Diff Checker
Paste two versions of text to instantly see what changed. Line-level and word-level diff modes with colored highlights for additions and deletions. Copy the diff output with one click.
How to Use the Diff Checker
Paste the original text in the left panel and the modified text in the right panel. The tool instantly computes the differences between them. Added text is highlighted in green and removed text in red.
Switch between Line Diff (compares line by line, best for code) and Word Diff (compares word by word, best for prose). The stats counter shows total additions and deletions.
What Is a Diff?
A diff (short for difference) compares two pieces of text and identifies what was added, removed, or changed between them. Diff tools are essential in software development for code reviews, debugging, and version control. They are also useful for comparing documents, configuration files, and any two text blocks.
Privacy
All text comparison is performed locally in your browser. Your data is never sent to any server or stored anywhere.