Text Diff

Compare two texts line by line and highlight what was added or removed.

OriginalChanged

Formula & methodology

Does it compare word by word?

This tool compares line by line, which is clear and predictable for most documents and code.

All processing happens locally in your browser. Your data is never uploaded.

Count words, characters, sentences, lines, and estimated reading time.

Convert text between UPPER, lower, Title, Sentence, camelCase, snake_case and kebab-case.

Test regular expressions live, see every match and capture group, and preview replacements.