
How to Run a Website Plugin Performance Audit
Use repeatable before-and-after tests to understand scripts, layout shifts, real user journeys, and whether a plugin earns its place.
Know where a feature runs before measuring what it costs. This collection separates personal browser extensions from website integrations, then follows a repeatable performance audit through representative pages and visitor journeys. Use the guides together to define the scope of a change and test it without confusing a faster page with a missing feature.

Use repeatable before-and-after tests to understand scripts, layout shifts, real user journeys, and whether a plugin earns its place.

Separate features that visitors receive from tools that only change your own browser, then evaluate permissions and installation scope.
Choose a guide based on the platform or workflow you actually use. Keep essential requirements separate from preferences, test with representative content, and record what remains uncertain. These articles offer practical evaluation methods rather than a universal product ranking. Continue through the eight plugin directories for official discovery routes, or read how the directory handles sources and corrections.