Diff Checker

Compare two text blocks to visualize changes. Great for code reviews, version history, or debugging JSON responses.

Samples:

Original Text

Modified Text

Loading Tool…

Online Text & JSON Diff Checker

Compare two blocks of text, code, or JSON side-by-side to find the differences. Our Diff Checker highlights added, removed, and modified lines with clear color coding. Whether you are debugging code, checking version history, or comparing configuration files, this tool saves you time by spotting changes instantly. It runs entirely in your browser, ensuring your private data stays private.

How it Works

1Paste the original text (Left) and the modified text (Right).
2The tool automatically highlights differences.
3Green lines indicate additions; red lines indicate deletions.
4Click 'Swap' to reverse the comparison direction.
5Use 'Clear' to start over with new content.

Key Features

Character-level and line-level diffing.

Side-by-side comparison view.

Specific JSON mode for structured data comparison.

Syntax highlighting for code snippets.

Privacy-focused: Client-side processing only.

Common Use Cases

Code Review: Compare snippets before committing to Git.Content Editing: See changes between two drafts of an article.Config Debugging: Compare 'staged' vs 'production' config files.Data Verification: Check if two JSON responses are identical.Plagiarism Check: Quickly spot differences between source and copy.

Frequently Asked Questions

Everything you need to know about using this tool effectively and securely.

Q.Does it ignore whitespace?

Currently, our standard mode highlights all differences, including whitespace, to ensure exact precision for code and data comparisons.

Related Tools

Enhance your workflow by combining these tools together

JSON Formatter🤝 paired

Format before comparing

Sort & Dedupe🔥 popular

Normalize text for diff