WordPress fix guide
Fix Duplicate IDs on WordPress
IDs must be unique in the DOM.
Check your live page
Canonical issue page: Duplicate IDs →
What this issue means
Fix
Rename duplicates; generate stable unique ids for lists rendered in loops.
How to fix on WordPress
In WordPress, fix the underlying theme or block output: child themes, block patterns, or plugin markup. Re-scan after updates—page builders often regress heading order or button names.
How to fix
Ensure ids are unique per document; generate stable unique ids in lists.
Fix templates so duplicated components do not reuse hard-coded ids.
Related: 4.1.1 Parsing (historically); best practice for robustness.
Other platforms
TestAccessibility · Programmatic fix page · localhost:3001