What does Diff Checker actually do?

The diff checker compares two text buffers and highlights insertions and deletions. It is a character- or line-oriented text diff, not a JSON structural diff and not a git history. Both sides stay in the browser.

Is my text uploaded for comparison?

No. Diffing runs entirely in your browser.

Is this diff checker free?

Yes — free online text compare with no account.

Diff Checker

Compare two text blocks side-by-side with character-level diff. Free online — runs locally, no upload.

+0 chars

−0 chars

Original

Modified

Diff

—

Search tools

Diff Checker