Performance and UX

Core Web Vitals

Also known as: CWV

User experience metrics covering main content loading, interaction response, and layout stability.

A practical example

A team analyzes LCP, INP, and CLS on users' devices.

What should I know?

Good scores cannot replace relevant offerings and useful content.

Performance and UX in practice

Assess real users' experiences on their devices. Lab tests help identify causes, while user data shows the scale of a problem. A good website also makes information easy to find and tasks easy to complete.

Related Semly features

See where this concept applies when working with Semly.

Google Search ConsoleConnect search data to Semly. Analyze queries and page performance when planning next steps.AI analyticsCompare visibility, position, sentiment, and brand share in AI answers.

Related terms

LCPThe time when the largest significant content element appears in the initial viewport.INPA measure of visual response delay to user interactions during a page visit.CLSA measure of unexpected movement of visible page layout elements.

Documentation and further reading

Definition prepared by Semly. Standards and behavior are described by their creators:

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