How does Themerella detect React?
Themerella reads public evidence such as data-reactroot or data-reactid attributes in rendered html, then reports the match with a confidence level.
Technology
React detection
Category: Frontend Framework. Themerella detects this technology from public website evidence and shows confidence in the report.
Definition
What is React?
React is an open-source JavaScript library for building component-based user interfaces, commonly used as the rendering layer for single-page apps and modern frameworks.
Detection evidence
How Themerella detects React
- data-reactroot or data-reactid attributes in rendered HTML
- react and react-dom script resource names
- React DevTools global hooks or hydration markers when rendered scanning is enabled
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 React evidence
- Server-rendered React can strip obvious data-react attributes from the final HTML.
- Meta-frameworks like Next.js or Remix use React internally, so React alone does not identify the full stack.
Next workflow
- Confirm React with script and runtime evidence.
- Check whether a meta-framework such as Next.js or Remix is also present.
- Review JavaScript payload and hydration cost in the performance findings.
FAQ
Common questions
Can React detection be a false positive?
Yes. Server-rendered React can strip obvious data-react attributes from the final HTML. Themerella reports detection as public evidence with a confidence level, not a guaranteed inventory.
What category does React fall under?
React is detected as a Frontend Framework technology and grouped with related signals in the Themerella report.
Is the React 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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