GitHub-style Diff Checker
Compare two texts line-by-line with word-level highlighting. Side-by-side, readable and developer friendly.
What is a Diff Checker?
A Diff Checker is a tool that compares two pieces of text and highlights the differences between them. It shows added words, removed content, and modified lines. Developers use a diff checker to compare source code, configuration files, documents, and API responses.
How Does This Online Diff Checker Work?
This free online Diff Checker compares text line-by-line and then performs word-level comparison to highlight precise changes. Removed content is marked in red, and added content is highlighted in green, similar to GitHub or VS Code diff view.
Why Use a Diff Checker Tool?
- Compare two versions of source code
- Detect changes in documents
- Review pull request modifications
- Debug configuration differences
- Track API response changes
Is This Diff Checker Secure?
Yes. This online Diff Checker runs entirely in your browser. No text is uploaded to any server. Your data remains private and secure.
Frequently Asked Questions
How do I compare two texts online?
Paste the original text into the left box and the modified text into the right box. Click the Compare button to see highlighted differences instantly.
What is the difference between line diff and word diff?
Line diff compares entire lines and highlights changed lines, while word diff identifies specific words that were added or removed within a line. This tool supports word-level diff for more precise comparison.
Can I compare code using this Diff Checker?
Yes. You can compare JavaScript, Python, Java, HTML, or any programming language code. The tool works for plain text, source code, and structured data.
Is this Diff Checker free?
Yes. This is a completely free online Diff Checker tool with no registration required.