Text Diff
Text Diff is a free online text comparison tool that highlights the differences between two pieces of text, with both line-by-line and character-by-character modes. Additions, deletions, and changes are color-coded so differences stand out at a glance.
Comparison runs locally in your browser — your text is never uploaded. Useful for code review, document revisions, contract version comparison, and translation proofreading.
How to Use
- Paste the original text into the left panel
- Paste the modified text into the right panel
- Choose line-level or character-level comparison
- Review the highlighted differences
FAQ
Is the text comparison tool free?
Completely free, with no registration and no usage limits.
Is my pasted text safe?
Yes. Comparison happens locally in your browser; nothing is sent to a server.
What is the difference between line and character mode?
Line mode marks changes per line, best for code and structured text; character mode detects changes down to single characters, best for subtle document edits.
Can I compare code?
Yes. Any plain text works — code, config files, Markdown, or regular documents.