Text Diff and Compare Tool

Compare two blocks of text side by side and highlight the differences. Find additions, deletions, and changes instantly.

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1. Paste or type the original text into the left text area. 2. Paste or type the modified text into the right text area. 3. View the color-coded differences that appear automatically - green for additions, red for deletions, and yellow for changes. 4. Toggle between side-by-side and unified diff view using the view mode buttons. 5. Review inline character-level highlights within modified lines to spot exact changes.

About This Tool

The Text Diff and Compare Tool lets you paste two blocks of text and instantly see every difference highlighted in a clear, side-by-side view. Added lines, removed lines, and modified sections are color-coded so you can spot changes at a glance - ideal for reviewing document revisions, comparing code snippets, or verifying data consistency.

This tool performs a line-by-line comparison and highlights insertions, deletions, and modifications using an intuitive color scheme. Green indicates added content, red shows removed content, and yellow marks lines that have been changed. You can toggle between a side-by-side view and a unified diff view depending on your preference.

Whether you are a developer comparing configuration files, a writer reviewing edits to a manuscript, or a student checking differences between draft versions, this tool makes the comparison process fast and visual. Everything runs in your browser - no text is uploaded or stored anywhere.

Frequently Asked Questions

The tool uses a diff algorithm to compare the two texts line by line. It identifies which lines have been added, removed, or changed, then highlights these differences with color coding for easy visual review.
Yes. The tool works with any plain text including source code, configuration files, JSON, XML, and more. It preserves whitespace and indentation, making it suitable for code comparison.
The tool can handle large text blocks, though extremely large files (over 100,000 lines) may cause slower performance since everything is processed in your browser. For typical use cases, it handles text of any reasonable size instantly.
Side-by-side view shows the original text on the left and the modified text on the right with differences highlighted in each column. Unified view shows both versions in a single column with additions and deletions marked inline, similar to a Git diff output.
Yes. When a line has been modified rather than fully replaced, the tool highlights the specific characters or words within that line that have changed, making it easy to spot small edits.

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