Difference Checker

Compare two texts line by line to find differences.

Text A

Text B

Differences

🔍 Difference Checker – Compare Text Files & Spot Changes Instantly

Welcome to NotepadHub’s Difference Checker — a free online tool that helps you easily compare two blocks of text side-by-side and highlight what’s different. Whether you're reviewing revisions, debugging scripts, or proofreading documents, this tool lets you instantly spot even the smallest changes. ⚡

📌 Why Use a Text Comparison Tool?

Comparing two versions of a document, dataset, or code snippet manually can be time-consuming and error-prone. Our tool automates this process, highlighting insertions, deletions, and updates between two text inputs. It’s perfect for developers, writers, students, and editors who need to ensure accuracy and consistency.

⚙️ Features You’ll Love

  • 🆚 Compare two blocks of plain text or code
  • 🔦 Highlights additions, deletions, and changes
  • 💻 Works with large documents and multiline inputs
  • 🌗 Dark and light mode for comfortable reading
  • 📱 Fully mobile-friendly and responsive
  • 🔐 100% private – all data stays in your browser

💡 Use Cases

  • 🧑‍💻 Developers comparing different versions of HTML, CSS, or JS code
  • ✍️ Writers reviewing edits and rewrites
  • 📄 Editors spotting grammar or typo corrections
  • 📊 Analysts verifying file differences in exported reports
  • 🎓 Students checking changes in assignments or documentation

🧪 How to Use

  1. Paste your original content into the left box
  2. Paste the updated or alternate content into the right box
  3. Click the “Compare” button
  4. View the differences visually highlighted below

🔗 Want to Edit Before Comparing?

Clean and format your text first using our popular Text Tools to ensure a fair and useful comparison:

🔐 Is It Secure?

Yes. All text stays in your browser — nothing is uploaded, stored, or tracked. You can compare confidential files, client work, or personal notes with full confidence in your privacy.

🌍 Accessible from Any Device

Compare text differences on the go. Whether you’re on a phone, tablet, or desktop, this tool adapts perfectly. It’s lightweight, fast, and works in all modern browsers.

💡 Power Tip

Want advanced multi-file comparison or folder-based editing? Use our Modern Notepad App — it supports advanced editing, multiple tabs, file renaming, and folder management.

✅ Try It Now

Paste your original and modified text — and instantly visualize what changed. Whether you’re debugging a script or reviewing document drafts, the Difference Checker gives you clarity at a glance.

Brought to you by NotepadHub — the web’s cleanest, fastest collection of free online notepad and text tools. Bookmark this page for your future comparisons!

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