Duplicate IDs

No Comments

Element Code: HT-040

Quick Reference

Issue: ID attributes not unique

Impact: JavaScript/CSS issues

Fix: Make IDs unique

Detection: Validation

What Is This Issue?

IDs must be unique.

Why This Matters

Breaks selectors.

How to Fix

  1. Fix duplicate IDs

Tools

  • Validator: ID check

TL;DR

Make all IDs unique.

About SEO ProCheck

Technical SEO consulting and GEO strategy with 20 years of enterprise experience. Case studies, resources, and tools for search and AI visibility.

Learn more about me

Work With Me

Technical SEO audits, GEO strategy, site migrations, and international SEO. Hourly consulting for teams who need hands-on support, not just reports.

Contact now

Subscribe to our newsletter!

More from our blog


No Social Schema

Best practices guide for No Social Schema (SO-006). Priority: Low. Live check…
Continue reading

Missing Social Profile Links

Best practices guide for Missing Social Profile Links (SO-005). Priority: Low. Live…
Continue reading

Social Image Wrong Size

Best practices guide for Social Image Wrong Size (SO-004). Priority: Low. Live…
Continue reading

Social Image Missing

Best practices guide for Social Image Missing (SO-003). Priority: Medium. Live check…
Continue reading

Missing Twitter Cards

Best practices guide for Missing Twitter Cards (SO-002). Priority: Medium. Live check…
Continue reading

Missing Open Graph Tags

Best practices guide for Missing Open Graph Tags (SO-001). Priority: Medium. Live…
Continue reading

Mobile Resources Blocked

Best practices guide for Mobile Resources Blocked (MB-008). Priority: High. Batch check…
Continue reading

No Mobile Optimization

Best practices guide for No Mobile Optimization (MB-007). Priority: Critical. Batch check…
Continue reading
Prev. Post
Next Post

Recent Posts