Performance monitoring helps reveal when later additions make the website harder to use. Choose representative pages and record measurements using a consistent method. Combine those checks with actual user feedback where available instead of relying on a single score.

A practical approach

Keep a change log beside the measurements. New scripts, larger imagery and template changes can affect behaviour in different ways. When a regression appears, the log narrows the investigation and helps the team decide whether the new feature justifies its cost.

Your checklist

  • Record a baseline after launch.
  • Repeat checks after substantial changes.
  • Assign someone to investigate meaningful regressions.

For example

If a service page becomes slower after adding several embedded videos, compare the same page before and after the change. That evidence supports a decision about deferred loading, fewer embeds or an alternative presentation.

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