CLS Too High

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Element Code: PE-039

Quick Reference

Issue: Cumulative Layout Shift over 0.1

Impact: Elements shifting unexpectedly

Fix: Add dimensions to media, reserve space

Detection: PageSpeed Insights

What Is This Issue?

CLS measures visual stability.

Why This Matters

User frustration.

How to Fix

  1. Size images
  2. Reserve ad space

Tools

  • PSI: CLS measurement

TL;DR

Get CLS under 0.1.

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