Kilotest: Violations of attribute value invalid issue for Prometheus page

Here are the HTML elements reported to violate rules belonging to the attribute value invalid issue.

Basics

About the attribute value invalid issue

Why it matters: Item behaves improperly

Priority: highest

Related WCAG standard: 1.3.1

Violator count: 16

Reported by 1 tool (Html Checker API)

About the Prometheus page

URL: https://www.joinprometheus.org/

Tested by job 2ft on 2026-04-07 at 19:19

Violators

1. Element 1288

   • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/footer[1]/div[2]/div[2]/div[1]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[5]/div[1]/div[1]/div[1]/div[1]/div[1]/form[1]/fieldset[1]/div[1]/div[1]
   • Tag name: DIV
   • Text: Subscribe to our newsletter … Subscribe
   • Reported by Html Checker API
   • What diagnoses were reported?

2. Element 1344

   • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/footer[1]/div[2]/div[2]/div[1]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[7]/a[1]
   • Tag name: A
   • Reported by Html Checker API
   • What diagnoses were reported?

3. Element 664

   • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/main[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[1]/div[1]/section[1]/div[2]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[4]/div[1]/img[1]
   • Tag name: IMG
   • Reported by Html Checker API
   • What diagnoses were reported?

4. Element 761

   • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/main[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[1]/div[1]/section[3]/div[2]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[10]/div[1]/img[1]
   • Tag name: IMG
   • Reported by Html Checker API
   • What diagnoses were reported?

5. Element 764

   • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/main[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[1]/div[1]/section[3]/div[2]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[11]/div[1]/img[1]
   • Tag name: IMG
   • Reported by Html Checker API
   • What diagnoses were reported?

6. Element 767

   • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/main[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[1]/div[1]/section[3]/div[2]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[12]/div[1]/img[1]
   • Tag name: IMG
   • Reported by Html Checker API
   • What diagnoses were reported?

7. Element 749

   • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/main[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[1]/div[1]/section[3]/div[2]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[6]/div[1]/img[1]
   • Tag name: IMG
   • Reported by Html Checker API
   • What diagnoses were reported?

8. Element 752

   • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/main[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[1]/div[1]/section[3]/div[2]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[7]/div[1]/img[1]
   • Tag name: IMG
   • Reported by Html Checker API
   • What diagnoses were reported?

9. Element 755

   • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/main[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[1]/div[1]/section[3]/div[2]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[8]/div[1]/img[1]
   • Tag name: IMG
   • Reported by Html Checker API
   • What diagnoses were reported?

10. Element 758

    • XPath: /html/body/div[1]/div[1]/div[3]/div[1]/main[1]/div[1]/div[1]/div[1]/div[2]/div[1]/div[1]/div[1]/section[3]/div[2]/div[1]/section[1]/div[2]/div[1]/div[2]/div[1]/div[9]/div[1]/img[1]
    • Tag name: IMG
    • Reported by Html Checker API
    • What diagnoses were reported?

11. Element 87

    • XPath: /html/body/script[2]
    • Tag name: SCRIPT
    • Reported by Html Checker API
    • What diagnoses were reported?

12. Element 88

    • XPath: /html/body/script[3]
    • Tag name: SCRIPT
    • Reported by Html Checker API
    • What diagnoses were reported?

13. Element 1409

    • XPath: /html/body/script[43]
    • Tag name: SCRIPT
    • Reported by Html Checker API
    • What diagnoses were reported?

14. Element 1410

    • XPath: /html/body/script[44]
    • Tag name: SCRIPT
    • Reported by Html Checker API
    • What diagnoses were reported?

15. Element 24

    • XPath: /html/head[1]/script[12]
    • Tag name: SCRIPT
    • Reported by Html Checker API
    • What diagnoses were reported?

16. Element 35

    • XPath: /html/head[1]/script[13]
    • Tag name: SCRIPT
    • Reported by Html Checker API
    • What diagnoses were reported?