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A developer notices the page speed score is low due to render-blocking JavaScript. What is a good fix?

medium📝 Analysis Q6 of 15
SEO Fundamentals - Technical SEO Basics
A developer notices the page speed score is low due to render-blocking JavaScript. What is a good fix?
ADisable browser caching
BUse async or defer attributes on script tags
CIncrease image sizes to balance load
DRemove all JavaScript from the page
Step-by-Step Solution
Solution:

  1. Step 1: Identify render-blocking scripts problem

    Scripts that block rendering delay page display.

  2. Step 2: Apply async or defer to scripts

    These attributes allow scripts to load without blocking page rendering.

  3. Final Answer:

    Use async or defer attributes on script tags -> Option B

  4. Quick Check:

    Fix render-blocking = Use async/defer [OK]
Quick Trick: Add async or defer to scripts to avoid blocking [OK]
Common Mistakes:
  • Removing all JavaScript breaks functionality
  • Increasing image size slows page
  • Disabling caching reduces speed

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