H3 6GLabNet UPC, nova infraestructura científica líder a l’Estat
  • H2 Vols estudiar a la UPC?
  • H2 Portal del futur estudiantat
  • H2 Màsters universitaris 2026-2027
  • H2 Beques i ajuts
  • H2 Programes de doctorat
  • H2 Màsters i postgraus de formació permanent
  • H2 Microcredencials universitàries
  • H2 Sessions informatives
  • H2 Viu la UPC
  • H2 Projectes impulsats per l'estudiantat
  • H2 Viu l'esport
  • H2 Descobreix tota l'oferta de cursos de Unite!
  • H2 Consulta el programa
  • H2 Els mitjans de comunicació destaquen
  • H3 RTVE. L'informatiu
  • H4 El valor pedagògic d'Artemis 2
  • H3 La Vanguardia
  • H4 La primera infraestructura per provar la 6G en entorns reals
  • H3 La Vanguardia
  • H4 Un nou mètode permet desxifrar el funcionament dels circuits del cervell
  • H3 Catalunya Ràdio
  • H4 Amb Miquel Sureda
  • H2 Espai multimèdia
  • H2 UPC, la millor decisió de la teva vida
  • H2 Durbec Aero, start-up de la UPC, present al 4YFN 2026
  • H2 Descobreix el Laboratori de l'Hidrogen de la UPC
  • H2 La UPC avui
  • H2 La UPC als rànquings internacionalsMés rànquings
  • H2 La UPC a les xarxes universitàries internacionals
  • H2 Segueix-nos
  • H2 Descarrega't l'App UPC
  • H2 Reconeixement internacional d’excel·lència
  • H2 Fons europeus
  • H2 Navegació
A+
Form Accessibility
All 1 controls labeled
PASS
All 1 controls labeled
Info::
1 control(s) properly labeled
1 controls
1 labeled
0 placeholder only
0 unlabeled
ControlTypeLabelMethod
#input-cercasearchCerca a la UPCfor/id
A+
Color Contrast (Screenshot)
20 text elements analyzed, 0 fail WCAG AA
PASS

Analyzes text contrast against the actual rendered page, including background images, gradients, and overlays that CSS-based tools cannot detect.

20 pass
Show all checked elements (20)
ElementRatioRequiredFGBGResult
h2 Eines8.18:13.0:1
#000000
#32A8FF
Pass
h2 Navegació principal21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Jornades de21.00:13.0:1
#000000
#FFFFFF
Pass
h2 portes obertes21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Novetats beca21.00:13.0:1
#000000
#FFFFFF
Pass
h2 general 2026-202721.00:13.0:1
#000000
#FFFFFF
Pass
h2 Jornades de portes o…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Actualitat21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Vols estudiar a la U…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Portal del futur est…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Màsters universitar…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Beques i ajuts21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Programes de doctora…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Màsters i postgraus…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Microcredencials uni…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Sessions informative…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Viu la UPC21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Consulta el programa21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Els mitjans de comun…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Espai multimèdia21.00:13.0:1
#000000
#FFFFFF
Pass

Methodology: The top 20 text elements by font size were checked. Background color was sampled from the desktop screenshot using a 5-point pattern. WCAG 2.1 AA requires 4.5:1 for normal text and 3:1 for large text.

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback