Diff Checker
Compare two texts and highlight the differences line by line. Inline character-level highlighting for modified lines.
What is a Diff Checker?
A diff checker compares two pieces of text and highlights the differences between them. It uses algorithms similar to the Unix `diff` command and Git's diff engine. Developers use diff tools daily for code reviews, tracking configuration changes, comparing API responses, verifying database migrations, and debugging issues by finding exactly what changed between two versions of a file.
How to Use This Diff Checker
Paste or type the original text in the left panel and the modified text in the right panel.
Differences are highlighted instantly โ added lines in green, removed lines in red, and modified lines with character-level highlighting.
Toggle "Ignore whitespace" to focus on meaningful changes and ignore formatting differences.