Page Title Updated by JavaScript

  • December 7, 2025
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Quick Reference

Element Code: ON-021

Issue: JavaScript modifies the title tag after page load

Impact: Potential mismatch between indexed title and displayed title

Fix: Keep title tag static in initial HTML

Detection: Compare View Source vs. browser tab

What Is This Issue?

When JavaScript changes your title tag after page load, users might see one title in their browser while Google may have indexed a different title. This inconsistency can affect both click-through rates and user trust.

How to Fix This Issue

  1. Keep Title Static: Don't modify title tags with client-side JavaScript
  2. Server-Side Changes: Handle dynamic titles on the server
  3. Test Consistency: Verify raw HTML and rendered titles match

TL;DR (The Simple Version)

JavaScript is changing your page title after it loads. This can cause mismatches between what Google shows and what users see. Keep your title tag consistent and don't modify it with JavaScript.

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