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Blog Post Title: Introducing the Enhanced Code Diff Tool: Compare Code with Ease Posted on September 1, 2025 Are you a developer looking for a powerful, user-friendly tool to compare code changes? Look no further! I'm excited to share my Enhanced Code Diff Tool, a web-based utility designed to make code comparison intuitive, visually appealing, and feature-rich. Whether you're debugging, reviewing code changes, or collaborating with a team, this tool has you covered. In this post, I'll walk you through its features, explain how to use it, and provide the complete source code so you can try it yourself. What is the Enhanced Code Diff Tool? The Enhanced Code Diff Tool is a web application that allows you to compare two pieces of code side by side or in a unified view. It highlights differences with green for additions and red for deletions, supports multiple programming languages, and offers advanced features like syntax highlighting, file uploads, and export options. Whether you're comparing JavaScript, Python, HTML, CSS, JSON, or plain text, this tool provides a professional-grade experience. Features of the Tool Side-by-Side and Unified Views: Switch between a split view for comparing code side by side or a unified diff view for a compact representation. Syntax Highlighting: Automatically detects languages or allows manual selection for accurate syntax highlighting. Customizable Comparison: Choose between character, word, or line-level comparison, with an option to ignore whitespace. Dark Theme Support: Toggle between light and dark themes for comfortable viewing. Line Numbers: Display line numbers for easier reference, with the option to toggle them on or off. File Upload: Upload code files directly into the tool. Clear Buttons: Easily clear the input areas for quick resets. Navigation: Jump between differences with "Previous" and "Next" buttons. Export Options: Save your comparison as HTML, PDF, or copy it to the clipboard. Shareable Links: Generate links to share your comparison with others. Statistics: View metrics like characters added, removed, lines changed, and total differences. How to Use the Enhanced Code Diff Tool Using the tool is straightforward: Input Code: Paste your original code in the "Original Code" textarea or upload a file using the "Upload File" button. Paste your modified code in the "Modified Code" textarea or upload a file. Use the "Clear" button next to each input area to reset the content if needed. Configure Settings: Select a language (e.g., JavaScript, Python, HTML) or use "Auto Detect" for automatic language recognition. Choose a comparison mode (Character, Word, or Line Level). Toggle "Ignore Whitespace" to exclude spacing differences. Enable or disable "Dark Theme" and "Show Line Numbers" as preferred. Compare Code: Click the "Compare & Highlight" button (🔍) or press Ctrl+Enter to analyze differences. Additions are highlighted in green, and deletions in red. Navigate Differences: Use the "Previous" (⬆️) and "Next" (⬇️) buttons or Ctrl+P and Ctrl+N to jump between differences. The status bar shows the current difference and total count. Export or Share: Click "Export as HTML" (💾) or "Export as PDF" (📄) to save your comparison. Use "Copy Diff" (📋) to copy the unified diff to your clipboard. Click "Share Link" (🔗) to generate a shareable URL with your code. Button Functions Here’s a breakdown of each button and control in the tool: Language Select: Choose a programming language for syntax highlighting or select "Auto Detect" to let the tool identify the language based on code patterns. Comparison Mode: Select the granularity of comparison (Character, Word, or Line Level) to control how differences are detected. Dark Theme Toggle: Switch between light and dark themes for better readability. Ignore Whitespace Toggle: Enable to ignore spacing differences during comparison. Show Line Numbers Toggle: Show or hide line numbers in the code panels. Upload File (📁): Upload a file to populate the "Original Code" or "Modified Code" textarea (supports .txt, .js, .py, .html, .css, .json, .md files). Clear (🗑️): Clear the content of the respective textarea ("Original Code" or "Modified Code") and reset the line count. Compare & Highlight (🔍): Run the comparison to highlight differences (also triggered automatically on input changes). Previous (⬆️): Navigate to the previous difference in the code. Next (⬇️): Navigate to the next difference in the code. Toggle View (📋): Switch between side-by-side and unified diff views. Export as HTML (💾): Download the comparison as an HTML file with highlighted differences. Export as PDF (📄): Save the comparison as a PDF document (includes statistics and a simplified view). Copy Diff (📋): Copy the unified diff output to the clipboard in a standard diff format. Share Link (🔖): Generate a shareable URL containing the encoded original and modified code. Try It Yourself Below is the complete source code for the Enhanced Code Diff Tool. You can copy this code, save it as an HTML file (e.g., code-diff-tool.html), and open it in a web browser to use the tool locally. Alternatively, host it on a web server to share it with others.