Kilotest: Diagnoses of attribute value invalid violation by HTML element 1057 on Cátedra UNESCO Legislación, Sociedad y Patrimonio page

Basics

About the Cátedra UNESCO Legislación, Sociedad y Patrimonio page

• URL: https://catedrapatrimonio.wixsite.com/ugto
• Tested 13 days ago by job auj on 2026-07-07 at 18:07

About HTML element 1057

• Tag name: IMG
• Text: [not applicable]
• Start tag: <img sizes="39px" srcset="https://static.wixstatic.com/media/a1b09fe8b7f04378a9fe076748ad4a6a.png/v1/fill/w_39,h_39,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/a1b09fe8b7f04378a9fe076748ad4a6a.png 1x, https://static.wixstatic.com/media/a1b09fe8b7f04378a9fe076748ad4a6a.png/v1/fill/w_78,h_78,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/a1b09fe8b7f04378a9fe076748ad4a6a.png 2x" id="img_0_comp-lb45g5jk" src="https://static.wixstatic.com/media/a1b09fe8b7f04378a9fe076748ad4a6a.png/v1/fill/w_39,h_39,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/a1b09fe8b7f04378a9fe076748ad4a6a.png" alt="YouTube" style="object-fit:cover" class="ZK9snE sFiSiq" width="39" height="39">
• XPath: [not obtained]
• Bounding box: x = 567, y = 6667, width = 39, height = 39

About the attribute value invalid issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1

Diagnoses

Here is how rule engines diagnose the attribute value invalid issue for HTML element 1057 of the Cátedra UNESCO Legislación, Sociedad y Patrimonio page.

1. Bad value for attribute srcset on element img: Expected width descriptor but found 1x at …8ad4a6a.png 1x,. (When the sizes attribute is present, all image candidate strings must specify a width.)

   Tool: Html Checker API (World Wide Web Consortium)