📌 Overview

Compare two versions of text and instantly spot the differences line by line. Perfect for tracking edits, code changes, and document revisions without installing anything.

🔍 Text Diff Checker

Compare two versions of text and instantly spot the differences line by line. Perfect for tracking edits, code changes, and document revisions without installing anything.

Original Text

Changed Text

Paste two versions and click Compare.

🔒 All processing happens in your browser. No data is uploaded to any server.

📋 How to Use

Paste the original text in the left box.
Paste the new version in the right box.
Click "Compare" to see changed lines highlighted.
Review additions (green) and removals (red).

❓ FAQ

Is this a character-level or line-level diff?

It compares line by line. Lines present only in the first text are marked removed, only in the second are added, and lines in both but different are flagged as changed.

Can I compare code snippets?

Yes. It works great for short code or config snippets, though for very large files a dedicated merge tool may be more efficient.

Is my text stored?

No. Comparison runs entirely in your browser.

❓ More Questions

Is the diff line-level or character-level?

It compares line by line. Lines only in the original are marked removed, only in the new text added, and lines on both sides with different content are flagged as changed.

Can I compare code?

Yes - it works well for checking changes in short code or config snippets.

💡 Use Cases

📄

Doc Revisions

See exactly what changed between draft versions.

💻

Code Review

Spot differences in small code or config edits.

✍️

Writing

Compare two paragraphs before choosing one.

🔗 Related Tools

📖 Deep Dive: Text Diff Checker

Why compare texts

In writing, collaboration, and development we often need to confirm what changed. Line-by-line comparison clearly shows additions, deletions, and modifications - far more reliable than eyeballing it.

How it works

The tool splits both texts into line arrays, uses set operations to find lines only on the left (deleted) or only on the right (added), and flags lines present on both sides whose content differs.

A quick example

Put the old copy on the left and the new version on the right. After clicking compare, newly added selling points show in green and removed outdated phrases in red - you can review the whole thing at a glance.