Kilotest: Diagnoses of invalid character violation by HTML element 0 on Sightsavers page

Basics

About the page

• URL: https://www.sightsavers.org/
• Tested 3 days ago on 2026-10-07 at 22:23 by job 261007T2157-uwh
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 661
  • Violators: 289
  • Issues: 61
• Download the full technical report (JSON)

About the issue

• Why it matters: Invalid character makes the page behave incorrectly
• Priority: high
• Related WCAG standard: 4.1
• Reported by 1 rule engine (Html Checker)
• Violations: 1
• Violators: 1

About the violator

• Tag name: HTML
• Text: [not applicable]
• Start tag: <html class="no-js" lang="en-GB" prefix="og: https://ogp.me/ns#" style="overflow: hidden;">
• XPath: /html
• Bounding box: x = 0, y = 0, width = 1920, height = 1080
• Reported by Html Checker

Diagnoses

Here is how rule engines diagnose the invalid character issue for HTML element 0 of the Sightsavers page.

1. Saw " when expecting an attribute name. Probable cause: = missing immediately before. Extract: <img class="c-icon-card__image" src="/wp-content/uploads/2025/04/2504_Sightsavers-Esther-Nagetey-centre-moderates-the-Youth-Leadership-Now-event-580x326.png" alt="" ""="" d

   Rule engine: Html Checker (World Wide Web Consortium)

   Rule: Saw " when expecting an attribute name. Probable cause: = missing immediately before.