Diff Checker
Compare two text or code snippets with highlighted differences.
function calculateTotal(items, discountRate) {let subtotal = 0;
for (let i = 0; i < items.length; i++) {subtotal += items[i].price;
}
const tax = subtotal * 0.08;
return (subtotal - (subtotal * discountRate)) + tax;
function calculateTotal(items: CartItem[], discountRate: number = 0): number {const subtotal = items.reduce((acc, item) => acc + item.price, 0);
const discount = subtotal * Math.min(Math.max(discountRate, 0), 1);
const tax = (subtotal - discount) * 0.0825;
return Number((subtotal - discount + tax).toFixed(2));
}
Technical Specification & Client Security
Compare two text or code snippets with highlighted differences. All formatting, transformations, and diffing algorithms run directly in your browser using local Web Workers and client RAM. No source code, authentication tokens, or database queries are sent across the network.
Frequently Asked Questions
Is my proprietary code uploaded when using this diff tool?
No. All diff calculations run locally in your browser using client-side JavaScript. Your code is never transmitted to any external server or saved in any database.
Can I compare large files or minified code?
Yes. The diff algorithm parses thousands of lines efficiently without UI blocking. You can toggle unified and split views to inspect line additions and deletions comfortably.
Does this support syntax highlighting across multiple programming languages?
The tool compares arbitrary text, Markdown, JSON, and source code in all programming languages with green addition (+) and red deletion (-) markers.