AI Code Explainer
Paste any code and get a plain English explanation for each line. Supports JavaScript, Python, HTML, and CSS.
Detected language: python
import React, { useState, useEffect } from 'react';→ Imports a module so its functions and classes can be used.
 // Custom hook for fetching data→ General code statement.
function useFetch(url) {→ General code statement.
const [data, setData] = useState(null);→ General code statement.
const [loading, setLoading] = useState(true);→ General code statement.
 useEffect(() => {→ General code statement.
fetch(url)→ General code statement.
.then(response => response.json())→ General code statement.
.then(json => {→ General code statement.
setData(json);→ General code statement.
setLoading(false);→ General code statement.
})→ General code statement.
.catch(error => {→ General code statement.
console.error('Fetch failed:', error);→ General code statement.
setLoading(false);→ General code statement.
});→ General code statement.
}, [url]);→ General code statement.
 return { data, loading };→ Returns a value from the function.
}→ Closes the code block above.
 export default useFetch;→ General code statement.
How Does the Code Explainer Work?
Our code explainer uses pattern recognition to identify common programming constructs and explain them in plain English. It's designed for learning, code reviews, and understanding unfamiliar codebases.
🎯 Best Use Cases
- Learning: Understand unfamiliar code line by line
- Code Reviews: Quickly grasp what a function does
- Legacy Code: Make sense of old, undocumented code
- Onboarding: Help new team members understand the codebase
- Teaching: Use explanations in tutorials and documentation
FAQ
What languages are supported?
JavaScript (including React/Node.js), Python, HTML, and CSS. The auto-detect feature identifies the language from your code.
Is my code sent to a server?
No. All analysis happens 100% in your browser using pattern matching. Your code never leaves your machine.