Text & Code Tools

Diff Checker

Compare two texts and see the differences line by line. Find added, removed, and unchanged lines instantly.

How to Use Diff Checker

  1. 1
    Paste Your Texts

    Enter the original text in the left box and the modified version in the right box. You can compare code, documents, or any text content.

  2. 2
    Configure Options

    Use "Ignore whitespace" to skip indentation differences or "Ignore case" for case-insensitive comparison.

  3. 3
    Review Differences

    See the color-coded diff result below. Green lines are additions, red lines are deletions, and white lines are unchanged.

Why Use YaliKit's Diff Checker?

Line-by-Line Comparison

See exactly which lines were added, removed, or remain unchanged with accurate line numbers for both versions.

Flexible Options

Ignore whitespace or case differences based on your needs. Perfect for comparing code with different formatting.

Color Coded Results

Green for additions, red for deletions, with clear visual indicators. Understand changes at a glance.

100% Private

All processing happens in your browser. Your text data never leaves your device or gets stored anywhere.

Frequently Asked Questions

How does the diff checker compare texts?
Our diff checker uses the Longest Common Subsequence (LCS) algorithm to compare texts line by line. It identifies which lines were added, removed, or remain unchanged between the two versions, providing accurate results even for large files.
Can I compare code files with this tool?
Yes, the diff checker is perfect for comparing code. It preserves formatting and shows syntax-aware differences. Use the 'Ignore whitespace' option when comparing code with different indentation styles.
Is my text data stored or sent to a server?
No, all comparison happens directly in your browser using JavaScript. Your text never leaves your device, ensuring complete privacy. When you close the page, all data is gone.

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