Free website speed test · Instant · No signup

Website Speed Test

Measure how fast your site responds. Domain Doctor checks server response time (TTFB), transfer size, compression and HTTP version, then grades performance.

19 checks per scan Results in seconds Free, no signup

The tool

What the Website Speed Test checks

Speed is trust. A slow server response pushes visitors away and drags down search rankings. The first thing to measure is Time To First Byte, how long your server takes to start responding.

Domain Doctor times your response, measures the transferred size, checks whether gzip/brotli compression and modern HTTP (HTTP/2 or HTTP/3) are enabled, and grades the result, with the biggest wins highlighted.

How it works

Check your domain in three steps

1Enter your domainType any domain into the box above and start the free scan. No signup, no software.

2We inspect it liveDomain Doctor times your server response and measures compression, in real time from our servers.

3Get a clear verdictYou get a plain-language result, the exact records we found, and a concrete fix if anything is wrong.

What to watch for

Common Website Speed Test problems

Slow Time To First Byte (server or database bottleneck)
No gzip/brotli compression on text assets
Still serving over HTTP/1.1 instead of HTTP/2 or HTTP/3
Oversized, uncompressed HTML payload

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Questions

Frequently asked

What is a good TTFB?

Under 200ms is excellent, under 500ms is good. Above about 800ms indicates a server, database or network bottleneck worth investigating.

Does hosting affect speed?

Significantly. Server location, resources, caching and network quality all shape response time. Fast NVMe hosting with a CDN makes a large difference.