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.
VASTROX HOSTING · EMAIL · DNS · SSL
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What this 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.
Common Website Speed Test errors
- 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
VASTROX NVMe HOSTING
Make your site genuinely fast
Move to VASTROX NVMe hosting with a global CDN, caching and HTTP/3 — lower TTFB and happier visitors.
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- Built-in caching and CDN
- HTTP/2 & HTTP/3 with compression
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Frequently asked questions
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.