TTFB: The Metric Nobody Talks About Enough

When people talk about site speed, they usually mean images, caching, and plugins. But there''s a metric that happens before any of that — TTFB, or Time to First Byte. It''s the time between a visitor requesting a page and their browser receiving the first byte of the response. If TTFB is poor, your site feels slow no matter what else you optimize, because nothing can even start loading until the server responds.

What''s actually inside TTFB

TTFB isn''t one thing but the sum of three phases: DNS lookup and connection setup (including the TLS handshake), the time your server spends generating the page, and the response traveling back to the visitor. On a WordPress site, the middle phase usually dominates — PHP has to execute, the database has to answer queries, your theme and plugins have to run. On an overloaded shared host with slow disks, that can easily take over a second.

What counts as a good TTFB

• Under 200 ms — excellent. Google''s own documentation recommends this threshold.
• 200–500 ms — solid, with room for improvement.
• 500–1000 ms — noticeably slow; visitors feel it.
• Over 1 second — a real problem, usually bad hosting or missing caching.

How to measure it

Quickest way: open Chrome DevTools (F12), go to the Network tab, refresh the page, and click the first request — under "Timing" you''ll see "Waiting (TTFB)". For multi-location testing, use WebPageTest or KeyCDN''s Performance Test. Measure from where your audience actually is: a site hosted in Germany will show a different TTFB from Belgrade than from Frankfurt.

How to fix a bad TTFB

First — caching. When a page is served from cache, PHP and the database never run, so TTFB drops to tens of milliseconds. Second — fast hosting: NVMe drives instead of spinning disks, a current PHP version, and a server that isn''t crammed with accounts can shave off hundreds of milliseconds. Third — a CDN, which caches content closer to your visitors and shortens the network path. Our hosting plans include NVMe storage and a free global CDN for exactly this reason.

TTFB and SEO

Google doesn''t rank sites by TTFB directly, but TTFB feeds into LCP (Largest Contentful Paint), which is a ranking factor through Core Web Vitals. Put simply: a page cannot have a good LCP if the server loses half a second at the start. If SEO matters to you, SEO-optimized hosting with a low TTFB is the foundation everything else is built on.

Measure your TTFB today — it takes five minutes and often reveals a problem no optimization plugin can solve.