Auth.js / NextAuth Website Examples
Auth.js (formerly NextAuth.js) is an open-source authentication library built primarily for Next.js and other JavaScript frameworks, letting developers add login (OAuth providers, email, credentials) without a paid third-party identity platform. Our engine detects it through 2 HTML patterns tied to its default sign-in page markup and session-cookie conventions, since as a self-hosted library it doesn't load from an external CDN the way hosted identity platforms do. A detection indicates the site handles its own auth backend using this library rather than outsourcing it. Documented at authjs.dev.
Check If Any Site Uses Auth.js / NextAuth
Paste any URL to instantly detect whether it was built with Auth.js / NextAuth. Our engine checks 2 technical signals.
What Types of Websites Use Auth.js / NextAuth?
Auth.js / NextAuth is used across many industries. These are the most common website types built on this platform:
Who Builds with Auth.js / NextAuth?
Businesses of all sizes
Fast, reliable site building with professional results
Designers and developers
Powerful tools with minimal setup
Startups
Quick launch with scalable infrastructure
Content creators
Beautiful presentation for your work
How to Identify Auth.js / NextAuth Websites
Every Auth.js / NextAuth website leaves distinctive technical fingerprints. Here's what to look for:
HTML Attributes
2 HTML patterns in the page source
Auth.js / NextAuth vs Alternatives
Explore how Auth.js / NextAuth compares to similar auth provider tools:
Build with Auth.js / NextAuth
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Get Started with Auth.js / NextAuth →Detection Coverage
- Total signals
- 2 patterns
- Category
- Auth Provider
- Accuracy
- High