Code Diff Checker

Compare two blocks of code or text side-by-side or line-by-line to instantly spot additions, deletions, and modifications.

Original Text (A) 0 lines

function calculateTotal(items) {
    let total = 0;
    for (let i = 0; i < items.length; i++) {
        total += items[i].price;
    }
    return total;
}

Modified Text (B) 0 lines

function calculateTotal(items, discount = 0) {
    let total = 0;
    for (const item of items) {
        total += item.price;
    }
    return total * (1 - discount);
}

Diff Comparison Result

0 additions 0 deletions

Diff Guidelines

Additions: Lines highlighted in green with a `+` prefix indicate content present in the modified text but missing from the original.
Deletions: Lines highlighted in red with a `-` prefix indicate content present in the original text but removed from the modified version.
Line-by-Line Analysis: The comparison algorithm processes input line-by-line using standard Myers diff heuristics to highlight exact code updates.

What is Code Diff Checker?

Code Diff Checker is a browser-based utility for web development and browser metadata work. It helps you transform, inspect, generate, or evaluate the relevant input without installing a separate desktop tool.

How to use this tool

Enter or paste the required input, select the available options, then review the generated result before copying or applying it in your project. Check the output in its real target environment when accuracy matters.

Frequently Asked Questions (FAQ)

Yes. This tool is designed to process the values you enter in your browser.

Review the output for the target syntax and test it in the application, browser, API, or workflow where it will be used.