Kilotest: Diagnoses of attribute value invalid violation by HTML element 685 on Prometheus page

Basics

About the Prometheus page

• URL: https://www.joinprometheus.org/
• Tested 29 days ago by job hzk on 2026-05-03 at 17:00

About HTML element 685

• Tag name: IMG
• Text: [not applicable]
• Start tag: <img fetchpriority="high" sizes="92px" srcset="https://static.wixstatic.com/media/c8e9df_2c4ed5a59b574db8a21cc882a812d47e~mv2.png/v1/fill/w_92,h_29,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/Logo2_2x.png 1x, https://static.wixstatic.com/media/c8e9df_2c4ed5a59b574db8a21cc882a812d47e~mv2.png/v1/fill/w_184,h_58,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/Logo2_2x.png 2x" id="img_comp-lhur36ln" src="https://static.wixstatic.com/media/c8e9df_2c4ed5a59b574db8a21cc882a812d47e~mv2.png/v1/fill/w_92,h_29,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/Logo2_2x.png" alt="Pro" style="object-fit:cover" class="BI8PVQ Tj01hh" width="92" height="29">
• XPath: [not obtained]
• Bounding box: x = 471, y = 545, width = 92, height = 29

About the attribute value invalid issue

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

Diagnoses

Here is how tools diagnose the attribute value invalid issue for HTML element 685 of the Prometheus page.

1. Bad value for attribute srcset on element img: Expected width descriptor but found 1x at …ogo2_2x.png 1x,. (When the sizes attribute is present, all image candidate strings must specify a width.)

   Tool: Html Checker API (World Wide Web Consortium)