Document Compare Tool

Introduction

Document Compare is a free online text diff tool that quickly compares two documents or text contents and highlights added, removed, and modified parts. Perfect for document proofreading, code comparison, and content review.

Main Features

1. Line-by-Line Comparison

Analyzes differences between two texts line by line, clearly showing changes in each line

2. Color Coding

Uses different colors to highlight added (green), removed (red), and modified (yellow) content

3. Statistics Summary

Shows statistics for added, removed, and modified lines

4. One-Click Copy

Click to copy comparison results to clipboard

How to Use

1. Enter or paste the first document content in the left text box
2. Enter or paste the second document content in the right text box
3. The tool will automatically compare in real-time and highlight differences
4. View the comparison results area below
5. Click "Copy Result" button to copy the complete comparison result

Use Cases

• Document Proofreading: Quickly find differences between two document versions
• Code Comparison: Compare code file changes
• Content Review: Review changes between original and modified copy
• Translation Comparison: Compare source and target text correspondence

FAQ

What do the symbols in the comparison results mean?

• (space): Line is unchanged
• + (plus): Line is added
• - (minus): Line is removed
• ~ (tilde): Line is modified

How long can the text be for comparison?

The tool supports comparison of any length of text. It is recommended to keep single comparisons under 100,000 characters for optimal performance.