Cut First Contentful Paint by 45% with Targeted Script Load Optimizations
After auditing frontend performance on DentalPlans.com, I discovered that several first-party scripts were unnecessarily blocking rendering. These scripts were loaded too early, had tangled dependency chains, and weren’t leveraging modern load strategies like defer
.
I refactored the load order and resolved the dependency issues to ensure essential content could render without delay.
These changes dramatically improved front-end performance:
- First Contentful Paint dropped 45.4% (8.793s → 4.797s)
- Largest Contentful Paint improved by 65.8% (16.092s → 5.495s)
- Cumulative Layout Shift was nearly eliminated (0.844 → 0.142)
- Total Blocking Time saw a modest reduction (14.43s → 13.83s)
The result was a faster, more stable page load experience—which is especially critical for SEO and conversion.
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