Browser-only tool

Text diff tool

Paste original and updated text to inspect added, removed, and unchanged lines for reviews, edits, and troubleshooting.

  • Updated: 2026-05-01
  • Both text inputs are processed locally in your browser and are not uploaded.

Warning: line diff helps inspection, but it is not semantic review or correctness verification.

Diff output will appear here.

Privacy And Limitations

Both text inputs are processed locally in your browser and are not uploaded.

  • This version performs line-level diff for readability, not semantic code-aware comparison.
  • Large documents may become hard to inspect visually.
  • Diff output does not assess correctness, security, or legal validity of changes.

FAQ

Is text uploaded?

No. Diffing runs entirely in the browser.

Does it show character-level changes?

This first version focuses on line-level changes for clarity.

Can it compare code?

Yes for plain text comparison, but it is not language-aware.

Why are blank lines important in diff?

Blank lines affect formatting, parsing, and output behavior in many contexts.

Can this replace code review?

No. It helps inspect differences but cannot replace full review and testing.