🆚 DNS Prefetch vs. OpenID

The rel="dns-prefetch" attribute on HTML <link> elements instructs web browsers to resolve domain names for external resources before those resources are requested.

It is commonly used for third-party domains serving scripts, fonts, analytics, advertisements, or media files, helping reduce DNS lookup latency and improve loading performance for external connections.

OpenID is a decentralized authentication protocol based on OAuth 2.0 that enables applications to verify a user's identity through an external identity provider instead of managing credentials directly.

It adds an identity layer on top of OAuth by issuing ID tokens that confirm who the user is, supports single sign-on across multiple services, and allows retrieval of basic profile information.

Popularity

Determined by the number of sites using each technology.

• 🥇 Most popular in Japan in the Performance Optimization category.
• 🥇 Most popular in Italy in the Performance Optimization category.
• 🥇 Most popular in Australia in the Performance Optimization category.
• 🥇 Most popular in Canada in the Performance Optimization category.
• 🥇 Most popular in Turkey in the Performance Optimization category.

• 🔥 15th most popular in Uruguay in the Standards category.
• 🔥 16th most popular in Indonesia in the Standards category.
• 🔥 16th most popular in Thailand in the Standards category.
• 🔥 16th most popular in Korea in the Standards category.
• 🔥 16th most popular in the United Arab Emirates in the Standards category.

Top sites

Top-ranked sites that use these technologies.

Compare alternatives

Technologies with similar characteristics.

• DNS Prefetch vs. Preconnect
• DNS Prefetch vs. Speculation Rules
• DNS Prefetch vs. Preload
• DNS Prefetch vs. Prefetch
• DNS Prefetch vs. Instant.Page

• OpenID vs. OAuth
• OpenID vs. GraphQL
• OpenID vs. RelMeAuth
• OpenID vs. OpenAPI
• OpenID vs. IndieAuth

• DNS Prefetch technology profile
• W3C company profile

• OpenID technology profile