How to Reduce TTFB in WordPress

Time to First Byte is primarily about how quickly the server begins returning a response. Fix it before trying to polish front-end rendering.

What TTFB represents

TTFB includes network connection time plus the time the server spends before sending the first response byte. It is not a pure hosting score, but slow origin processing is a common contributor.

Test cached and uncached behavior

A public cached page and an uncached dynamic page can have very different TTFB. Knowing which case you are measuring prevents the wrong diagnosis.

Reduce origin work

Page caching, adequate CPU, efficient PHP, healthy databases and fewer expensive plugin operations can reduce response delay.

Use a CDN strategically

Edge delivery can reduce network distance and, when HTML is cached at the edge, can also reduce reliance on the origin for repeat public requests.

Do not chase one number

TTFB should be interpreted alongside LCP, cache state and real-user geography. A fast first byte does not guarantee a fast page.