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dns-prefetch

dns-prefetch is a resource hint (``) that instructs the browser to perform only the DNS lookup for a specific domain in the background. This is a lightweight way to resolve a domain name to an IP address ahead of time, which can save a small amount of latency on the initial connection when a resource from that domain is eventually requested.

Fabian Krumbholz
April 8, 2026
1 min read
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