Kiểm tra thời gian phản hồi máy chủ (TTFB) miễn phí

It measures your server-side connection timing for a URL: DNS lookup, TCP connect, TLS handshake, request wait, and total Time To First Byte (TTFB), from one Novaverb server in Germany over a fresh HTTP/1.1 connection.

TTFB is the time from starting a request to receiving the first byte of the response. It captures DNS, connection setup, and server processing, reflecting how quickly your backend and network begin answering.

Không có một con số duy nhất phù hợp với mọi website. Công cụ này xếp TTFB đo được của bạn vào các dải theo hướng dẫn công khai của Google trên web.dev ở bách phân vị 75 và hiển thị kết luận ngay bên cạnh giá trị, nên dải sẽ thay đổi khi hướng dẫn thay đổi. Hãy coi kết quả đo tổng hợp là mức nền của máy chủ; người dùng thật còn cộng thêm khoảng cách và thời gian thiết bị.

No. This is one synthetic request from Germany, so it excludes your visitors' distance, devices, networks, and browser behavior. Real-user TTFB varies by location and connection; treat this number as a clean backend baseline.

Common causes are slow database queries, no caching, and distant hosting. Improve it with server-side and full-page caching, a CDN to shorten network distance, faster backend code, and HTTP keep-alive or connection reuse.

No. Core Web Vitals like Largest Contentful Paint and Interaction to Next Paint are browser-rendering and field metrics. This tool measures only server-side connection timing and TTFB, which precede and influence rendering but do not equal it.

Each check opens a fresh connection, so cold DNS caches, certificate negotiation, and server load cause run-to-run variation. Run several checks and compare the trend rather than reading any single measurement as definitive.

TTFB measures when the first response byte arrives from the server. Page load time measures when the browser finishes downloading and rendering everything. A fast TTFB is necessary but not sufficient for a fast-feeling page.

No. This is a single measurement from Germany and does not reflect users in other regions. For worldwide visibility, use a multi-location or field-data tool; this check is best for tracking your backend from a consistent vantage point.

A slow TTFB delays every downstream metric Googlebot and users experience, from crawl efficiency to Core Web Vitals. Faster server responses help pages render sooner, improving perceived speed, which supports rankings and reduces abandonment.