Diff Checker

The Diff Checker Tool is a lightweight, web-based utility designed to compare two blocks of text and highlight their differences. It provides an intuitive interface for users to paste texts, compare them, and view the changes in a clear, colour-coded format. The tool compares multiline texts, programming code, HTML, or other textual content. All processing is done client-side, right on the browser.

Diff Checker Tool Features:

• Both Text and Code Difference Detection
  • Automatically detects if a code snippet is provided and shows the code comparison result syntax highlighted.
  • Smart whitespace handling with configurable sensitivity.
• Multiline Support
  • Handles multi-line inputs seamlessly, which makes it suitable for code, HTML, or large documents.
• Word-level difference support
  • The tool will analyze and show word-level differences for every line change.
• Color-Coded Differences
  • The result section will highlight added lines in green.
  • The result section will highlight removed lines in red.
  • Unchanged lines are displayed as-is.
• Whitespace Handling
  • Option to ignore or consider whitespace differences
  • The default setting ignores whitespace for code comparison convenience
  • Toggle available for exact whitespace matching when needed
• Difference Navigation
  • Use the “Prev” and “Next” buttons above the results to jump between highlighted differences. A counter shows the current difference number and the total count.
• Cross-Browser Compatibility
  • Works in all modern browsers without requiring additional plugins or configurations.
• Sophisticated Diff Algorithm
  • Uses the Myers difference algorithm-based javascript library for change detection.

Usage Example

Step-by-Step Guide

1. Input Texts
   • Paste the first text block into the left text-area labelled “Paste your first text here…”
   • Paste the second text block into the correct text-area labelled “Paste your second text here…”
2. “Ignore whitespace” Configuration:
   • Checked (default): Ignores differences in spaces, tabs, and line endings
   • Unchecked: Shows all whitespace differences
3. Compare Texts
   • Click the “Compare” button to analyze the differences between the two texts.
4. View Results
   • The differences will be displayed below the button in a styled output area.
   • Added lines will appear in green, removed in red, and unchanged lines will remain unstyled.

Example:

Text 1:

function greet(name) {
  console.log("Hello, " + name);
}Code language: JavaScript (javascript)

Text 2:

function greet(name) {
  console.log("Hi, " + name);
}Code language: JavaScript (javascript)

Example diff checker result output:

Limitations:

1. Performance with Large Inputs
   • While the tool efficiently handles moderate-sized texts, extremely large inputs may impact performance due to the lack of optimization for large datasets.

Privacy & Security

• 🔒 100% Client-Side Processing: All text comparisons are performed 100% locally in your browser
• 🚫 No Data Storage: Your text content is never saved or transmitted to any server
• 💻 Offline Capability: Works without an internet connection once loaded
• 🔐 Data Privacy: No cookies, tracking, or data collection of any kind

Feedback

Please message us for any bug reports/feature requests and/or feedback.