How does Themerella detect Next.js?
Themerella reads public evidence such as __next_data__ json script in the html, then reports the match with a confidence level.
Technology
Next.js detection
Category: Frontend Framework. Themerella detects this technology from public website evidence and shows confidence in the report.
Definition
What is Next.js?
Next.js is a React-based framework that adds server-side rendering, static generation, routing, and build tooling for production React applications.
Detection evidence
How Themerella detects Next.js
- __NEXT_DATA__ JSON script in the HTML
- /_next/static/ asset paths for chunks and CSS
- x-powered-by: Next.js or Next.js-specific response headers
Report value
Every detected technology should include category, confidence, evidence, and practical risk/context so the result is useful beyond logo recognition.
False-positive boundary
What to verify before acting on Next.js evidence
- Fully static Next.js exports can omit some runtime markers.
- A reverse proxy or custom CDN can hide Next.js response headers.
Next workflow
- Run the Next.js detector to confirm __NEXT_DATA__ and asset evidence.
- Check whether the host is Vercel and how caching is configured.
- Review server-rendered SEO metadata and JavaScript payload findings.
FAQ
Common questions
Can Next.js detection be a false positive?
Yes. Fully static Next.js exports can omit some runtime markers. Themerella reports detection as public evidence with a confidence level, not a guaranteed inventory.
What category does Next.js fall under?
Next.js is detected as a Frontend Framework technology and grouped with related signals in the Themerella report.
Is the Next.js detector free?
Yes. Enter any public website URL, run the scan, and review the technology evidence and confidence before any paid monitoring or API layer.
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