Kilotest: Diagnoses of sizes attribute invalid
violation by HTML element 586 on 350 Sacramento page
Here is how tools diagnose the sizes attribute invalid
issue for HTML element 586 of the 350 Sacramento page.
Basics
- About the
sizes attribute invalid
issue- Why it matters: Item behaves improperly
- Priority: highest
- Related WCAG standard: 1.3.1
- About the 350 Sacramento page
- URL:
https://350sacramento.org/ - Tested on 2026-04-02 at 14:10
- URL:
- About HTML element 586
- Tag name:
IMG - Text: [not applicable]
- Start tag:
<img decoding="async" class="img-with-animation skip-lazy nectar-lazy" data-delay="0" height="360" width="640" data-animation="none" data-nectar-img-src="https://350sacramento.org/wp-content/uploads/2026/02/350-Sacramento-Earth-Day-Event.png" src="data:image/svg+xml;charset=utf-8,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20viewBox%3D'0%200%20640%20360'%2F%3E" alt="350 Sacramento Earth Day Climate Justice Community Event" data-nectar-img-srcset="https://350sacramento.org/wp-content/uploads/2026/02/350-Sacramento-Earth-Day-Event.png 640w, https://350sacramento.org/wp-content/uploads/2026/02/350-Sacramento-Earth-Day-Event-300x169.png 300w" sizes="(max-width: 640px) 100vw, 640px"> - XPath:
[not obtained] - Bounding box: x = 810, y = 4362, width = 300, height = 169
- Tag name:
Diagnoses
- The sizes attribute must only be specified if the srcset attribute is also specified.
Tool: Html Checker API (World Wide Web Consortium)