Kilotest: Diagnoses of ID not unique
violation by HTML element 0 on Mozilla Foundation page
Here is how tools diagnose the ID not unique
issue for HTML element 0 of the Mozilla Foundation page.
Basics
- About the
ID not unique
issue- Why it matters: User may be pointed to the wrong item
- Priority: highest
- Related WCAG standard: 4.1.1
- About the Mozilla Foundation page
- URL:
https://www.mozilla.org/en-US/ - Tested on 2026-04-03 at 03:56
- URL:
- About HTML element 0
- Tag name:
HTML - Text: [not applicable]
- Start tag:
<html class="osx js fx-unsupported x64 is-modern-browser mzp-has-sticky-navigation loaded" lang="en" dir="ltr" data-country-code="US" data-needs-consent="False" data-latest-firefox="149.0" data-esr-versions="140.9.0" data-gtm-container-id="GTM-MW3R8V" data-stub-attribution-rate="1.0" data-sentry-dsn="https://c3ab8514873549d5b3785ebc7fb83c80@o1069899.ingest.sentry.io/6260331"> - XPath:
/html - Bounding box: x = 0, y = 0, width = 1920, height = 8317
- Tag name:
Diagnoses
- Duplicate id attribute value "transcend-consent-manager" found on the web page.
Tool: WallyAX (Wally)