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Web PerformanceApr 2, 20266 min readDan Winslow

Before a Rebuild, Fix These Website Performance Basics

Oversized images, third-party scripts, shifting layouts, and slow fonts are common problems that can often be fixed without replacing the site.

Before a Rebuild, Fix These Website Performance Basics

A slow marketing site does not automatically need a new framework. Performance problems are often concentrated in a handful of assets and services. Measure a representative page on a real phone before planning a broad technical project.

Start with the largest visible image

The hero image is frequently the largest contentful paint element and one of the heaviest files. Serve it near its displayed dimensions, use a modern format, and do not lazy-load an image visible on arrival.

Images farther down the page can load later, but they still need width and height information. Reserved space prevents the page from jumping as files arrive.

Question every third-party script

Chat widgets, heat maps, ad trackers, embedded scheduling tools, and tag managers compete for the main thread. Some are worth the cost, but many remain long after anyone uses their data.

Remove abandoned tools first. Then delay nonessential scripts until after interaction or consent, and confirm that the remaining integrations still collect what the business needs.

In Short

  • Optimize the above-the-fold image before changing architecture.
  • Remove unused third-party scripts and delay the rest.
  • Pair lab tests with hands-on and real-user checks.
PerformanceCore Web VitalsSEO

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