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Default listing renders an empty, focusable thumbnail link for posts without an image

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#15,066 0 comentarios 0 reacciones 0 asignados Ver en GitHub

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Nadie ha tomado este issue todavía.

Evaluación

Dificultad
2/5
Tiempo estimado
1-3 horas
Aptitud para principiantes
72/100
Tipo de issue
Error
Claridad
Bien especificado
Estado de actividad
Activo
Stack tecnológico
javascript, typescript
Área
accessibility, frontend

Línea de trabajo

Empieza con la plantilla item-default.ejs.md, donde la miniatura siempre está envuelta en una etiqueta a, y con emptyDiv() en website-listing-read.ts, que rellena el caso vacío. Para reproducirlo, renderiza un listado predeterminado con una publicación que no tenga imagen y comprueba en la salida si aparece el enlace sin nombre. Está terminado cuando una publicación sin imagen no tenga un enlace de miniatura enfocable, o tenga uno que sea aria-hidden con tabindex establecido en -1, y axe ya no informe de link-name para ella.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

accessibility bug listings
I have:
  • searched the issue tracker for similar issues
  • installed the latest version of Quarto CLI
  • formatted my issue following the Bug Reports guide
Bug description

In a default listing, a post with no preview image gets an empty thumbnail link.

item-default.ejs.md always wraps the thumbnail in <a href="...">.
When the post has no image and the listing sets no image-placeholder, emptyDiv() in website-listing-read.ts fills it with <div class="listing-item-img-placeholder">&nbsp;</div>.
The link has no accessible name, but it is still a Tab stop, so keyboard and screen reader users meet one unnamed link per post before its title link.
axe reports it as link-name (WCAG 2.4.4, 4.1.2).

The grid listing is not affected, as its whole card is one link with text.

This differs from #15038, where the thumbnail has an image without alt text, and from #7028, which asks for alt text on image-placeholder.

Steps to reproduce

_quarto.yml:

project:
  type: website
website:
  title: "Listing"

index.qmd:

---
title: "Posts"
listing:
  contents: posts
  type: default
---

posts/one/index.qmd:

---
title: "Post one"
date: 2026-01-01
---

Text without an image.

Render the website and inspect _site/index.html, or run axe on it.

Actual behavior
<div class="thumbnail"><a href="./posts/one/index.html" class="no-external">

<div class="listing-item-img-placeholder card-img-top" >&nbsp;</div>

</a></div>

axe: link-name on the thumbnail link of each post; the link is reachable with Tab and announced with no name.

Expected behavior

A post with no image gets no thumbnail link, or a link hidden from assistive technology and taken out of the tab order (aria-hidden="true" and tabindex="-1"), since the title link next to it already goes to the same page.

Your environment
  • IDE: none, rendered from the command line.
  • OS: macOS 27.0.
Quarto check output
quarto check

Quarto 99.9.9

[✓] Checking environment information...
      Quarto cache location: /Users/mcanouil/Library/Caches/quarto
      Project: none found (single-file mode)

[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.10.0: OK
      Dart Sass version 1.101.0: OK
      Deno version 2.7.14: OK
      Typst version 0.15.1: OK

[✓] Checking versions of quarto dependencies......OK

[✓] Checking Quarto installation......OK
      Version: 99.9.9
      commit: b86f98d382940bef6c65f37ea0bdfba844f19b6d
      Path: /Users/mcanouil/Projects/quarto-dev/quarto-cli/package/dist/bin

[✓] Checking tools....................OK
      TinyTeX: v2026.07
      Chrome Headless Shell: (not installed)
      VeraPDF: (not installed)

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /Users/mcanouil/Library/TinyTeX/bin/universal-darwin
      Version: 2026

[✓] Checking Chrome Headless....................OK
      Using: Chrome from QUARTO_CHROMIUM
      Path: /Applications/Brave Browser.app/Contents/MacOS/Brave Browser

[✓] Checking basic markdown render....OK

ℹ R version 4.6.1 (2026-06-24)
! Config '~/.Rprofile' was loaded!

[✓] Checking R installation...........OK
      Version: 4.6.1
      Path: /Library/Frameworks/R.framework/Versions/4.6/Resources
      LibPaths:
        - /Users/mcanouil/Library/R/arm64/4.6/library
        - /Library/Frameworks/R.framework/Versions/4.6/Resources/library
      knitr: 1.51
      rmarkdown: 2.31

[✓] Checking Knitr engine render......OK

[✓] Checking Python 3 installation....OK
      Version: 3.13.11
      Path: /Users/mcanouil/Projects/q2-tests/.venv/bin/python3
      Jupyter: (None)

      Jupyter is not available in this Python installation.
      Install with python3 -m pip install jupyter

[✓] Checking Julia installation...
Lenguaje dominante
JavaScript
Estrellas
6.1k
Forks
466
Merge medio
20 h 6 min
PR fusionados (30 d)
84

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