TTFB Checker (Time to First Byte) - Rocketeers app

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 Tool TTFB checker  

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 Free tool TTFB checker
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 Enter a URL to measure its **time to first byte** — with a full breakdown of DNS, TCP, TLS, server processing and download time.

 URL to measure Measure Measuring…

Try:  

Time to first byte

Status  Total  Size  Protocol 

Timing breakdown
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 Followed  redirect(s) to  ·

 Connected to

What is time to first byte?
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**Time to first byte (TTFB)** measures how long it takes from the moment a request starts until the first byte of the response arrives. It captures everything that happens before the browser can begin rendering: DNS resolution, the TCP connection, the TLS handshake, and the time the server spends generating the response.

 A fast TTFB — generally under **200 ms** — is a strong signal of a healthy server and a snappy site. A slow one points to DNS, network or back-end bottlenecks. This tool measures from our server, so results reflect raw server performance rather than your own connection.