JavaScript Code Humanizer — Clean Up AI JavaScript Code to Match Your Style (Free)
AI-generated JavaScript works, but it rarely matches the codebase it lands in. Here is how to clean it up so it reads like the rest of your project — and a free tool that does it in seconds.
What gives AI-generated JavaScript away
Comments that restate the code — # Loop through each item above a for loop adds nothing a reader can't see
"Step 1:", "Step 2:" scaffolding — useful while the model was reasoning, noise once the code is in your repo
Naming that ignores your project — camelCase locals in a snake_case Python codebase, or the other way round in JavaScript
Needless temporaries — result = a + b followed immediately by return result
Docstrings that repeat the function name — """Calculate the total.""" on calculate_total()
Before and after
This is a typical AI draft and the real output of Code Humanizer's Idiomatic preset at 100%. Same logic, less noise.
AI draft
// Function to calculate the total price of items in the cart
function calculateCartTotal(cartItems, taxRate) {
// Step 1: Initialize the running total
let running_total = 0;
// Step 2: Loop through each item in the cart
for (const cart_item of cartItems) {
running_total += cart_item.price * cart_item.quantity; // add item price times quantity
}
// Step 3: Calculate the tax and the final total
const tax_amount = running_total * taxRate;
const final_total = running_total + tax_amount;
return final_total;
}
After Code Humanizer (Idiomatic, 100%)
function calculateCartTotal(cartItems, taxRate) {
let runningTotal = 0;
for (const cartItem of cartItems) {
runningTotal += cartItem.price * cartItem.quantity;
}
const taxAmount = runningTotal * taxRate;
return runningTotal + taxAmount;
}
The convention it applies for JavaScript: camelCase for variables and functions.
JavaScript-specific clean-ups
camelCase for variables; snake_case usually means the model was thinking in Python
Be careful renaming anything used as an object key or shorthand property — it changes your API. Code Humanizer skips those automatically.
Remove // Step N comments and comments that repeat a function's name
Let Prettier and ESLint handle formatting and lint rules afterwards
Try the free JavaScript code humanizer
Paste your JavaScript code, pick a style preset and copy the result. 3 free tries, no account needed.
No. Code Humanizer only changes comments, whitespace, local variable names and redundant temporaries. Renames are applied consistently and skip strings, attribute access, keyword arguments and object keys. As with any change, run your tests.
A note on coursework
Code Humanizer is a readability and style tool. It isn't designed to hide who wrote code, and using it to break a course's academic integrity rules is against our Terms of Service. If your course allows AI assistance, comparing an AI draft with a cleaned-up version is a good way to learn idiomatic style.