Our Mission
Everyone deserves a fast internet experience. DNS speed is one of the few performance bottlenecks that regular users can fix themselves, instantly and at no cost. We built this tool to make that process as simple as possible. Run a test, see which resolver is fastest, change two numbers in your settings, and your browsing feels snappier. No technical knowledge required.
Why DNS Speed Matters
Every time you visit a website, your device first needs to look up the IP address using DNS. That lookup typically takes 5 to 100 milliseconds, but not all DNS resolvers are created equal. A fast resolver completes the process in under 15 milliseconds. A slow one can take 50 or more. Multiply that difference across the dozens of domains a modern webpage pulls from — scripts, fonts, images, analytics — and a slow resolver can add a full second or more to your page load time.
Instant Testing
Test 17+ DNS servers in seconds with real-time results
Global Coverage
Servers from Cloudflare, Google, Quad9, and more
Privacy Focused
No data collected, everything stays in your browser
Works Everywhere
Desktop, tablet, and mobile — no installation needed
How It Works
Our tool uses DNS-over-HTTPS (DoH) to test DNS servers directly from your browser. This modern protocol encrypts DNS queries, providing both speed and privacy. We measure response times using the browser's high-resolution performance.now() API, which provides microsecond precision. All tests run simultaneously for instant results.
Our Technology
Built with
Open Source
DNS Speed Test Online is built with transparency in mind. Our code is clean, follows modern web standards, and runs entirely in the browser. There is no server-side code, no databases, and no user tracking. We believe in building tools that respect user privacy and work without unnecessary dependencies.
Contact
Have questions, suggestions, or want to collaborate? Visit our Contact page or reach out at hello@dnsspeedtestonline.pages.dev.