Performance

What is Time to First Byte?

Time to First Byte (TTFB) measures how long a browser waits before receiving the first byte of a response from the server. A high TTFB usually points to slow hosting, backend processing, or missing caching.

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Related Performance terms

Core Web Vitals Largest Contentful Paint Cumulative Layout Shift Interaction to Next Paint Render-Blocking Resources Lazy Loading

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