Side-by-Side Diff Viewer — GitHub Style Comparison

Compare two versions of text or code side-by-side. Identify changes, track edits, and visualize added or removed lines just like GitHub.

Original Content
Original Content
Updated Content
1const a = 21;
2console.log(a);
1const a = 12;
2console.log(a);
Diff Statistics
1Added Lines
1Removed Lines
1Unchanged Lines

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Compare Code or Text Side-by-Side

ToolMateX’s Side-by-Side Diff Viewer lets you compare two blocks of text or source code in a visually clean layout inspired by GitHub. It highlights:

  • 🔴 Removed lines (left column)
  • 🟢 Added lines (right column)
  • 🟡 Word-level inline highlights for changed lines
  • 🔢 Matching line numbers to stay aligned
  • 🧠 Fully browser-based — fast and private

Perfect for Developers and Writers

This tool is ideal for:

  • 🧑‍💻 Code review workflows
  • 📝 Proofreading content revisions
  • 📚 Markdown or HTML content comparison
  • 🛠 Debugging outputs or logs

How It Works

  1. Paste original and modified content
  2. See line-by-line comparison instantly
  3. Changed lines show word-level differences
  4. All lines, including unchanged ones, are retained for context

Why Choose ToolMateX's Diff Viewer?

  • ✅ GitHub-style layout with real-time updates
  • ✅ Word-level inline changes
  • ✅ No login or upload required
  • ✅ Ideal for any file format: JS, Python, HTML, Markdown, JSON, etc.

Example Use Cases

  • Compare configuration files (e.g., JSON, YAML)
  • Check what changed in code during a bug fix
  • Preview blog post revisions before publishing
  • Compare CSVs, notes, or logs quickly

Frequently Asked Questions (FAQs)

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Tired of bloated tool websites with 10 ads per click? This platform is built for speed, simplicity, and reliability. Whether you're debugging JSON or testing colors, we’ve got your back.

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Works Offline (Most of Them)
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Made by a 1-Person Team
Made by a 1-Person Team

Made by someone who actually uses these tools daily. It’s fast, clean, and made with your workflow in mind, not corporate KPIs.

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